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Thread: 598 BBC to a 588 BBC

  1. #1

    Default 598 BBC to a 588 BBC

    Building a 588 BBC and using the Dominator EFI from my 598. How much will this change my base tune in my existing ECM?

  2. #2
    Join Date
    Dec 2009
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    If you're referring to a 10 cubic inch difference, not a noticeable change (if other engine components/modifications are the same).
    If both engines are naturally aspirated, and you're using the same Target Air/Fuel Ratio Table, it should be a good starting point.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

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