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New to fast and so many qusetions

Discussion in 'FAST Support Forum' started by 37jbrock, Dec 3, 2017.

  1. 37jbrock

    37jbrock New Member

    May 18, 2013
    I have been building my 37 chevy coupe for some time now and am in the push to get it done. The motor is a 496 bbc with 2 ez efi throttle bodies the fast crank trigger kit an hei distributor a msd 6a ignition box, msd blaster 2 coil, the GM harness and the XFI 2.0 ecu. Question 1 which o2 sensor should I use and I read it has to be 20 inches from the exhaust outlet is that pipe 20 in or measure 20 inches. Question 2 the tech at the shop where the motor was built said he made his own air fuel ratio settings instead of using the fast stuff should I send the ecu back to fast for a re-flash. Any other comments or lessons learned would be greatly appreciated. Thanks

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