Cam
Pro
Joined: Jan 2003
Posts: 706
Likes: 47
From: Denver Colorado
The ECM on your early C4 does not have a lot of flexibility for the cam built in. If you go to a much more radical cam than the OEM one for the hot rod idle quality and sound you will also need a custom tune at the minimum. If you want sound volume and aren't going to be upset by drone at cruise a set of Flow Masters may do it for you. 
Melting Slicks
Joined: Jun 2013
Posts: 3,065
Likes: 39
A new tune is not as easy as it sounds. Typically tuning for these cars takes people months and sometimes never ends. Well, for correct tunes that is. Some people never stop making changes to the tune also.
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,062
From: altered state
St. Jude Donor '05
Lope does not always =faster esp on the TPI
These types of car beleive it or not make best power with something smaller. Same with rearent gears
You may still hear it a little but wont be radical
Get rid of the mufflers it iwll get louder
These types of car beleive it or not make best power with something smaller. Same with rearent gears
You may still hear it a little but wont be radical
Get rid of the mufflers it iwll get louder
Melting Slicks
Joined: Sep 2010
Posts: 2,422
Likes: 202
Salute. Daniel. is not kidding. you can tune for years. finding more power & efficiency. every part you bolt on. should Honestly. data log. and re-tuned. Start with the Basics, CAI, LT & exhaust back.
Team Owner
Joined: Jul 2004
Posts: 28,330
Likes: 3,245
From: Hartford WI
That or try your luck with something mail order. http://hitechmotorsport.com/tuning/b...category_id=76
I would use that mail order so I can get the car running to their facility if I didn't want to tow.
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Team Owner
Joined: Jul 2004
Posts: 28,330
Likes: 3,245
From: Hartford WI