ATP downpipe

[psmith22]

I was wondering if anyone would be able to tell me if the atp long downpipe would be compatible with the COBB ap stage 2+ tune.

[SofaKingAwesome]

simply. Yes. You also need upgraded pump internals to run that tune safely.

[psmith22]

I heard that the fuel pump was only necessary with the gen2s. I know it is recommended and I will install within a month but will it be ok if I run this tune without the upgraded internals for a month or two?

[SofaKingAwesome]

mAYBE. mAYBE NOT. DAMN, IM STILL IN CAPS LOCK THURSDAY RAGE MODE.

[psmith22]

Okay thanks for your help

[Biggs]

Originally Posted by psmith22 I heard that the fuel pump was only necessary with the gen2s. I know it is recommended and I will install within a month but will it be ok if I run this tune without the upgraded internals for a month or two?

If you got ur AP, monitor the fuel pressure... if its holding above 1600psi you should be fine while you wait for the install.

I would just drive like a granny till you get the upgrade just in case (lay off high boost/WOT).

[psmith22]

Alright I'll try my best not to push it too hard. Hopefully I get this upgrade soon so I can have some fun with the new map and downpipe

Also I'm still running the old COBB maps where it doesn't require the fuel pump in the map I will be installing but I have notice that it does in the new maps. I'm not sure if that makes a difference or not but I figured I would just let you guys know.

[sallyspeed3]

It does make a difference. In the new stage 2 maps the ECU is expecting a fuel pump that can handle higher pressures than stock, so I wouldn't flash to stage 2 until you have the new internals installed but thats just me.

[psmith22]

Originally Posted by Biggs If you got ur AP, monitor the fuel pressure... if its holding above 1600psi you should be fine while you wait for the install. I would just drive like a granny till you get the upgrade just in case (lay off high boost/WOT).

Its about 430 at idle and when I get on it its about 1750. is that alright?

[SofaKingAwesome]

Originally Posted by psmith22 Its about 430 at idle and when I get on it its about 1750. is that alright?

Yeah keep an eye on it and get the internals before the stock ones fail.

[psmith22]

Alright. What psi does it need to reach for me to start being concerned?

[Speeden6]

also, when you upgrade the internals you will notice your AFR holds so much better at high RPMS. when i upgraded mine and had done a DYNO before and after the numbers were crazy better! but the AP didnt really show that it was bad FP internals, they just made a huge difference.

[vdgmcool]

Originally Posted by psmith22 Alright. What psi does it need to reach for me to start being concerned?

Anything below 1600 psi at WOT and I would start to get concerned.