Exhaust question....................
12-01-2006, 12:51 AM
#11
Tomasz is pretty much dead on, but I do believe there are some small gains to be had
by replacing the cat-back. IIRC the center resonator is not pass-through and the back muffler is baffled. That and all the non-mandrel bends in the system lead me to believe that a cat-back upgrade will yield some small gains.
Dave
Dave
12-01-2006, 02:37 AM
#12
AudiWorld Super User
Thread Starter
Dave..........I know the Stage II programming...........
is dependent on your having upgraded your exhaust. So, if I do the DP/Cat, I can run stage II, yes? So whats the diff between I and II? what's the diff in cost? Thanks!
joe.
joe.
12-01-2006, 03:34 AM
#13
Well you're going GIAC, and they don't make a separate exhaust program.
APR has Stage 1 and 2.
Stage 2 is optimized timing and boost for the exhaust.
When I was running APR S1, I would get about a 16-17psi hold. Now with stage 2, I have about a 19-20psi hold.
The upgrade from S1 to S2 is free with APR.
Dave
Stage 2 is optimized timing and boost for the exhaust.
When I was running APR S1, I would get about a 16-17psi hold. Now with stage 2, I have about a 19-20psi hold.
The upgrade from S1 to S2 is free with APR.
Dave
12-01-2006, 04:14 AM
#15
AudiWorld Super User
Thread Starter
Got it. Thanks.........
I am going to stay w AWE. REALLY good customer service. And a product I've had a great experience w in both my A4's. thanks again!
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