can't make more than 10lbs boost
#1
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can't make more than 10lbs boost
Title's pretty straight forward. i have a few ideas what the problem might be but I'd like some educated input as where to start first. the 1.6 is pretty wore out and compression is suffering. Using a gt2554r, turbosmart bov and manual controller. 550 injectors and a megasquirt. Homemade log manifold with full 3" exhaust no cat. 2.5" piping with intercooler.
Ran it on the dyno a few days ago and made 203hp. What i know is that my bov is not leaking and that when i hit 10psi at around 3800rpms it holds it nicely throughout the rest of the rpm range. BUT, no matter how much boost i try to dial in i can't make anymore.
My initial thought is that i might have too much backpressure on the turbo. Despite having 3" exhaust my downpipe does not make a curved 90 degree bend but rather a straight right angle 90 degree bend like an "L".
Maybe i've given enough info to stir up some theories. Thanks.
Ran it on the dyno a few days ago and made 203hp. What i know is that my bov is not leaking and that when i hit 10psi at around 3800rpms it holds it nicely throughout the rest of the rpm range. BUT, no matter how much boost i try to dial in i can't make anymore.
My initial thought is that i might have too much backpressure on the turbo. Despite having 3" exhaust my downpipe does not make a curved 90 degree bend but rather a straight right angle 90 degree bend like an "L".
Maybe i've given enough info to stir up some theories. Thanks.
#3
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Yes. Everything after the turbo has been checked and monitored thoroughly. And just to throw it out there, when i crank the boost controller way up i get a spike up to 12-13lbs but quickly drops back down to 10. Datalogging confirms my autometer gauge btw.
#7
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It might be kinda laggy, but i have no basis for comparison on this old wore out motor. Aside from it''s dying compression i could think of a handful of reasons why it might be slow to spool. But i don't think any of those reasons are related to my current problem.
#11
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Well we can go ahead and bring this thread to a close. Close hangar wrapped around wastegate, simply put, freakin' rocked my world. Last time i had a hardon like this was when i was watching justin bieber play the flute.
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