On my tpi (90 cal ) the fuel shut off seems to work great.. got it set at 7200rpm..just gotta becareful like bruce said about fuel cut off and being lean... I found that if your cutout was too close to the cut in then you detonate.... My cut in is set at 6700rpm... from testing that is what I found best for my combo.... Mike Rolica Plant A, Magnesium Products Division Strathroy (519)-245-4040 Ext. 265 -----Original Message----- From: Bruce Plecan [SMTP:nacelp@bright.net] Sent: Tuesday, June 06, 2000 2:31 PM To: gmecm@diy-efi.org Subject: Re: Rev Limiter on '87 Corvette OEM Tacks can be pitifully inaccurate. Ain't no way to be gentle on the car for rpm cut out. They all one way or another turn the ignition or fuel off, and on. Turn the fuel off slowly and it lean, and that ain't good. Trying to quickly retatrd the spark is beyond my ability. I used a MSD multi step, and tried to quickly retard the timing, but the testing was getting on my nerves for what I was doing to the engine. Trying to test at 3,200 was about pointless, ever time I thought I had it, and tired it at 6,400, it wouldn't work anywhere near as effectively. Gets to the general statement of shifting at 2-300 rpm over max HP is fastest. Again, test <sigh> Grumpy > I was kinda thinking the same thing about my car. (the revving part not the > new motor part). I was going to modify the speed limiter section to include > a rev limiter by throwing in a extra branch statement. > Well, Pontiac says a rev limiter kicks in at 6200 rpm...I haven't found it > yet, and when I tried, I found my tach needle on the wrong side of the > little peg. > >After my rebuild, my motor might want to spin faster than I think is > >healthy. I thought I had a factory rev limiter, but I've since learned > >that it doesn't exist. How can I burn my own rev limiter into the eprom > >that will be gentle on the car? Thanks ---------------------------------------------------------------------------- To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes) in the body of a message (not the subject) to majordomo@lists.diy-efi.org
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