27won downpipe install

[tonyo203]

Hey guys so I recently added my down pipe for my 22 Si half a day driving it was smooth but following day I got the CEL light for the o2 sensor but I disabled it on my ktuner but now It’s bogging out at 5k rpm and going into limp mode. I played around with the tuning but still bogging at 5k and it’s running too rich. Any suggestions? Currently it’s back to factory and it’s my weekend car so not too worried but wanting it to run good.
Mods -27won SRI, Inlet pipe and Downpipe.

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[Two Step Performance]

What error code(s) are currently being reported when you scan with KTuner? I'd recommend checking for exhaust leaks or anything else that may have went off track during the installation.

 

[tonyo203]

What error code(s) are currently being reported when you scan with KTuner? I'd recommend checking for exhaust leaks or anything else that may have went off track during the installation.

Po420 and disabled on my laptop with my ktuner

 

[Two Step Performance]

Did you experience "limp mode" after that? Typically limp mode would not be associated with a P0420 error and would present another code upon scanning.

 

[tonyo203]

Yes the car would lose power at 5k rpm and if I tried going over 5k the cel would flash and backfire

 

[Two Step Performance]

A flashing CEL is a misfire indicator. I assume that the CEL did not remain illuminated afterwards?

 

[tonyo203]

No it didn’t stay on once I through it into neutral and slowed down it stopped flashing and drove normal

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