LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Changing revlimiter using Tunercat???

Old Nov 14, 2005 | 07:50 PM
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Default Changing revlimiter using Tunercat???

How do you change the revlimiter using Tunercat??? Thanks
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Old Nov 14, 2005 | 08:53 PM
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Originally Posted by matt94z
How do you change the revlimiter using Tunercat??? Thanks

Look under "Constants", there are two "Fuel Cut-Off RPM", and two "Fuel Restore RPM". Those are the rev limiters. Top speed limiters (If your car did not come with speed rated tires originally, they will be like 118 MPH) should be right there also. Called "Fuel Cut-Off MPH, and "Fuel Restore MPH".

Good luck, Ed
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Old Nov 14, 2005 | 09:22 PM
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Do you mean the DFCO options? I can't get the rpm past 6375I haven't got my cable yet and I am trying to figure a few things out first. Thanks Ed.

Last edited by matt94z; Nov 14, 2005 at 09:40 PM.
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Old Nov 15, 2005 | 08:20 AM
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Originally Posted by matt94z
Do you mean the DFCO options? I can't get the rpm past 6375I haven't got my cable yet and I am trying to figure a few things out first. Thanks Ed.
Nope. Unless he has changed it since, ver 2.07 (which I have) you pull up, or open, your file, then at the top you click on "Tables", when that box drops down click on "Constants". The things I told you to look for should be right there in that list.

Good luck, Ed
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Old Nov 15, 2005 | 12:12 PM
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It might be because I just have the file that came with the program. I have a ECM Constant table, but I can't find that option in it. Thanks.
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Old Nov 15, 2005 | 12:50 PM
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Originally Posted by matt94z
It might be because I just have the file that came with the program. I have a ECM Constant table, but I can't find that option in it. Thanks.
Tunercat comes with the definition file and binary file, as an example, for a 90 model, or so, throttle body truck. They have no rev limiter. You will have to buy an "EE" definition file to open a '94/'95 LT1 calibration. Then read your PCM, to have the file to open. Lots more stuff in an LT1 calibration than a throttle body truck cal.

Ed
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Old Nov 15, 2005 | 01:06 PM
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I bought the $EE file, my AKM cable should be here in the morning, hopefully I won't screw this up. Thanks again Ed.
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