N75 / missfire help please

[Deleted member 10425]

I have done a search but cant find what i am looking for...

I have a what seems to be a missfire on full bost, I have revo stage 1 and the car runs fine, I am running 21psi and was fine for a few months after i brought it. I have changed all the coilpacks and the spark plugs, so i have been told it may be the N75 ??

I have a C valve on mine at the mo, I called Seat and my engine code is AQX which they told me is rare ? but i am ment to have the F valve on so they say ? what is the difference ?

It only misfires if for example i am going down the motorway in 5th and put my foot down, has any one got anyideas ?

I am getting a code come up saying it is to lean, but i have no boost leak, changed fuel filter, and it is not the MAF, any ideas will help me out big time ?


thanks Dan.

 

[acidstrato]

n75 causing a missfire... i dont see it

the c and f valves are essentially the same

you sure you got the right spec plugs fitted?

might be worth looking at the oxygen sensors

 

[Deleted member 10425]

what plugs would you recommend for that sort of boost ect?

 

[acidstrato]

http://www.seatcupra.net/forums/showthread.php?p=1356097#post1356097

might be worth a read