Rev limiter....
Burning Brakes
Joined: Feb 2008
Posts: 988
Likes: 7
From: Sarasota Fl
Le Mans Master
Joined: Dec 2004
Posts: 5,488
Likes: 1,352
It cuts fuel and it will for lack of a better way to describe it will bap bap bap bap bap quickly. 
I was leaving work one Friday when a couple of guys were egging me on to jump on the Corvette. I pull it down into first and smash the gas and proceed to do a sideways burnout it got a little too sideways so in my efforts to steer it I forgot all about it being in first so mine was bouncing off the rev limiter. That's another way to describe it the car will bounce off the limiter.
If you have a new model GM daily driver leave it in park and floor it it will bap bap bap off the rev limiter at a relatively low rpm.
I was leaving work one Friday when a couple of guys were egging me on to jump on the Corvette. I pull it down into first and smash the gas and proceed to do a sideways burnout it got a little too sideways so in my efforts to steer it I forgot all about it being in first so mine was bouncing off the rev limiter. That's another way to describe it the car will bounce off the limiter. If you have a new model GM daily driver leave it in park and floor it it will bap bap bap off the rev limiter at a relatively low rpm.
Thread Starter
Safety Car
Joined: Dec 2007
Posts: 3,616
Likes: 5
From: Sandhills of North Carolina
It cuts fuel and it will for lack of a better way to describe it will bap bap bap bap bap quickly. I was leaving work one Friday when a couple of guys were egging me on to jump on the Corvette. I pull it down into first and smash the gas and proceed to do a sideways burnout it got a little too sideways so in my efforts to steer it I forgot all about it being in first so mine was bouncing off the rev limiter. That's another way to describe it the car will bounce off the limiter.
If you have a new model GM daily driver leave it in park and floor it it will bap bap bap off the rev limiter at a relatively low rpm.
I was leaving work one Friday when a couple of guys were egging me on to jump on the Corvette. I pull it down into first and smash the gas and proceed to do a sideways burnout it got a little too sideways so in my efforts to steer it I forgot all about it being in first so mine was bouncing off the rev limiter. That's another way to describe it the car will bounce off the limiter. If you have a new model GM daily driver leave it in park and floor it it will bap bap bap off the rev limiter at a relatively low rpm.
Safety Car
Joined: Jun 2006
Posts: 3,629
Likes: 28
From: FL
It cuts fuel and it will for lack of a better way to describe it will bap bap bap bap bap quickly. I was leaving work one Friday when a couple of guys were egging me on to jump on the Corvette. I pull it down into first and smash the gas and proceed to do a sideways burnout it got a little too sideways so in my efforts to steer it I forgot all about it being in first so mine was bouncing off the rev limiter. That's another way to describe it the car will bounce off the limiter.
If you have a new model GM daily driver leave it in park and floor it it will bap bap bap off the rev limiter at a relatively low rpm.
I was leaving work one Friday when a couple of guys were egging me on to jump on the Corvette. I pull it down into first and smash the gas and proceed to do a sideways burnout it got a little too sideways so in my efforts to steer it I forgot all about it being in first so mine was bouncing off the rev limiter. That's another way to describe it the car will bounce off the limiter. If you have a new model GM daily driver leave it in park and floor it it will bap bap bap off the rev limiter at a relatively low rpm.
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
If you reprogramme it to a useful figure it cuts fuel off dead.
It does not "bounce" off the limiter like an electronic limiter; the engine stops dead until it goes under the restart fuel rpm setting programmed in.
I suggest you are hitting the limits of your ignition system and the spark is breaking down
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Race Director
Joined: Mar 2006
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From: Sherwood, Arkansas
Le Mans Master
Joined: Dec 2004
Posts: 5,488
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The factory rev-limiters aren't the most accurate in the world on these cars just like the factory tach. They are of the type that "cuts fuel" for their rev-limiting function where as all the good aftermarket ignitions (MSD, Mallory, Ect...) will instead drop spark to varying cylinders for their rev-limiting function.The factory one is fine as a last ditch safety feature which is really all it was designed for. A LT1 will "bounce" off the limiter which is a real issue when spraying these cars as when it cuts fuel it goes lean. A L98 does not really have a rev limiter.
Last edited by JD'S WHITE 93; Jan 5, 2009 at 10:51 AM.
Melting Slicks
Joined: Dec 2006
Posts: 3,374
Likes: 86
From: Corbin KY
The factory rev-limiters aren't the most accurate in the world on these cars just like the factory tach. They are of the type that "cuts fuel" for their rev-limiting function where as all the good aftermarket ignitions (MSD, Mallory, Ect...) will instead drop spark to varying cylinders for their rev-limiting function.The factory one is fine as a last ditch safety feature which is really all it was designed for. A LT1 will "bounce" off the limiter which is a real issue when spraying these cars as when it cuts fuel it goes lean. A L98 does not really have a rev limiter.
Cruising
Joined: May 2006
Posts: 10
Likes: 0
Interesting thread for sure. There may be others about this already but it's nice to see the topic pop up from time to time too.
Le Mans Master
Joined: Aug 2000
Posts: 8,838
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From: Australia
Melting Slicks
Joined: Jan 2008
Posts: 2,065
Likes: 1
From: Jasper Texas
Burning Brakes
Joined: Aug 2006
Posts: 878
Likes: 2
From: BC
On a TPI at least ,the factory fuel cut off is set at approx 10,000 rpm.
If you reprogramme it to a useful figure it cuts fuel off dead.
It does not "bounce" off the limiter like an electronic limiter; the engine stops dead until it goes under the restart fuel rpm setting programmed in.
I suggest you are hitting the limits of your ignition system and the spark is breaking down
If you reprogramme it to a useful figure it cuts fuel off dead.
It does not "bounce" off the limiter like an electronic limiter; the engine stops dead until it goes under the restart fuel rpm setting programmed in.
I suggest you are hitting the limits of your ignition system and the spark is breaking down
there is a Fuel Cut RPM and a Fuel Resume - so say cut at 6000 resume 5900 and you get the 100rpm stutter/bouce your talking about.
I clip the limiter in 1st and 2nd in this clip set at 5500 with the 730 $8D ECM - http://uk.youtube.com/watch?v=Pns8C_fY4wE