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Old 08-08-2012, 08:32 PM
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sambo sambo is offline
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Join Date: Jan 2007
Location: Melbourne, VIC
Cobra Make, Engine: Harrison, 6.0L Chev
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Quote:
Originally Posted by Zedn View Post
i want to here from people who have taken their car through IM240 and what the setup was for this
Well that's a whole other kettle of fish - as you may know. Your engine management can be thrown out by bad MAF readings (not in free flowing air, too close to throttle body), cats need to be as close to heads as possible to light up early. Make sure they're ceramic cats and not the cheap metal substrate - preferably factory items with low kms if second hand. Your tune may be calibrated to work with factory intake and airbox - I had my tune edited on a dyno prior to the IM240 and the bloke changed something to do with fuel trims.

My L98 got through with an edited VE C'dore tune from Sideshow/Doubledip, MAF located about 300mm in front of the intake elbow (near the balancer), custom airbox with VN filter, VZ cats mounted just behind the gearbox bellhousing and two O2 sensors in the collectors - just in front of cats. Two inch pipes with resonators and no mufflers, for what it's worth.

This is by no means "how to pass the IM240" information, just sharing what I picked up along the way. Good luck.
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