Quote:
Originally Posted by enrita
yes you will still need the o2 sims. they dont do anything about timing pull... they just make the ECU think the o2 level is fine. thats it. Just get catless with o2 sims. The point of downpipes is the free the exhaust right after the turbos. I know many people that have basically sold or emptied their aftermarket dps cats after very little time since they realized what a mistake it was to buy Catted aftermarket dps.
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How about the emissions if I change dps to AR catless ones? Im worried about not passing the registration with catless dps because the emissions.