Who recommends a good chip that will make sone decent gains for the V8. It's hard to believe that no one makes a good chip for this car. Anybody shed some light on this? Lot's of stuff for the 2.7t..but that does me no good. I plan on the following:

Catback Exhaust with Downpipes
K&N Cone filter (Inside existing airbox)
Tranny Chip - APR

I dont want to slam supercharger on this thing. Thanks in advance.

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2001 Audi A6 4.2 Sport - Silver
2004 Lexus IS 300 SD - Black