42 miles after K&N intake, Lymp mode

[Todd969]

Hi guys,

I have an 08' with 27K no mods!! Recently put a Gibson catback exhaust and K&N intake on it.

So after 42 miles the amber/yellow check engine light came on and it went into minimal turbo and what feels like 3rd gear only.

Any idea's?

Thanks for any advice.

[Todd969]

So much for help on this forum!

I was able to get a scan tool and found code P0657

Had to replace the transmission control module.


All better