I did not prepare this thread to compare to vw_singh's car per se. If I did, the cars would not be MK2 vehicles but MK1 cars with the various engine variants. The object here is to compare the sweeps for 4 typical engines fitted to your average MK2 or even Mk1 as introduced in the how to ABF thread. The baseline is the MK2 vehicle that has a factory engine, working in good mechanical order. This was compared to a MK3 16v, also with a factory ECU and calibration and was shown to have similar results both what was displayed on this thread and other data that was not shared albeit at different times. Satisfied that factory cal is working as intended I would expect other variants, in the MK2 cars to deviate +/- .It would be unfair to compare Gurd's developed car with these MK2 vehicles that have had calibration work done for the SEM but no dyno development time and do not share the same weight and gearing.