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Thread: Thoughts for good Rev Limiter setup?

  1. #1

    Default Thoughts for good Rev Limiter setup?

    I'm trying to think of what's a good safe way to go with a Rev Limiter setup. This is a boat. I have a jet pump set that at full throttle the engine 572 BBC supercharged which is gear driven runs about 5800 RPM making about 1600 HP at about 18 pounds of boost. My Rev Limiter is currently setup as a 'soft' cut at 6100 RPM with the low side set at 6050. The way I understand, is as the engine passes 6050 the ECU starts pulling both fuel & spark in individual cylinders until it reaches 6100 for 'hard cut'. The only time this happens to me when running at full throttle and going over waves. Which at that point the engine really takes off. My goal is to make this transition from jumping out of the water to than loading the pump with water as stressless as possible on engine. In the Holley guide it recommends to keep the low side and high side close together, however, I'm thinking for my application it may make sense to separate it significantly more? Anyone have any thoughts on this? The truth is I try to avoid this scenario as much as possible, but at the same time I don't want to be scared of it, but I do feel uncomfortable trying to do it over and over to try and tune it. Just looking for some logic and thoughts that any of you may have? Thank you and sorry for the lengthy post.

  2. #2
    Join Date
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    Default

    Originally Posted by Danny Cabral
    EFI Software Help Information/Instructions:
    ‒ On the top Toolbar, click "Help" & "Contents". This opens all Help topics.
    ‒ When navigating the software, click "Help ?", drag it to any parameter and click again.
    ...This automatically opens the definitions for that specific parameter.
    ‒ Tuning information can be read by clicking the F1 key, when you're viewing any screen.
    http://documents.holley.com/techlibrary_199r10544.pdf (Holley EFI Help/Instructions Overview)
    http://documents.holley.com/techlibr...r10546rev1.pdf (Holley EFI Quick Start Guide)
    http://documents.holley.com/techlibr...10555rev17.pdf (Holley EFI Wiring Manual & Diagrams)
    http://forums.holley.com/showthread....ents-Read-This (Initial Checks & Adjustments - Read Steps #1-#6!)
    Open the Holley EFI software "Help" Contents ("Help" drop down menu), and read "Step-By-Step Beginners Tuning".
    Ensure the EFI software is set to run as an "Administrator" (right click for Properties/Advanced). Set it and forget it.
    There's good information about this in the "Help ?" contents. See above "Help ?".
    https://forums.holley.com/showthread...miter-Question (Related Forum Thread)
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS T/W 11R 205 heads, 232°-244° duration/.623" lift/114° LSA camshaft, 12:1 C/R, TFS R-Series FTI ported intake, BBK 80mm T/B, Holley Dominator MPFI & DIS, 36-1 crank trigger, 1x cam sync, 200A 3G alternator, Optima Red battery, 100HP progressive dry direct-port NOS, R134a A/C, Spal dual 12" fans, Frostbite 3-core aluminum radiator, Pypes dual 2.5" exhaust, off-road X-pipe, shorty headers, -6AN fuel system plumbing, Walbro 255 LPH in-tank pump & Pro-M -6AN hanger, S&W subframe connectors, BMR upper & lower torque box reinforcements, LenTech Strip Terminator wide-ratio AOD, 3000 RPM converter, B&M Hammer shifter, Stifflers trans crossmember & driveshaft safety loop, FPP aluminum driveshaft, FPP 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 M/T Street Comp tires.

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