timbo7 Posted November 24, 2017 Share Posted November 24, 2017 I took a LV the other day and my cell D was very high. I've attach a picture of it. I decided to make a boost leak tester assuming that it was a boost leak somewhere. I always did the blow into smaller hose on the bpv and plug the intake trick but I recently got a compressor so I made a better one. Well I heard air leaking from where the BPV meets the intercooler (racerx fmic). I looked at the gasket on the BPV and it seems fine but it was bubbling like crazy with some soapy water. Is this usually how they leak when they do bad? Theres no cracks or anything on the BPV. BTW mods are bnr18g w/ supporting mods. Link to comment Share on other sites More sharing options...
Max Capacity Posted November 24, 2017 Share Posted November 24, 2017 Buy a new seal for that and replace it. That will fix your leak. The dealership should have one. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
covertrussian Posted November 27, 2017 Share Posted November 27, 2017 No leaks are normal or good before or after the turbo. Your D learning (used by WOT & open loop) is really high, in positive way, meaning ECU is having to add fuel because your leaning out. Boost leak (after turbo), will have the opposite effect, it would cause the mixture to be rich, which would lead to negative learning (ecu removing fuel). Either you have a bad tune, or you have some other issues too, possibly a pre-maf vacuum leak, bad maf, intake without a tune. 05 LGT 16G 14psi 290whp/30mpg (SOLD) 12 OBP Stock 130whp/27mpg@87 Oct 00 G20t GT28r 10psi 250whp/36mpg 22 Ascent STOCK Link to comment Share on other sites More sharing options...
timbo7 Posted November 28, 2017 Author Share Posted November 28, 2017 I was able to figure out the issue with the bpv. Instead of retyping it I'll paste my email to my tuner. It may have been leaking since I got returned for my ewg. Everything seems tight now. Only thing is I can't hear anything paste 5psi cause of something around the front of the manifold making a kazoo type sound. This is normal isn't it? Here's my email to my tuner and the third gear log. leak tester ( https://forums.nasioc.com/forums/showthread.php?t=2205161 ) now that I have an air compressor. Before I was just plugging the inlet and blowing into the small hose on the BPV. I found a leak where the TB hose connects to the fmic piping. I also found out that the little brass bushing things on the oem bpv were pulling thru the plastic and not letting the bpv sit flush against the flange so I fixed both of those issues. I pressurized the system to about 10 psi according to the gauge and didnt hear any leaks other than the kazoo noise it makes at like 5 psi from under the front of the manifold. Not sure if theres a way to not have that noise during a test or not. Could you take a look at the logs and let me know your thoughts please? BTW, I put about 20 miles on it since I fixed said issues and reset the ECU.romraiderlog_20171124_193257 3rd gear.csv Link to comment Share on other sites More sharing options...
covertrussian Posted December 1, 2017 Share Posted December 1, 2017 Overall looking good, add one AVCS cam if not both to the log, useful info to have too. You are leaning out above 11.8AFR from 3.7k to 5.2k, I would add fuel there. Looks like your running an FMIC (according to avatar pic), which should let you get away with leaner then TMIC mixtures but anything above 11.8AFR is still pushing it (unless you have other detonation prevention mods like meth) 05 LGT 16G 14psi 290whp/30mpg (SOLD) 12 OBP Stock 130whp/27mpg@87 Oct 00 G20t GT28r 10psi 250whp/36mpg 22 Ascent STOCK Link to comment Share on other sites More sharing options...
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