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Old 02-25-2013, 11:31 PM   #1
Scooby Newbie
Member#: 342651
Join Date: Jan 2013
Chapter/Region: MWSOC
Location: wausau wi
94 L-sti

At the Track v3 sti in 95 coupe turbo lag !_!

Hi fellow enthusiasts, I have a 95 impreza L coupe around 5 months ago and here's Whatsup . V3 1997 sti ej20k motor with fmic,koyo radiator , 3" tbe and cai d2 coilovers . It pulls hard holding 20-21 psi on stock vf23 turbo and I run 93 octane here in wi

After purchasing , tightened all the loose bolts and mounts , fixed notchy shifting, replaced the squeaking, slipping six puck clutch with an exedy stage 1 hd and act light flywheel, new alternator , new starter , ss uel headers and up pipe .

After finally resolving my random stalling issues and constant idle hunting in neutral by getting new iacv and having idle reset and adjusted with tps and other things , I still have some issues .. all work done has been from my neighbor and traceys auto in town so that's good . Idk why I get random cels when flooring in higher gears , and also when coasting /decelerating in those gears . the codes are still idle air codes when logged but my idle is finally smooth and not dropping to low anymore or hunting .

I did some research and figured out how to use aem true boost ebc that's installed in here and when going through settings I see that the whole time I've had this car running strong , my iwg spring pressure is set to 23.5 , and duty cycle 12% in A and 15% in B .

this thing pulls hard but has a lot of lag , it's not fully spooled pulling hard til around 4500rpm which makes it difficult to race my friends Evo 9s that spool up by 3k! Not sure how normal this is to have such extreme lag on a stock turbo with no exhaust leaks or vacuum leaks.. I even took long pulls in 3rd and 4th gear today after adjusting wastegate spring pressure to 6 psi and duty cycle to 25% and other combos but my results were either more lag and/or less boost .. I even turned it to off setting to see what psi my wg is running on and that was around 9 psi ..

I've had problems diagnosed with this cheap aftermarket bov installed by a previous owner that were found out last week and are temporarily fixed til tonite when I get my gfb hybrid adjustable bov installed and routed to recirculate 50% and be adjusted with Allen wrench maybe that could change somethings .

Idk what else to do to find out wtf is going on with this lag but it just can't be right ! I just want a reliable tune from Shane @ dbperformance in rogers mn asap to utilize all my bolt ons n such to maximize power .

Oh btw I have an apexi power fc and commander standalone I picked up used for a steal $400 but atm I'm still running my Jdm no 6 ecu til tune time . I've researched anything and everything for months with any upgrades or issues I've had and I know this is a lot of information , but hopefully ppl know something and can enlighten me ]
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