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slight blog in 4th gear near red line

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    slight blog in 4th gear near red line

    Hi there,

    At the end of track day yesterday the car has a slight loss of power in 4th gear near the red line and my idle seems a bit erratic. Did not seem to be in 3rd at redline, just 4th. I'm also comparing some top speeds at recorded from Harry's lap time it would appear I'm off a constant 3-4 MPH from my last track day. But. it's only on the very fastest parts of the track, 115 and above It would appear I'm down a little power at the top end, dirty MAF?


    Thanks!
    Last edited by ShaunG; 09-05-2020, 05:42 AM.

    #2
    I had loss of power near the end of 4th and it turned out to be vanos. It was actually in every gear but 4th was the most noticeable on the butt dyno.

    My vanos exhaust piston was damaged. No CEL or anything. There was still some adjustable range so the ecu decided not to throw a code for some reason...


    Sent from my iPhone using Tapatalk

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