Rev Limiter
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- Gholdwayne
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Rev Limiter
Hey guys, i wanted some information on the rev limiter..
Now i understand that the revs are limited to 6000 when cold and can redline when warm since i can reach 7500 when it is.
One time on operating temperature, i stalled( yeah i did) on a roundabout when i wasnt concentrating, reignited the car and had to gun it since there were cars behind waiting, and as i revved it, it limited to 6000, at operating temperature....
So i got the impression and made a theory that the rev limiter is active with a timer after reignition. No idea if there really is a timer, i suppose this is for safety as well, but can you guys fill me in on how the rev limiter works ? Its a 97 gpx mivec by the way.
Cheers...
Now i understand that the revs are limited to 6000 when cold and can redline when warm since i can reach 7500 when it is.
One time on operating temperature, i stalled( yeah i did) on a roundabout when i wasnt concentrating, reignited the car and had to gun it since there were cars behind waiting, and as i revved it, it limited to 6000, at operating temperature....
So i got the impression and made a theory that the rev limiter is active with a timer after reignition. No idea if there really is a timer, i suppose this is for safety as well, but can you guys fill me in on how the rev limiter works ? Its a 97 gpx mivec by the way.
Cheers...
97 GPX Icelle Blue
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- evoman
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- Gholdwayne
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oh no no, my limit isnt 7500, its just that thats all i want to reach as i don't want to redline it or blow my engine - so i dont really know if my engine's limit is 8250 or what since i dont want to try it. but i want to know some info about this cold start/reignition rev limitations.
I want to at least be able to go 7500 after a reignition(from a stall or if i had to turn the engine off for 5 mins for an errand or something)...
I want to at least be able to go 7500 after a reignition(from a stall or if i had to turn the engine off for 5 mins for an errand or something)...
97 GPX Icelle Blue
I cant stop driving her!
...and when im not, im looking at her!
... ...and when im not, im freakin thinking about her!
FTO[For The Orgasm]
like For The Win!, but more hardcore...
I cant stop driving her!
...and when im not, im looking at her!
... ...and when im not, im freakin thinking about her!
FTO[For The Orgasm]
like For The Win!, but more hardcore...
- vipfto
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limit is 8250 on gpxGholdwayne wrote:oh no no, my limit isnt 7500, its just that thats all i want to reach as i don't want to redline it or blow my engine - so i dont really know if my engine's limit is 8250 or what since i dont want to try it. but i want to know some info about this cold start/reignition rev limitations.
I want to at least be able to go 7500 after a reignition(from a stall or if i had to turn the engine off for 5 mins for an errand or something)...
FTO GR-TURBO
172KW ATW @ 11PSI
172KW ATW @ 11PSI
- Gholdwayne
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sweet... now i know i can gun it to 8000 safely... now ill just need to know how this rev limiter works. there seems to be no documentation that explains this.
97 GPX Icelle Blue
I cant stop driving her!
...and when im not, im looking at her!
... ...and when im not, im freakin thinking about her!
FTO[For The Orgasm]
like For The Win!, but more hardcore...
I cant stop driving her!
...and when im not, im looking at her!
... ...and when im not, im freakin thinking about her!
FTO[For The Orgasm]
like For The Win!, but more hardcore...
- Dan25
- Mechanic
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Exact same thing happened to me after I stalled at a toll booth once. I floored it and then it cut out 6000.
Out of common sense, the obvious explanation is that it's going into protection mode. One plausible reason for this would be that the temporary shut-down of the engine has starved the engine of the necessary fuel to go past 6000. The fuel pump simply needs a bit longer than 5 seconds to catch up lol. In addition, once the car has started, the ECU needs time to run diagnostics and I'd assume that this takes a little longer than 5 seconds also, so once again, it's protecting the engine in case there are any issues.
Whatever the reason, the solution is simple: Don't rev the sh*t out of your car once you start it
Out of common sense, the obvious explanation is that it's going into protection mode. One plausible reason for this would be that the temporary shut-down of the engine has starved the engine of the necessary fuel to go past 6000. The fuel pump simply needs a bit longer than 5 seconds to catch up lol. In addition, once the car has started, the ECU needs time to run diagnostics and I'd assume that this takes a little longer than 5 seconds also, so once again, it's protecting the engine in case there are any issues.
Whatever the reason, the solution is simple: Don't rev the sh*t out of your car once you start it
- Gholdwayne
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so how much time does the car need from a stall reignition to be able to go past 6000 ?
and how much time from a cold start ?
and how much time from a cold start ?
97 GPX Icelle Blue
I cant stop driving her!
...and when im not, im looking at her!
... ...and when im not, im freakin thinking about her!
FTO[For The Orgasm]
like For The Win!, but more hardcore...
I cant stop driving her!
...and when im not, im looking at her!
... ...and when im not, im freakin thinking about her!
FTO[For The Orgasm]
like For The Win!, but more hardcore...
- vipfto
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well dont use the water temp gauge as meaning its up to temp. It takes around 5 to 8kms before oil pressure is at normal operating pressure and oil temp is normal that is when car is warmed upGholdwayne wrote:so how much time does the car need from a stall reignition to be able to go past 6000 ?
and how much time from a cold start ?
FTO GR-TURBO
172KW ATW @ 11PSI
172KW ATW @ 11PSI
- Bennoz
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The bit that takes the longest to get to optimum operating temp is the gearbox oil. Usually take twice as long as the engine water temp. I wait a good 15-20 minutes before letting loose on the throttle.
The FTO rev limiter is fuel operated by the ECU. When it senses you're heading up that way, it staggers the voltage going into the fuel pump.
The FTO rev limiter is fuel operated by the ECU. When it senses you're heading up that way, it staggers the voltage going into the fuel pump.