Heck..I put my aftermarket loud pipes on as soon as I got her home..!!!

 

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Anybody install slip-ons without doing an air cleaneror Sert/Mapping change??

I would think on the 07's with the O2 Sensors that the system would notice any lean condition and make adjustments.....otherwise, what is the purpose of the O2 sensors???

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cant the O2 sensors calibrate for this?


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HD's O2 are very limited - EPA is the reason for the LEAN CONDITION (Heat) and having the Stage 1 download from the Dealer wouldn't help you one bit as the Dealer is still required to make any and all adjustments with-in EPA Strandards and the would still leave you LEAN

 

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I guess I am still questioning if installing slip-ons going to make it run any leaner than factory exhaust?...because maybe the 02 could adjust to it--to a limit i am sure.

Can I run the slip ons and do the air cleaner and sert/power commander later?

Factory setting dont bother me right now....as long as it is not detrimental to the engine.

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I ran my Rush 2" baffles with stock everything else. I didnt notice any gain in fuel mileage. I don't think it ran leaner. Now I seem to be getting better mpg than stock w/ sig setup. ????? 17k miles though. DAMIFIKNOW! Engine seems cooler tho. Just ain't ben on it at 90 degrees w/ updgrades.