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ok guys....well ive had my vette about 5 weeks now ...06 a6 coupe....and well...its happened...ive started ordering parts....as of now i have a vararam tbs...vararam intake....borla catback...and 160 therm all due in thursday....installing it all friday ...and an appointment to be tuned by chuck at c.o.w. this saturday...so my question to anyone who has done simliar....what kinda difference can i expect because as you all have probably already guessed this waiting for the weekend thing is killing me
Vararam will not show much gain on the dyno since they dyno the stock set-up with the hood open. The spacer is worth maybe 2 hp max. The Corsa catback is only worth a few hp. So you may get 340 to 350 with a tune. If you want a good gain, get LT headers and forget the Corsas. I picked up 26 rwhp & 39 rwtq with LG Pro LT headers on my 06 A6.
You would have been better off just getting your intake ported instead of adding the spacer + 160stat (which does nothing).. however I do wonder If the spacer on top of the ported intake manifold would have made an even bigger difference.