Color of exhaust in pipes
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The business of the cat is to do a re-burn on leftover hydrocarbons . That is where it gets the heat from. You should not have much of any color, other than brown or gray past the cat.
You just did a download, I guess it was a Stage 1, so you shouldn't be rich.
If you do the cat you probably will want to do a tuner, so you won't be running lean with your other mods. You could be on the lean side right now, but maybe the cat is giving enough back pressure so the flow isn't high enough.
Did they do a dyno tune when they put in the download ?
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I am running rush slip-ons, header is de-catted, bike runs strong and cool. Inside of slip-ons are charcoal black/gray. I have the pipes & the EFI "tuned" so the AFR in the pipes is just right for lots of decel pop (which I like), otherwise the inside of the slip-ons would probably be black.
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#9
I am running rush slip-ons, header is de-catted, bike runs strong and cool. Inside of slip-ons are charcoal black/gray. I have the pipes & the EFI "tuned" so the AFR in the pipes is just right for lots of decel pop (which I like), otherwise the inside of the slip-ons would probably be black.