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Old 03-11-2018, 11:12 AM
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quinton quinton is offline
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Join Date: Nov 2011
Location: Granbury Tx.
Posts: 1,834

Default S371 to S475 conversion.

dAVe3283 is correct. Convertor and tuning will fix it. Ran a few different s475ís and each one I had to adjust tuning every time, convertor restalled made a world of difference too. You donít want the convertor locked that low of speed with that turbo setup. These guys telling you answers, like Ne-max, more than likely have been through the same scenario and already have done the trial and error.
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EFIlive dsp5 by me, Built trans by me, 68 danville, stock fuel, lifted. died 6/20/2013 Cracked piston. Best time 12.75 on fuel

Alive 11/15/13: lowered, Built motor, s475, plenty of fuel, plenty of spray. Tune 3 fuel only 11.84 @114, Tune 5 little bit of spray 11.45 @ 121. Both times with melted turbine wheel, loose turbo from pedestal with blown out flange gasket. .
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