Stupid questions about BT build I am considering.

[dsmluck]

Looking to pick up a used 3071 or ideally a 3076 in the next couple months or when one becomes available. Have a few questions.

The budget I have is a little over a $1200. Not much I know.

Will a normal diameter TIP and intake work well enough with either of those turbos? Ideally I would like to upgrade to a 3.5 inch but it will have to wait.

Also going to have to be running the stock exhaust manifold and CNT catless DP. I know the stock manifold is shit and I will lose power by running it but are there any other concerns beside the loss of HP due to running stock manifold and intake?

Also I am running the CX Racing core. I know that it is too small for big power. Does anyone know of a specific larger CX core that can fit with minor modification to my pipes or bumper?
Also since I spray methanol I assume that moving from a d05 to a d07 would be preferable?

I plan on tuning it conservatively myself until I can finish the build later on (intake/EX manifold) and then getting a DJ tune.

I know its not an optimal build but will it work?

[I Love Brownies]

ok well the stock tip wont work with a 71 or 76 due to the inlet size of the turbo being 4inches

as far as the stock mani it doesnt flow terribly bad and it will do well with the budget you have. As far as the cx core we just did a drop in 3076 on my buddies car with the stock mani and just a cpe inlet and his car is a monster, just make sure are get the 71 or 76 with the mazda hotside so it will bolt up with no problems, meth is great idea also and yes get the bigger nozzle


trust me you will be way happier with this setup over the crappy k04

[I Love Brownies]

Let me know if you need help with the swap i wouldnt mind going to colorado for a weekend, we could get the whole swap done in about 5 hours

[Ckmazdaspeed3]

Do it, the ko4 is your biggest bottle neck. If you change one thing, change the intake just because your only other option (that I know of) is super ghetto.... This is to take two couplers together. It will work, but it is ghetto. Also, you will need to find a way to extend your hot pipe... You could probably use 2 couplers and a metal pipe, or just have someone weld it for under $50.

Lastly, switch to a three port. They used to bs a pain to boost tune w the old atr, but work flawlessly w the revision.

[danesti]

I have a CPE inlet for BT (4 inch mouth).
Let me know if you want to buy it.

[Ckmazdaspeed3]

Buy it! Except I bet 4" is a bitch to fit... Probably need to relocate ecu

[rfinkle2]

Originally Posted by Ckmazdaspeed3 Buy it! Except I bet 4" is a bitch to fit... Probably need to relocate ecu

Do you have a small battery CK, or did you re-mount the ecu on the front of the battery box?

[Ckmazdaspeed3]

Put it in the battery trey. I bet you could do that mod yourself, but u may need smaller battery for 4". Mine is 3.5 and that bitch is snug!

[danesti]

The one I'm selling is only 4 inch for the turbo inlet. Otherwise it fits similar to stock.

[bertrand_CX_7]

Originally Posted by ms307nm Let me know if you need help with the swap i wouldn't mind going to Colorado for a weekend, we could get the whole swap done in about 5 hours

It'll be nice if in Austin area we could have pple like you around. I'm just wondering how helpful some of you are here.

May be I just moved to a wrong state dude.

[MS3-a(sore)ASS-rex]

It should actually work.

Everything Eric said is spot on. As long as it's a bolt-on turbo you should be able to get away with the CP-E inlet, I believe it was actually made to fit without moving the battery. I'd suggest running a bigger MAF housing as well.

[Fatguy729]

As for your intercooler question, I seriously doubt the core is big enough. I have the CXRacing kit, and I've been thinking about getting a bigger core for the K04. This one is 1" thicker and 1" taller, it's what I've been thinking about purchasing. It will fit perfectly, but you would need to take an inch off the 2 "L" brackets that mount to the top of the core (since its an inch taller)

In case the link doesn't work right, its the IC0013 core... same length as the core that comes with the kit, again, just 1 inch thicker and taller (similar dimensions to the COBB core) cxracing.com: Front Mount Intercooler 28"x8"x3.5", 3.5" Core: 22x8x3.5, 2.5" Inlet & Outlet, Talon Eclipse Jetta

[frodaddyweez]

Subbed. Thinking of a 71 myself. Yeah it sucks that not many people in Texas that are BT are on this forum. I'm looking at doing a similar setup as you but without meth at the moment. I'll get the mani down the road later.

[I Love Brownies]

Originally Posted by bertrand_CX_7 It'll be nice if in Austin area we could have pple like you around. I'm just wondering how helpful some of you are here. May be I just moved to a wrong state dude.

hey man my brother lives in housten so i could kill 2 birds with one stone if you ever need help.

Originally Posted by MS3-a(sore)ASS-rex It should actually work. Everything Eric said is spot on. As long as it's a bolt-on turbo you should be able to get away with the CP-E inlet, I believe it was actually made to fit without moving the battery. I'd suggest running a bigger MAF housing as well.

Tom, you are spot on with that cpe inlet that dane sti has for sale it would work with standard size panisonic battery without relocating the battery or ecu. bigger maf would be nice but stock housing is ok with our buddies car.

Originally Posted by Fatguy729 As for your intercooler question, I seriously doubt the core is big enough.

im sorry but i completely disagree with you. my buddy is running the same exact set-up as the op described and his car is running 22psi till redline and it pulls like a freight train. we are at 5500 feet up here and his meth is on order next week and we will pry take him up to 25 psi and that cx core will do just fine. iirc that core is rated to 400hp so i dont see any reason to change it unless we really find out it becomes a bottle neck

joel jmhinkle is running a core that is rated for 450 and when we went to the dyno he made close to 500 whp. really his ic did become a bottle neck but it actually went over what it was rated for. when we up his boost to 25 psi and take his timing up on the dyno we will really find out if that cx core is only good what its rated for.

[dsmluck]

Originally Posted by ms307nm Let me know if you need help with the swap i wouldnt mind going to colorado for a weekend, we could get the whole swap done in about 5 hours

Serious? That would be awesome. Its always just me working on my car by myself. I figured I would have to give myself the better part of a weekend to do it. Only other turbo swap experience was on my old GSX. I found a way to turn a 3 hour job into a full day. I doubt I will have all of the parts necessary before the end of August. I will be at the mercy of someone parting out a 71 or 76 during that time. If it works out and you have the time I would more than welcome the help and some company during the swap.

Originally Posted by Ckmazdaspeed3 Do it, the ko4 is your biggest bottle neck. If you change one thing, change the intake just because your only other option (that I know of) is super ghetto.... This is to take two couplers together. It will work, but it is ghetto. Also, you will need to find a way to extend your hot pipe... You could probably use 2 couplers and a metal pipe, or just have someone weld it for under $50. Lastly, switch to a three port. They used to bs a pain to boost tune w the old atr, but work flawlessly w the revision.

Good info. Thanks! Gonna stay MBC I think for the time being because its easy to adjust.

Originally Posted by danesti The one I'm selling is only 4 inch for the turbo inlet. Otherwise it fits similar to stock.

How much you asking for that bad boy? I assume I could use a step down coupler to get it to mate up to my intake?

[dsmluck]

Originally Posted by MS3-a(sore)ASS-rex It should actually work. Everything Eric said is spot on. As long as it's a bolt-on turbo you should be able to get away with the CP-E inlet, I believe it was actually made to fit without moving the battery. I'd suggest running a bigger MAF housing as well.

Problem then is I am hitting the money wall. Granted it may not be the best idea to go BT when I am far from rolling in money but I honestly cannot stand knowing im a turbo away from an extra 75hp when I have already spent soo much time and money over the last two+ years for maybe 60hp.

Is there a cheap(er) option for a big maf?

[dsmluck]

Originally Posted by Fatguy729 As for your intercooler question, I seriously doubt the core is big enough. I have the CXRacing kit, and I've been thinking about getting a bigger core for the K04. This one is 1" thicker and 1" taller, it's what I've been thinking about purchasing. It will fit perfectly, but you would need to take an inch off the 2 "L" brackets that mount to the top of the core (since its an inch taller) In case the link doesn't work right, its the IC0013 core... same length as the core that comes with the kit, again, just 1 inch thicker and taller (similar dimensions to the COBB core) cxracing.com: Front Mount Intercooler 28"x8"x3.5", 3.5" Core: 22x8x3.5, 2.5" Inlet & Outlet, Talon Eclipse Jetta

That would be perfect and not too difficult to get it in there. It will have to wait a few months until after I get a turbo but I think I will go that route. If I have to run lower PSI until I upgrade I will manage. Seriously i have massaged the stock k04 for all its worth and I am likely sitting on 260whp at my altitude. I think a BT would be an epic improvement. Thanks for the heads up.

[dsmluck]

Originally Posted by ms307nm hey man my brother lives in housten so i could kill 2 birds with one stone if you ever need help. Tom, you are spot on with that cpe inlet that dane sti has for sale it would work with standard size panisonic battery without relocating the battery or ecu. bigger maf would be nice but stock housing is ok with our buddies car. im sorry but i completely disagree with you. my buddy is running the same exact set-up as the op described and his car is running 22psi till redline and it pulls like a freight train. we are at 5500 feet up here and his meth is on order next week and we will pry take him up to 25 psi and that cx core will do just fine. iirc that core is rated to 400hp so i dont see any reason to change it unless we really find out it becomes a bottle neck joel jmhinkle is running a core that is rated for 450 and when we went to the dyno he made close to 500 whp. really his ic did become a bottle neck but it actually went over what it was rated for. when we up his boost to 25 psi and take his timing up on the dyno we will really find out if that cx core is only good what its rated for.

Good to hear about the intercooler. Gives me motivation for the BT build. Also glad to hear that you can run the bigger inlet with the stock MAF. Gotta keep this build cheap.

[rghispanic88]

nice, post as many pics as possible.

subbed

[I Love Brownies]

yeah man shit is pretty fun and pretty simple. ive already done the swap 4 times so i know it really well. once the mani is off its a breeze and i can get the mani off in about an hour or so.

i will be doing my gtx3076 soon cause i decided to save up a little more and go with that turbo. only thing is im going with ewg cause it sounds sexy

keep me posted on when and if you need help so i can plan a trip up there

just to give you an idea my buddy spent 1800 for all brand new parts and some crazy 2 day shipping. i think you will have no problem hitting your budget with used parts

[dsmluck]

Originally Posted by rghispanic88 nice, post as many pics as possible. subbed

I will. Waiting until next week to make sure my school grants are in order and then I will post up a WTB.

In the meantime though if anyone knows of someone wanting to part out a 71 or 76 in good condition let me know.

Originally Posted by ms307nm yeah man shit is pretty fun and pretty simple. ive already done the swap 4 times so i know it really well. once the mani is off its a breeze and i can get the mani off in about an hour or so. i will be doing my gtx3076 soon cause i decided to save up a little more and go with that turbo. only thing is im going with ewg cause it sounds sexy keep me posted on when and if you need help so i can plan a trip up there just to give you an idea my buddy spent 1800 for all brand new parts and some crazy 2 day shipping. i think you will have no problem hitting your budget with used parts

EWG is definitely sexy. I will let you know once I have all the parts secured. Might be a bit though. Had a 3071 a while ago awaiting install before and the government decided to take a bunch of my money so had to sell it. Hopefully this time is much less eventful.

If it works out and you can come down you can stay at my place. You been down to Denver before? You have no idea how bad I dread tackling this swap myself. I think most of the guys here with BT just pay someone to do it. Nothing wrong with that but I don't like to pay someone to do something I can learn by working on it myself or with help.

[rghispanic88]

cool, i got time. i wanna do the same. put a big turbo on shit.

i hope everything goes well.

YOU CAN DO IT!!!!!!

[jack_hammer]

i want to see a BT swap for $1200

[dsmluck]

Originally Posted by broncojd78 i want to see a BT swap for $1200

Don't see why not. Snagged a 3071 last time for $950. Already have the major supporting mods. Just gotta be patient about fining a turbo.

[azokaei]

So your buddy running the 3071r was running IWG? and did he have it ported? if he didn't how was the boost creep?

[MS3-a(sore)ASS-rex]

Originally Posted by dsmluck Problem then is I am hitting the money wall. Granted it may not be the best idea to go BT when I am far from rolling in money but I honestly cannot stand knowing im a turbo away from an extra 75hp when I have already spent soo much time and money over the last two+ years for maybe 60hp. Is there a cheap(er) option for a big maf?

You can make yourself a custom intake instead. Using silicone couplers and a maf housing from somewhere like siliconeintakes.com. We have a denso style MAF so keep that in mind when putting everything together. I'd also highly recommend an air straightner if at all possible.

[Ckmazdaspeed3]

Oh yeah, mbc works too, you just lose the safety of ebc.

[triplejumper18]

Originally Posted by Ckmazdaspeed3 Oh yeah, mbc works too, you just lose the safety of ebc.

If you have the AP you can still set throttle and fuel cut for boost limits because the car still reads boost off the MAP.

At least I think so. I will double check with Brandon @ Cobb today because I'm running MBC.

[I Love Brownies]

yeah i have been to denver quite a few times, i actually have some friends (chicks) that live dt up there so we can go celebrate with them after the install. its only a 5 hour drive from santa fe but i might fly so i dont have to rack up the miles on my car.

@azokaei i dont know if your talking to me but my buddy is running the 3076r from atp and he got the higher boost iwg spring of 14psi instead of 7 psi. the install went so smooth to only find out he could only make 3psi of boost. found out his iwg was staying straight open

so on my day off rob and i troubleshot his problem and atp had installed the wga backwards and it was binding on his coolant to egr line. after removing the turbo and redoing the wga i reset the pre-load on the iwg to right about 17 psi and now his wgdc is about 10% at 21psi. atp has to custom make each high boost wga so the install was a fail on there part

[rfinkle2]

Originally Posted by triplejumper18 If you have the AP you can still set throttle and fuel cut for boost limits because the car still reads boost off the MAP.

On that note: I wouldn't feel too comfortable running the stock 2.5 bar map sensor @ boost any above 21.25 psi.

Lex is coming out soon with a device that will help.

Assuming the map sensor is accurate +/- .5psi

[knarfies]

ya that buddy hes talking about is me haha.

ya was pretty shocked to see that atp made such a noob mistake but the turbo is a monster now. with the cxracing kit you shouldnt have to cut the hot pipe just make sure have the appropriate 45 (edited )degree coupler.

Before i was able to get time with dustin to sit down and tune for a couple of hours we had the stock solenoid disconnected and i was holding 20 psi actually with just spring pressure. Installed the 3 port just to learn that i didnt need it so now running the stock solenoid fine and dandy.

only problem ive had was the return coolant line from the turbo but thats just oddness right there. nothing that cant be fixed with a new hose etc.

with the stock mani i start spooling around 3700 hundo and hit full boost at 4200 so i cannot complain. gotta love 22 psi at redline : )

[triplejumper18]

You guys have seen my ATP Rage Comic right?

Originally Posted by rfinkle2 On that note: I wouldn't feel too comfortable running the stock 2.5 bar map sensor @ boost any above 21.25 psi. Lex is coming out soon with a device that will help. Assuming the map sensor is accurate +/- .5psi

I have a Bosch 3 BAR MAP sensor in my garage as well.

[lito37]

my battery relocation, getting ready for the same thing.

[Jedyboyrokr]

Burn813 is trying to get rid of his BT

[burn813]

Originally Posted by Jedyboyrokr Burn813 is trying to get rid of his BT

Jed the turbo is already gone

[Ckmazdaspeed3]

Originally Posted by triplejumper18 If you have the AP you can still set throttle and fuel cut for boost limits because the car still reads boost off the MAP. At least I think so. I will double check with Brandon @ Cobb today because I'm running MBC.

Yeah, that makes sense. I'm not sure why, but I thought that the lack of boost cut was a major drawback.... But now that I think about it, you have to bs right.

[I Love Brownies]

actually you will need a 45* not a 90* coupler coming off the compressor side of the turbo to make the cx kit work with that turbo without any modification

[azokaei]

Originally Posted by knarfies ya that buddy hes talking about is me haha. ya was pretty shocked to see that atp made such a noob mistake but the turbo is a monster now. with the cxracing kit you shouldnt have to cut the hot pipe just make sure have the appropriate 45 (edited )degree coupler. Before i was able to get time with dustin to sit down and tune for a couple of hours we had the stock solenoid disconnected and i was holding 20 psi actually with just spring pressure. Installed the 3 port just to learn that i didnt need it so now running the stock solenoid fine and dandy. only problem ive had was the return coolant line from the turbo but thats just oddness right there. nothing that cant be fixed with a new hose etc. with the stock mani i start spooling around 3700 hundo and hit full boost at 4200 so i cannot complain. gotta love 22 psi at redline : )

are you running a catless or catted downpipe?

Originally Posted by ms307nm yeah i have been to denver quite a few times, i actually have some friends (chicks) that live dt up there so we can go celebrate with them after the install. its only a 5 hour drive from santa fe but i might fly so i dont have to rack up the miles on my car. @azokaei i dont know if your talking to me but my buddy is running the 3076r from atp and he got the higher boost iwg spring of 14psi instead of 7 psi. the install went so smooth to only find out he could only make 3psi of boost. found out his iwg was staying straight open so on my day off rob and i troubleshot his problem and atp had installed the wga backwards and it was binding on his coolant to egr line. after removing the turbo and redoing the wga i reset the pre-load on the iwg to right about 17 psi and now his wgdc is about 10% at 21psi. atp has to custom make each high boost wga so the install was a fail on there part

How did you adjust the preload on the iwg?

[rfinkle2]

The arm on the iwg to actuator rotates.

Edit: see post 41.

[I Love Brownies]

on his there is a nut that you would loosen or tighten to adjust the preload setting and he is running catless


after we preloaded we went to go test it to see what we preload it at and would just adjust it to our liking. we hooked it up to a mechanical boost gauge and an air compressor to test how many psi the iwg would see and when it would open. i took video and will get it up loaded tonight so you can see what im talking about