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Hello,
I own a C4 AEL quattro, and... an OEM exhaust system from S6.
Does it worth anything (if possible) to fit the AAN exhaust system under AEL chassis?
Downpipe... forget, does not match.
Cats... any difference between diesel to petrol? Sorry, never tuned a diesel. I don't know.
All the rest... any worth in performance or just sound?
No don't fit an aan exhaust,it's probably twice the weight of the ael exhaust so will be effectively slower
Cats are visually nearly identical between aan and ael Q,just have different angled in/out
paths
If i were you I would fit a 2wd downpipe and run a pipe to the backbox,saves a decent bit of weight and sounds decent.plus you can scrap your cats for about £50 each presuming the insides are still intact (unlike the last one I did)
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