Added MBRP to my 2022 stinger now it misfires at high rpm ,lap 3 1.5 tune with hks plugs, cai, midpipes, bm intercooler.

[mikegt2]

Ran totally fine until the mbrp catback was installed what could cause this problem ?

 

[AdrianG]

Bizarre. My first guesses would be an exhaust leak or maybe an issue with the valves (assuming you are using the valved exhaust). After that I would think maybe some wiring got messed with somewhere or an issue with the tune, somehow.

 

[mikegt2]

I think the ecu adjusted went out drove again now running good !

 

[AdrianG]

I think the ecu adjusted went out drove again now running good !

Good to hear. A long-term issue with the ECU would have been surprising to me.

 

[mikegt2]

I was pretty happy seems turbo's spool up faster also.

 

[AdrianG]

I was pretty happy seems turbo's spool up faster also.

Tight. How's the sound with the midpipes? I assume you are running stock primaries?

 

[mikegt2]

Sounds good ! has way more pops and crackles then i thought it would and yes have stock primaries don't plan on changing those , meth is only thing left i plan on doing.

 

[AdrianG]

Sounds good ! has way more pops and crackles then i thought it would and yes have stock primaries don't plan on changing those , meth is only thing left i plan on doing.

Are those pops and crackles tunable in the Lap3 tune? If so, was it an option you selected? I'm actually not a fan of it for the most part. I like the burbles or whatever at higher RPMs somewhat.

 

[Schroedes]

Would a exhaust leak down the line from the cats cause a misfire??

 

[mikegt2]

Would a exhaust leak down the line from the cats cause a misfire??

Yes, actually what it ended of being, had to tighten the bolts from midpipes to mbrp exhaust.

 

[Schroedes]

Yes, actually what it ended of being, had to tighten the bolts from midpipes to mbrp exhaust.

Interesting, I didn't think it would. I've been trying to chase down some bogging out, misfiring, backfiring, that has been happening right after I mash on the pedal. Maybe I should check my MBRP.. I know my rear clamps leak water

 

[Rodtheviking]

Interesting, I didn't think it would. I've been trying to chase down some bogging out, misfiring, backfiring, that has been happening right after I mash on the pedal. Maybe I should check my MBRP.. I know my rear clamps leak water

The supplied clamps with the MBRP are garbage, get some better ones.

 

[mikegt2]

Mine only backfired at high rpm's if you drove under 5k rpm you would never have backfire.