Quote:
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Originally Posted by JohnA
Quote:
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Originally Posted by RICE RACING
We dynoed a Toyota supra with auto gearbox and it made following
470rwkw on 11.0:1 AFR 12 deg timing 34psi boost
470rwkw on 12.5:1 AFR 12 deg timing 34psi boost
471rwkw on 12.5:1 AFR 18 deg timing 34psi boost
We have dynoed FSAE engines and made no difference in power or torque from 10.8:1 AFR to 13.9:1 and all ratios between....
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My auto supra registered 5-7% more power just by trimming off fuel from the stock 10.5-11:1 up to 12.5:1
That was at holding 18psi on stock turbos. |
the above was with racing modified hi output 500r autronic CDI box (it will fire anything) running elf racing fuel. autronic ECU set to throttle map mode so simple AFR program change (input new target AFR line) = instant perfect tune in that load site. it made little difference in that application........ though turbo was maxed out and cant count for other variables that may have influenced that particular result
01-01-2007, 02:40 PM
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