Whining sound + no boost (0psi)

[CombatVet89]

Recently, I was upgrading my stock TIP with CP-E TIP and while I was doing that, I broke the ECBS nipple and I had to order a new one from Mazda and waited two days. So, I got the stock ECBS today and installed it with my new CP-E TIP. Now, everything is normal, idling, driving without boosting is normal. My currently problem is when I'm boosting, I wont pass 0psi and I get this whining sound and I know it's not the intake or the bpv making that sound, it doesn't boost at all. It usually start whining at around 3-4k even without boosting. I checked my hoses and clamps, I didn't "find" anything that could be the problem. I did my forum search and Googling. I read multiple solutions, I read that it could be bad bpv, recal MAF sensor, etc. Everything is stock except my intake and TIP. What do you guys think? Thank you.

[kby]

Wastegate stuck open? Accessport? How do you know it isn't passing 0psi, the dash boost gauge or ass'o'meter?

[CombatVet89]

Originally Posted by kby Wastegate stuck open? Accessport? How do you know it isn't passing 0psi, the dash boost gauge or ass'o'meter?

I forgot to mention, nope, no AP yet. Also, how would I know is the WG is stuck open? Well, based on the built-in gauge and plus we all know the feeling when you boost, we get that roller coaster effect. I don't get that at all, like literally I get no boost. Thank you.

[ArmanRus]

No paper towels or rags stuck inside intake?

[CombatVet89]

Originally Posted by ArmanRus No paper towels or rags stuck inside intake?

I know it's funny but no, I triple checked it.

[kby]

Double check all connections on every part of the EBCS.(also confirm it's installed correctly) Stock BPV right?

[CombatVet89]

Originally Posted by kby Double check all connections on every part of the EBCS.(also confirm it's installed correctly) Stock BPV right?

yeah, I checked every single hose that I touched while installing it, but I will try again tomorrow morning.

[kby]

Originally Posted by CombatVet89 yeah, I checked every single hose that I touched while installing it, but I will try again tomorrow morning.

Yeah it has to be either the compresser(shaft play/wheel damage), major boost leak, open wastegate(but would probably see some boost), or open bpv(wouldn't idle too well).


The fact you hit 0 psi has me wondering. Eliminate those and then move on from there.

[MTLspeed6]

Maybe instead of double checking your connections, take everything apart, from intake to throttle body, inspect all, and put it all back properly

[CombatVet89]

I was told to wait for the ECU to "relearn" but I just got home after driving it for about 20 mins. I'm pretty sure it doesn't take that long to relearn.

Originally Posted by MTLspeed6 Maybe instead of double checking your connections, take everything apart, from intake to throttle body, inspect all, and put it all back properly

I might do that in a few days or so, but right now I'm just trying to figure out the problem without taking it apart.

[Big Dog]

It's either a massive leak, a faulty ebcs (even new shit can be faulty), the wastegate stuck.

You really need an AP or dash hawk.

[CombatVet89]

Originally Posted by Big Dog It's either a massive leak, a faulty ebcs (even new shit can be faulty), the wastegate stuck. You really need an AP or dash hawk.

I'd like to get an AP right now but I don't have the money yet. Soon though

[Big Dog]

Originally Posted by CombatVet89 I'd like to get an AP right now but I don't have the money yet. Soon though

Go VIP and get a DashHawk from the classifieds. It's a cheaper alternative for monitoring the essentials.

[jm211]

Agreed and its hard to tell 0psi from 1-3. At this point id remove it all, inspect turbo (visual) checks the fins on the turbine.

It was good b4 u touched it, now its not. A bpv wont give you this issue. An airflow leak this big would cause a cel. Missing a boost tube comes to mind.

Check your wastegate arm while the tip is off

[rodrigo]

Common sense tells u that the last thing u did is what caused the problem .... Go borrow the boost solenoid from someone , make sure u hook it up correctly ..... Borrow someone's ap and run a log or two and I'm sure the problem will be aparent . Doubt physical damage occurred with anything . There would be no reason to

[Zmcg1995]

Try doing a boost leak test. A leak that big would cause other problems but still something you can try


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[CombatVet89]

Thanks for the replies guys. I'm currently in KY right now and don't have access to my car, but when I get a chance I will take the intake and the TIP out and put everything back together again and see what happens. I thought about buying and replacing my BPV but I'm glad jm211 mentioned that the BPV wouldn't cause this problem.

Originally Posted by jm211 Agreed and its hard to tell 0psi from 1-3. At this point id remove it all, inspect turbo (visual) checks the fins on the turbine. It was good b4 u touched it, now its not. A bpv wont give you this issue. An airflow leak this big would cause a cel. Missing a boost tube comes to mind. Check your wastegate arm while the tip is off

You were right, it's hard to tell but I've been driving my car for three years now and I know the feeling when you are boosting.

[Nitr0EngiE]

i bet its a loose boost tube clamp