I owned a three chipped B5 S4 cars...one with GIAC chip and exhaust, one with APR chip and exhaust(including 100 octane program) and one with just the basic APR chip...the 100 octane one as you might guess went the best. I was about 320 bhp at the crank...and got the weight down to 3550 even with the Avant.
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Car is now gone .... :-(
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