Apologies for the late reply, I have to admit after your recent post I've been doing some research / testing. I can confirm my diff ratio is 2.91, it seems I was misinformed by the owner I bought the rear axle from.
Also I can confirm my rev limit is standard on my car despite having the error code up. I know the ecu was previously chipped so I think that it may have been played with in the past.
Current figures are I can pull from 30-80 in 4.5 seconds in second gear, shifting at 7400 into 3rd.
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