Need help!!Dc intake, cnt downpipe, and q300. Cel is on.

Q300 won't cause that so my guess is the downpipe, if catless or the intake is fuzzing with the ECU!

...probably the Intake.. those MAF sensors are finicky. Most needs a tune to work properly.

Marko!

DOHCtor said:

Q300 won't cause that so my guess is the downpipe, if catless or the intake is fuzzing with the ECU!

...probably the Intake.. those MAF sensors are finicky. Most needs a tune to work properly.

Marko!

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So I checked the obd2 scanner and the code p0420 came on. I’m thinking it’s my secondary o2 sensor.
So I know nothing can beat a custom pro tune, but will a hondata basemap will delete the code ?

I'm not sure if a basemap would delete the code, worth a try if you're on stock map. The DC SRI def wouldn't pull a code, I'm running it on my car and no code. If the base map wont get rid of the code, you would need to either get it tuned, or put the stock downpipe back on for emissions.

Tune - absolute must with all those bolt ons (esp DP)