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Discussion Starter · #1 ·
I know the air filter upgrade requires a flash.

What about UDP, headers, intake, etc or a combination of?
 

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Doc
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37,101 Posts
everything but long tubes should be fine without a tune.


besides forced induction and nitrous and big stuff like heads and cams.

bolt ons are fine.
 

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39,159 Posts
UDP
certain intakes
catted midpipe (o/r with MIL eliminators)
axle back
driveshaft
gears (don't need a tune if you can deal with the speedo being off)
suspension
 

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Not all CAI's require a retune. The K&N 63 series CAI doesn't. You'd see more benefit from it if you did retune for it, but not necessary. After install I did notice better throttle response and maybe a little quicker acceleration, and my mileage went up a couple mpg's.
 

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MM's resident Juice head
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7,913 Posts
everything but long tubes should be fine without a tune.


besides forced induction and nitrous and big stuff like heads and cams.

bolt ons are fine.

Dont forget delete plates...they DO require retunning.
 
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