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Back fire


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I have the 22. T7

And went to a black widow headers and ankrapovik silencer.  Now especially high altitudes backfiring, crackling off gas. Do i need remapping to richen it up? Also lost some midrange power but gained low end. Really want the midrange power back


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If you removed the cat (presumably as you said Black Widow headers) you need a flash.

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Replaced the whole system on my 21 with a full black widow system. Didn’t like the loss of low/mid range so put the stock headers back on with the black widow can. It crackles a little bit, mainly below 4500rpm  but nothing too bad. Have you got any leaks anywhere, like at the start of the headers? A remap would definitely help. 

Edited by Robo
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Backfiring is a sign of richness not leanness, it's excess fuel burning in the headers.  If all else is good in the motor it's not a sign to worry about if it happens when you are decelerating.  If it happens at other times though?    Like @wintersdark said, you need to flash if you want to be sure you're not doing long term damage.

Edited by winddown
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