Catless downpipes and custom tune throwing codes.

[mre1986]

I recently tried getting my car tune and they wouldnt do it till the intake valves were free of carbon which is fine, so they did that and tuned it got great numbers 384whp 465wtq. not an issue but the tried to put launch control on my car which actualy made my car feel like it was miss firing. explained to them that it wasnt working and made them make a normal map. that problem got fixed of course after I changed the plugs already. but now I have two codes that keep coming back which were not there before the tune.

P29F4
P29F5 cataltic conversion 2??

Are these important to get fixed? What are they? Is this from the tune or the seafoam they did after they cleaned the intake valves?

I got AFE intake, AR 3" catless Down Pipes, and the custom tune.

Its a 2008 BMW 335xi with 53000 miles.

[Henry@COBB]

I recently tried getting my car tune and they wouldnt do it till the intake valves were free of carbon which is fine, so they did that and tuned it got great numbers 384whp 465wtq. not an issue but the tried to put launch control on my car which actualy made my car feel like it was miss firing. explained to them that it wasnt working and made them make a normal map. that problem got fixed of course after I changed the plugs already. but now I have two codes that keep coming back which were not there before the tune.

P29F4
P29F5 cataltic conversion 2??

Are these important to get fixed? What are they? Is this from the tune or the seafoam they did after they cleaned the intake valves?

I got AFE intake, AR 3" catless Down Pipes, and the custom tune.

Its a 2008 BMW 335xi with 53000 miles.

It sounds like they may not have turned off the codes for the catless downpipes on your new tunes. You may want to contact the shop and ask them to turn off the downpipe cat codes.

-- Henry

[mre1986]

It sounds like they may not have turned off the codes for the catless downpipes on your new tunes. You may want to contact the shop and ask them to turn off the downpipe cat codes.

-- Henry

If I send u the tune can u guys do that. I think there sick of me BC they didn't believe me with the launch control issue and probably still don't.