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> Got My 3" exhaust!!!, Wow
post May 20, 2006 - 10:29 AM
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gtfc115

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So I finally got my exhaust done. It's such a HUGE difference...I had no idea. my old exhaust had so many leaks, was crush bent, and was only 2 inches...if that. now it sounds so much better, not too loud and has a great low growl to it. Im boosting ~13psi now. kinda scary at times.

now my mods list includes: (92 JDM Mr2)
MBC (@13psi)
Walbro 255lph
ACT Stage 2 clutch w/ fidanza flywheel
Full 3" exhaust!!!

Also, Im pretty sure I hit fuel cut a few times, but i have the vac hose plugged going from the turbo to the t-vsv so I shouldnt have fuel cut should I? maybe im misunderstanding something about how it works. i have an hks FCD but its not installed because since my harness had been re-wired twice, i cant tell which wire i need to splice...is there a link to the pinouts for the 92 jdm mr2 ecu somewhere?

comments? suggestions for my next mod? i'll have a chance to get it dyno tuned at a place in Columbus in the next few weeks. any idea how much power i should have at the wheels with these mods?
 
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post May 22, 2006 - 8:41 AM
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94wrc



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I take it that none of you guys that have done the 3s-GTE swap suffer from boost creep with the 3" exhausts? in the UK if we use the standard ct20 on a 3" system we normally get boost creep, it might be down to us having 99 ron fuel. It happened to me the other day and went up to 21.4 PSI then I hit fuel cut and spat a big flame out of the back smile.gif I think the 2 solutions to this problem is either to fit an external wastegate or a restrictor plate in the exhaust to increase backpressure slightly so the wastegate can work better.

Nathan


--------------------
1994 JDM ST205 WRC with 17" OZ Chrono's wearing 215/45/17 Eagle F1's. HKS Induction Kit, Blitz DV, Decat and full SS System, Blitz SBC-iD and Power Meter running at 1.12Bar = 17mpg and a lot of fun
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