P0171 Bank 1 system too lean has thrown the EML on my Cupra. I've recently had a custom manifold & pcv delete removed & stock pcv, manifold put on with the rfd, I also had an S3 alloy end intercooler fitted at same time.
I'm presuming my map needs tweaking hence throwing up the code?
The car now has a certain flat spot when coming on boost, however I am booked into Rtech for next Tuesday
Any opinions on this? They were no codes prior to the work being done
I'm presuming my map needs tweaking hence throwing up the code?
The car now has a certain flat spot when coming on boost, however I am booked into Rtech for next Tuesday
Any opinions on this? They were no codes prior to the work being done