ECU cable up grade as effective as getting it tuned on a dyno?
Im looking to get my 01 S chipped. And ive been reading some post and many people have been just getting the software and cable shipped to them.
I thought if your doing an ECU chip it would be effective if it was tuned on a dyno? I dont understand how a generic ecu software n cable can be as effective as getting it done while on a dyno and tuned to what kind of performance parts you have on... can someone let me know what im missing here.....
Thanks
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