Boost drop
#1
R.I.P. GuitarJunkie28
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Boost drop
i know i know i've tried searching...but my searching skills aren't as good as some of you out there :P
anyways...here is my problem.... boost doesn't stay consistant...it has a 11-9-10 pattern...then...as the rpms climb...boost starts to drop off...it keeps dropping until it hits about 5-6 psi. and it kinda stays consistant there. Mods: dp, cb, manual boost controller ( i know...but it was all i could afford at the moment).
Any ideas folks? anything would be greatly appreciated.
anyways...here is my problem.... boost doesn't stay consistant...it has a 11-9-10 pattern...then...as the rpms climb...boost starts to drop off...it keeps dropping until it hits about 5-6 psi. and it kinda stays consistant there. Mods: dp, cb, manual boost controller ( i know...but it was all i could afford at the moment).
Any ideas folks? anything would be greatly appreciated.
#4
R.I.P. GuitarJunkie28
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hmm...thats gonna lead to more and more mods i like that haha so i guess i should replace the main cat, and see what happens? will the MBC still be ok with an added mp? or high flow cat?
#5
Racecar - Formula 2000
In addition to a clogged cat, an air intake restriction (collapsing hose, clogger air filter, etc.) can also cause boost drop-off at high RPM's.
#7
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iTrader: (7)
Yes, boost control is boost control, and there really isn't a way to outgrow the MBC.
The midpipe however can cause boost creep, which, if it happens, requires that you port the wastegate opening. So a mp can cause boost issues, but it's not related to the controller.
Personally, I'm not a fan of pollution, stinky cars, and extreme noise, so I will always recommend the high flow cat.
Dave
The midpipe however can cause boost creep, which, if it happens, requires that you port the wastegate opening. So a mp can cause boost issues, but it's not related to the controller.
Personally, I'm not a fan of pollution, stinky cars, and extreme noise, so I will always recommend the high flow cat.
Dave
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#8
R.I.P. GuitarJunkie28
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i'm not a big fan of it either...but the costs of a hi-flow esepecially in san francisco california! *sighs*
porting the wastegate? damn....taking the turbo's out while the engine is in the car isn't fun *sighs...again* haha anyways thanks for the info! i'll try these things out and see what happens
porting the wastegate? damn....taking the turbo's out while the engine is in the car isn't fun *sighs...again* haha anyways thanks for the info! i'll try these things out and see what happens
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