Well, if you keep your foot in it, I would imagine it would go down. Otherwise, I would expect it to be running more efficient so there would be little change to a slight improvement.
intake alone won't have much hp gain. add a free flow exhaust also.... if you can't let it out fast, letting it in fast is a waste. although you'll see better throttle responce and nice acceleration growl.... disconnect your neg battery cable for about 20min to help your ecu to more quickly re-learn what it needs to do.
that being said, to get full pontential from any and all of these type mods. we need to retune for the mods... urd has a maf calibrator (about $220.000) that has delivered up to 15hp on a stock xrunner. i'm not fluent on what's involved in the tuning, not sure if you need to dyno it but many have. i'm wanting one, but waiting for others results on tuning.
2006 4x4 Access, V6, 6spd, TRD Off-Road, tow pkg. Donahoe Co's, TC UCA's, Dakar leafs, 5125's in the back and u-bolt flip kit. TRD exhaust, CAI. URD MAF calibrator. 17x9's, 285/70/17 BFG MT KM2. Locker-mod, fog mod and console vault.
did you add the psc-003? if so did you do the tune it yourself? i'm very interested in the psc, or the urd calibrator, but don't want to spend $$$ on a dyno. what was your a/f ratio before and after? when you're done tuning how do you know you haven't gone too lean?
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