No, but you may need a new MAF sensor. Jim, I see your point...even though there may be more hot air sucked in by the EVO intake, there is more air being sucked in overall thus the power increase. As with any aftermarket company though, the power increase of 8-10 hp on the intake alone is under optimal conditions at best. On top of that the chances of CEL's and other problems increases with such a system..you concur?
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