Does an 85 ecm have a rev limiter?
Thread Starter
Drifting
Joined: Dec 2001
Posts: 1,313
Likes: 1
From: providence ut
Does an 85 ecm have a rev limiter?
Does the 85 corvette ecm have a rev limiter and if it does what is it set for............I seem to be hitting a wall at 5900 rpm or so........super ram with procharger .......brand new engine .......no tune........just woundering were to start looking.
Melting Slicks
Joined: Sep 2000
Posts: 3,150
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From: Carlsbad, CA CA
Re: Does an 85 ecm have a rev limiter? (lead foot 85 vet)
I was told that they do not. What kind of chip do you have? COuld be set in the chip.
I have a similar problem with my 91 but it happens at around 6600rpm. I replaced the distributor with a DUI unit and I got a little more RPMs out of it but it is still there. I have gotten it to rev to 7000rpm a few times but it rarely gets up there without cutting out first.
What kind of distributor do you have? It could be just the stock HEI dying out.
[Modified by zelement, 8:45 PM 5/16/2004]
I have a similar problem with my 91 but it happens at around 6600rpm. I replaced the distributor with a DUI unit and I got a little more RPMs out of it but it is still there. I have gotten it to rev to 7000rpm a few times but it rarely gets up there without cutting out first.
What kind of distributor do you have? It could be just the stock HEI dying out.
[Modified by zelement, 8:45 PM 5/16/2004]
Thread Starter
Drifting
Joined: Dec 2001
Posts: 1,313
Likes: 1
From: providence ut
Re: Does an 85 ecm have a rev limiter? (MrNuke)
stock chip............stock distrbutor and coil........with a MSD 6A...............its in a very rough state of tune just wanted to rule the ecm out.........thanks for the help guys. :yesnod:
Don't think I'll hit the fuel cutoff soon :D
Don't think I'll hit the fuel cutoff soon :D
Team Owner
Joined: Mar 2000
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From: Boston, MA
Re: Does an 85 ecm have a rev limiter? (MrNuke)
They don't have a Rev limiter, but the stock eprom has a Fuel Cutoff programmed at 12,500rpms..
Melting Slicks
Joined: Sep 2000
Posts: 3,150
Likes: 1
From: Carlsbad, CA CA
Re: Does an 85 ecm have a rev limiter? (scorp508)
They don't have a Rev limiter, but the stock eprom has a Fuel Cutoff programmed at 12,500rpms..
You don't consider a fuel cutoff a rev limiter? :confused: The short answer is "yes it has one" the long answer is "it isn't set at a level to be overly effective in the stock setup."
You don't consider a fuel cutoff a rev limiter? :confused: The short answer is "yes it has one" the long answer is "it isn't set at a level to be overly effective in the stock setup."
Leadfoot,
I think your stock module and coil cannot keep up
[Modified by zelement, 10:48 PM 5/16/2004]
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From: Freedom is never more than one generation away from extinction.
St. Jude '03 thru '24
Re: Does an 85 ecm have a rev limiter? (MrNuke)
They don't have a Rev limiter, but the stock eprom has a Fuel Cutoff programmed at 12,500rpms..
Team Owner
Joined: Mar 2000
Posts: 83,383
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From: Boston, MA
Re: Does an 85 ecm have a rev limiter? (JrRifleCoach)
Thats good. So when the bottom end is blotto, the fuel will cutoff. Thats some engineering feat!
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Re: Does an 85 ecm have a rev limiter? (MrNuke)
They don't have a Rev limiter, but the stock eprom has a Fuel Cutoff programmed at 12,500rpms..
