 Can't Boost past 11psi, >:/ |
 Jul 5, 2012 - 1:24 PM
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Enthusiast  Joined Sep 22, '10 From pomona, ca Currently Offline Reputation: 1 (100%)  |
hey whats up guys, once again i have ran into another issue. this past weekend i was doing some tuning on my car and i wanted to UP the boost a little bit more, but to my surprise i cant go past 11psi......
i did another boost leak test and my intercooler pipes( inlet to outlet) hold 15psi without trouble and the pressure stays pretty steady....so no mo major leaks there... i got a cheap MBC when the MBC is closed i boost 7spi which is the wastegate spring load MBC half way open = 11psi fully open = 11psi if i remove the boost controller and leave the hose that connects to it by itself, still get 11psi............. so i im assuming i must have a leak somewhere past the throttle body...im not sure how to test the intake manifold and all other vac lines to see if i got a leak there under pressure, because in idling i sprayed starting fluid around injectors, manifold, ects. and idle didnt change. or is it possible that my EGR could be leaking??? any help is appreciated |
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Aug 2, 2012 - 11:41 AM
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Enthusiast Joined Sep 22, '10 From pomona, ca Currently Offline Reputation: 1 (100%) |
it turns out it was my wastegate arm. it was some what at an angle and even though the flap seemed closed it remained a little open.
i had tried holding the wastegate closed with a wire before and i had the same problem, only boosting 11 psi, but the wastegate arm was still connected...... i completely removed my wastegate and tied the flap closed again with a wire; when for a spin and shot all the way to 15psi. thats how i knew the arm was at an angle keeping the wastegate a little open. soon after that i noticed my turbine wheel was chipped...i had no filter so most likely something flew in and broke it so i got myself a new turbo, a i correctly positioned my wastegate...and this time i went with a 50 trim instead of the 57 and boosting around 14 psi and i get spool at 2500RPM and get full boost at about 3k RPM =] happy camper! lol |
Posts in this topic
batcavee00 Can't Boost past 11psi Jul 5, 2012 - 1:24 PM
batcavee00 C'mon guys, im sure somebody knows how to truo... Jul 6, 2012 - 1:37 PM Syaoran How do you know you're boosting 11 PSI?
Boos... Jul 6, 2012 - 5:22 PM Smaay you are flirting with disaster at that high a boos... Jul 6, 2012 - 6:52 PM batcavee00 I got no signs of detonation, or knock wat so eve... Jul 6, 2012 - 8:21 PM
Syaoran QUOTE (batcavee00 @ Jul 6, 2012 - 9... Jul 6, 2012 - 8:29 PM batcavee00 The booost gauge is still pretty new. If it was ba... Jul 6, 2012 - 11:51 PM delusionz what turbo? wastegate door being blown open? Jul 7, 2012 - 1:49 AM Smaay it could be the exhaust. it might be too restricti... Jul 7, 2012 - 2:54 AM malecrod Sounds like wastegate problem. It might be stuck o... Jul 7, 2012 - 8:46 AM batcavee00 i think i found my problem, i was checking the car... Jul 9, 2012 - 2:00 PM batcavee00 So, I fixed the leak on the throttle and still hav... Jul 16, 2012 - 9:19 AM easternpiro1 did you ever find the issue? im begining to think ... Aug 1, 2012 - 10:00 PM easternpiro1 thats good to hear!! i checked my wastegat... Aug 2, 2012 - 7:11 PM |
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