streeteg Posted July 1, 2008 Share Posted July 1, 2008 Heres the low-down.Stock rb25det FMIC greddy type s bov avc-r boost controller set to 10lbs stock ECU stock MAF stock ignition. Was driving the other day and the car was cruising just fine... hitting boost like normal, idle like normal, 10lbs all day throughout the RPM band. Felt very solid. Then as I am cruising back to my house and under load, just as the car builds around 6-7 lbs @ 3300 it just stops making power, and hesitates very noticably. At the time I just chalked it up to heat, but I took it out again today and same thing.... It will cruise out of boost just fine, even build a little under load, but as soon as it feels full boost is going to hit, power just dies off. My instinct tells me MAF, and I havent checked it yet...but if so... I have access to a z32maf...will that work with a stock ECU? Sparks look good (little dark, but as expected running untuned). Any suggestions? maybe a ground? vacuum line? First places I should check? Let me know! Thanks in advance.... -Eric Quote Link to comment Share on other sites More sharing options...
ZDrifter Posted July 1, 2008 Share Posted July 1, 2008 I have been dealing with this on and off for the past couple weeks. Ill get it running good then the next day it will rev to 4K and stop. The biggest thing I found that helped was adjusting fuel pressure as needed. I need to replace my filters and recheck my pressure and I think I will be good to go again. 42psi is stock fuel pressure and when I set it at that it runs all the way to 7,000rpm with stock boost. What kind of fuel pressure are you at with 10psi?? Quote Link to comment Share on other sites More sharing options...
streeteg Posted July 2, 2008 Author Share Posted July 2, 2008 edit: im an idiot--- boost leak. Quote Link to comment Share on other sites More sharing options...
ZDrifter Posted July 2, 2008 Share Posted July 2, 2008 Glad you found the problem quick. Quote Link to comment Share on other sites More sharing options...
streeteg Posted July 2, 2008 Author Share Posted July 2, 2008 im a boost noobie so there will prob be a few things happening quite similar to this. Little problems i think are huge. Thanks for the heads up though i do appreciate it. Quote Link to comment Share on other sites More sharing options...
triple B Posted July 3, 2008 Share Posted July 3, 2008 glad you found it as soon as i read your post i was like, sounds like a boost leak Quote Link to comment Share on other sites More sharing options...
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