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Hi what other things need to be changed in the base tune if u are also fitting a new set of extractors and full exhaust system. Cheers Sal
It would be common to disable the CAT over temp protection and the Post O2 diagnostic tests. You should find that a full exhaust and extractors improve the high rpm VE too so be prepared to account for this in your calibration. You should also find that the engine will accept more timing at high rpm/WOT without suffering from knock. Beyond this though the dyno will let you know what adjustments are required.
