detroit99sts

Hi Im contemplating replacing stock exhaust with a new cat-back system. Would I need to get the car re-tuned? It is currently a stock 2011 GS coupe A6. thanks

-mike

old motorhead

Nope.

airforcex

Absolutely not. DO NOT spend money on this!

mysloride

if all your doing is a cat back system, then no tune is needed.

If and when you do headers then a tune will be needed.

Also do be fooled be any additional HP gains claimed. There "might"
be a couple of HP points gained, but nothing that will be felt.

There will be some "make you smile" gains achieved if you choose the right system for your listening style. They differ greatly, so do your homework and research and buy a system that won't drive you crazy with drone.

I personally love the NPP because it lets me chose between quiet and a rumble when I want it

detroit99sts

I wish mine came with the NPP. Now im having to compare youtube audio clips of different corvette ls3 exhaust setups. so far the flowmaster delta 44 seem to have the aggressive sound I am looking for ( not too loud, either )

detroit99sts

Thanks for the headsup.