[Jennifer B]

Our KRX 1000 added a mbrp muffle and new muffler gasket and and did reflash,and we are still have backfire when deceleration. Does anyone know what the problem could be????

 

[Cclt750]

Who did your tune ? I drilled out my cat and a tune I’m also having backfire issues. Mine also appears to be running lean looking at the inside of the tail pipe.

 

[Jennifer B]

Who did your tune ? I drilled out my cat and a tune I’m also having backfire issues. Mine also appears to be running lean looking at the inside of the tail pipe.

Alba racing did the tune for the slip on muffler.

 

[Fkn_newguy]

Alba racing did the tune for the slip on muffler.

Have you found any fix to this? I also added the MBRP muffler. Sounds like a 12ga shotgun went off sometimes

 

[Jennifer B]

We didn't find a fix...we ended up putting the stock muffler back on,although we have been checking with friends and shops to see if anyone has found a fix,thus far nothing.

 

[Ajb9]

I asked the Dyno jet guys about this back fire condition that many complain about after re tuning there ecu.. has to do with the ecu in a closed loop at lower rpm and didn't indicate much could be done about it.. I went with the HMF and dynojet and have no back fire issues..