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Re: performance/tuning
Fuel cut is usually pretty abrupt. Some say it is semi-violent. I have only hit fuel cut in our Subaru, not my vr4, so I dunno, but if it were ignition related, ie spark blowout, it would be more of an on and off hesitation.
Are you datalogging by any chance?
My guess is spark blowout. Iridiums aren't as good as coppers when it comes to boost. Basically the coppers produce a better spark at the same gap. While iridiums aren't technically supposed to be gapped, many do gap them...CAREFULLY. Jsut because you had them in for a year and they ran fine, probably just means this recent additional boost is probably enough to blowout the spark. Try gapping them down a bit or switching over to coppers.
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96 3000gt vr4
-K&N FIPK
-Proboost mbc
-Cusco front + rear strut bars
-Greddy type-s
-ATR downpipe
-no cats
-15Gs, 3sx aluminum pulley, FMIC, SAFC, walboro pump, EVO 560ccs, and Meth Injection Kit all waiting to go in shortly.
Your 1996 Mitsubishi 3000GT VR-4 is the 92nd out of the 315 that were made that year. Only 21 of which are exactly identical.
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