I think i have narrowed it down to either Milltek or AWE exhaust. I've looked on youtube and got a little idea about the sounds but is there anyone out there with real hand experience with both of the systems? Any imput would be great.
What about the power difference. I herd that you have to be careful with aftermarket exhuast because they flow more. I was told that a turbo needs to have good backpreasure. otherwise the bottom end will hurt but the top will improve a little.
Well having experience with helping one of my friends installing his AWE twin 1 exhaust and downpipes. I would say that they have a higher power output to those that I have seen with a Milltek exhaust. There is a video on youtube where two guys were racing similar S4's one was tuned all AWE and the other was tuned all APR and Milltek. AWE won each pull by about 1.5 lengths, So i would say go with AWE, much better results, and great engineering.
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Working on getting an Audi S4. Plans: Stage 1: APR Bipipe,Giac performance chip,AWE S-flo ,BBS CH 18",Goodyear Eagle F1, S4 intercooler w/hose kit Stage 2: ASP TruDual 225 Stainless Steel Catback,boost gauge,diverters,AWE Drive stabilizer, RS4 clut
I have the AWE Twin 1 exhaust. (I also was down to Milltek or AWE) I was going to get the milltek Super duel because it was quiet, but I decided to go with a loud exhaust so I bought the AWE Twin 1. The Twin 1 is loud but it gives off a good tone. AWE also has the Twin 2 which is quieter. Are you getting downpipes also or eventually? Try to have the same brand for both.
I am not sure what application it is but for my b7 A4 I went with the AWE. Sounds create, deep, no drone, not overly loud. I really liked the sound of the milltek but I had several warnings that the milltek had some fitment issues with the B7s. Enough that it requires adjustment after install to prevent leaks. Not sure how true all that is but it was enough for me to start concidering AWE and StaSis and no MIlltek. The power upgrade has been good and there have been considerable upgrade in the throttle response and turbo spooling.
ORIGINAL: motoxxx54321 What about the power difference. I herd that you have to be careful with aftermarket exhuast because they flow more. I was told that a turbo needs to have good backpreasure. otherwise the bottom end will hurt but the top will improve a little.
Nah. That's a common misconception. Non-turbo motors generally benefit from some backpressure, because you lose some low RPM torque if you don't have *any* backpressure.
Turbo motors (this applies to supercharged cars, too) do NOT have this same problem. I repeat, they do NOT have this problem. The less restrictive the exhaust for turbo/supercharged cars, the better. It would be ideal if there was no exhaust at all, in fact, but that's just ridiculously loud and illegal. The less restrictive your exhaust is, the faster the turbo will spool, and the faster the power will kick in.
Both AWE and Milltek are good choices, by the way. Milltek will most likely be a little quieter. Milltek tends to be a little more subdued, and alot of people like that.
AWE is a great exhaust I am going to get it as soon as I cough up the money. Basicly theres no huge difference between the AWE and the Milltek exhaust except your paying so much more for Milltek only because its a european band. AWE is located in the US so you dont have to pay extra for it coming from europe.
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2007 Blacked out A3 S-Line 2.0 T w/ open sky - REVO stage 1- and much more to come
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Milltek or Awe pipes - 
