08-03-2012, 11:22 AM
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#11 (permalink)
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Enthusiast Member
Join Date: Mar 2012
Location: bakersfield, CA
Posts: 338
Drives: 12 Nissan 370z Nismo
Rep Power: 14
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Quote:
Originally Posted by dmhenderson
^^^
Correct me if I'm wrong here, but isn't this why you want to get the car uprev tuned if you significantly mess with the exhaust flow. HFCs will make your low-end seem sluggish and unresponsive. The tune balanaces the car out again, right?
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My friend who is a Mechanic for Nissan said anything you change that has to do with the engine needs a new tune! He even said trying to let it reprogram itself isnt the best way, it wont always figure itself out correctly.
I got a Cold air intake and he retuned it. My MPG went up by 3. But then I decided to cut the resonators off. My MPG went down. No joke, I noticed it right away. Went and had him retune the car, and it went right back. I know people say cutting the resonators off should not do anything or need a tune, but I did.
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