Quote:
Originally Posted by whitecliffs
yes that was my thinking with it being fine for the 2.5, i'm trying to solve a flat spot ive got at 5400 rpm.
When i disconnected the MAF the flat spot had gone, the MAF's ok as after the flat spot it pulls hard again to the redline
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Still sounds like a fouled MAF. I had a similar problem with a flat spot and no error codes yet. I cleaned the MAF and it improved for a while but came back over time with codes. Replacing the MAF was the cure.
I suspect the 987 airbox on a 2.5L may improve performance slightly above 6krpm but may sacrifice some torque in the 4-6k range. A tradeoff worth taking??? Depends on your goals I guess.