Speed Limiter Controller
#21
then why would a 5 speed be any different from a auto.
it would be the same damn thing... i wanna shift where i wanna shift in a race. im not sayin im gonna go out and pin the needle to 8 every time. i just hate how it shuts me down...the engine IS NOT gonna blow if you go over the limiter GET OVER IT!
i didnt buy my TC to just drive it like some old fart or some safety **** kid. i have upgrades coming and this is one thing i can get outta my way.
some of you people are Awsome and really cool and helpful.
other are just here to make things ruff and condratict EVERYTHING.
it would be the same damn thing... i wanna shift where i wanna shift in a race. im not sayin im gonna go out and pin the needle to 8 every time. i just hate how it shuts me down...the engine IS NOT gonna blow if you go over the limiter GET OVER IT!
i didnt buy my TC to just drive it like some old fart or some safety **** kid. i have upgrades coming and this is one thing i can get outta my way.
some of you people are Awsome and really cool and helpful.
other are just here to make things ruff and condratict EVERYTHING.
#22
ome of you people are Awsome and really cool and helpful.
other are just here to make things ruff and condratict EVERYTHING.
other are just here to make things ruff and condratict EVERYTHING.
So the helpful versus the contradictory are all helpful, just not how you'd expect.
#23
Originally Posted by LucidBD
then why would a 5 speed be any different from a auto.
it would be the same damn thing... i wanna shift where i wanna shift in a race. im not sayin im gonna go out and pin the needle to 8 every time. i just hate how it shuts me down...the engine IS NOT gonna blow if you go over the limiter GET OVER IT!
i didnt buy my TC to just drive it like some old fart or some safety **** kid. i have upgrades coming and this is one thing i can get outta my way.
some of you people are Awsome and really cool and helpful.
other are just here to make things ruff and condratict EVERYTHING.
it would be the same damn thing... i wanna shift where i wanna shift in a race. im not sayin im gonna go out and pin the needle to 8 every time. i just hate how it shuts me down...the engine IS NOT gonna blow if you go over the limiter GET OVER IT!
i didnt buy my TC to just drive it like some old fart or some safety **** kid. i have upgrades coming and this is one thing i can get outta my way.
some of you people are Awsome and really cool and helpful.
other are just here to make things ruff and condratict EVERYTHING.
I'm not here to lecture you, I'm just giving you and anyone else who might be considering getting rid of the rev limiter because they are trying to get all Fast and Furious and blow the redline of their engine, something to consider. Just don't be coming on to the General Discussion forum saying "I blew my headgasket". One last thing, hitting your powerband at it's optimum point is not being an old fart nor is it being a safety **** kid, it's just the way you should be shifting to go fastest.
#24
Why the hell would you really need to go over 130MPH?? I took my Celica GT-S to 145MPH and there is really no point. Unless you hit the limiter in the 1/4 mile why take it off there is no point.
#25
what is the redline on the Tc, i hear its around 5900 just want to know, if its around there do you think we are at a disadvantage when it comes to ther vehicles like teh mazda3 or teh celica with a higher redline
#26
Originally Posted by tc05
what is the redline on the Tc, i hear its around 5900 just want to know, if its around there do you think we are at a disadvantage when it comes to ther vehicles like teh mazda3 or teh celica with a higher redline
Now say you go turbo or do some other heavy mods that could greatly alter the powerband, then as long as the engine hasn't stopped producing power, the redline could be raised if the necessary internal work was done to support the added strain.
#27
My Apexi computer continuously logs me hitting 6580-6589 rpms whenever I hit the rev limiter. I've cleared the ECU and Apexi computer numerous times and get the same results, so our real rev limit is 6500. The Apexi tach shows identical rpms compared to my stock tach at low-high rpms so I know it's accurate.
On another note though, I still haven't been able to get the speed limit cut to work. This is due to the advanced braking control system that uses the speed sensor. The ECU isn't wired like most ECUs with a regular speed senspor pin, it goes through a second computer first.
Time will tell. We need a Helms manual or a Scion service manual haha..
On another note though, I still haven't been able to get the speed limit cut to work. This is due to the advanced braking control system that uses the speed sensor. The ECU isn't wired like most ECUs with a regular speed senspor pin, it goes through a second computer first.
Time will tell. We need a Helms manual or a Scion service manual haha..
#29
I will really want to get rid of the speed gov when we are finished with our mods plans so will be looking into it;)
as per one post, I do not believe any autos have syncros, none I have ever heard of in my nearly 53 years
Rick
as per one post, I do not believe any autos have syncros, none I have ever heard of in my nearly 53 years
Rick
#30
Originally Posted by pureXtC
just to make another comment on shifting past limiter its pointless to shift past ur power band and u could also cause valves to float so why bother
also... power band is something a lot of people don't fully grasp. If you redline then shift, you fall into a point where you're still making decen HP. If you shift right after your peak torque, once the clutch engages your rpms are so much lower that your torque goes down even more than it fell off at the higher rpms.
I could explain it more, as I'm sure some pople know. Basically at the track, max out 1st and 2nd... After that, learn your shift points, so when you shift you're still at optimum torque. It's an average that you're looking for.
#31
I have to pretty much agree. First and second are fairly low geared and you go through them quickly, third is a bit of a jump so it takes longer to pull through and you can deffinately feel the power dropping off at higher RPM's, I shift early into fourth, not real early.
If you really want to go fast, shift 200 RPM or so early from 1st to second but do not lift the throttle, keep it nailed, same to third gear, it will supprise your with how hard it hits(except into second as fairly heavy wheel hop can result, motor mounts will fix that) By shifting slightly early you help keep of the rev limiter.
Rick
If you really want to go fast, shift 200 RPM or so early from 1st to second but do not lift the throttle, keep it nailed, same to third gear, it will supprise your with how hard it hits(except into second as fairly heavy wheel hop can result, motor mounts will fix that) By shifting slightly early you help keep of the rev limiter.
Rick
#34
Originally Posted by raamaudio
I have to pretty much agree. First and second are fairly low geared and you go through them quickly, third is a bit of a jump so it takes longer to pull through and you can deffinately feel the power dropping off at higher RPM's, I shift early into fourth, not real early.
If you really want to go fast, shift 200 RPM or so early from 1st to second but do not lift the throttle, keep it nailed, same to third gear, it will supprise your with how hard it hits(except into second as fairly heavy wheel hop can result, motor mounts will fix that) By shifting slightly early you help keep of the rev limiter.
Rick
If you really want to go fast, shift 200 RPM or so early from 1st to second but do not lift the throttle, keep it nailed, same to third gear, it will supprise your with how hard it hits(except into second as fairly heavy wheel hop can result, motor mounts will fix that) By shifting slightly early you help keep of the rev limiter.
Rick
#38
Some of you guys are embarrasing yourselves;)
Making fun about what you are unaware of, lol!
Anytime you slam gears you are adding more wear on the whole drivetrain but leaving the throttle down if alot easier on the tranny and engine than lifting while slamming gears.
If you are serious about going fast, often, you will need a better clutch anyway, it is an expendable replacement part, the tranny and engine are not. Only bad thing, it is alot of work to install a new one but not costly for us that do all of our own work. Not lifting will not have that more effect on the clutch and if done properly may be easier on it, depends on how well you drive.
On another note: changing gearing will require changing the speedo calibration possibly, I have not determined where the reading is taken from just yet. Either way, the speed governor will still be in effect.
One idea I have is a circuit inline with the speed sensor to the ECU, once a preset value is reached, it limits the pulse count to say a 125MPH reading to the ECU. This would enable you to go faster but without a speedo changing with the velocity of the car past 125. I do not know if it would efffect any other parameter inside the ECU, Toyota has that pretty locked down. Sure wish I could get some schematics of the ECU!!!! I would adjust the rev limiter up a bit and delete the speed gov completely, yesterday
For now, the engine does not breath well enough in NA form to need a higher redline, under boost that would change a bit, even without a porting job. Ported would really awaken the top end. I am more concerned with bottom to midrange power, higher RPM would be mainly for not having to shift as often during autocross runs.
Ok, I have work to do, have a good day!
Rick
Making fun about what you are unaware of, lol!
Anytime you slam gears you are adding more wear on the whole drivetrain but leaving the throttle down if alot easier on the tranny and engine than lifting while slamming gears.
If you are serious about going fast, often, you will need a better clutch anyway, it is an expendable replacement part, the tranny and engine are not. Only bad thing, it is alot of work to install a new one but not costly for us that do all of our own work. Not lifting will not have that more effect on the clutch and if done properly may be easier on it, depends on how well you drive.
On another note: changing gearing will require changing the speedo calibration possibly, I have not determined where the reading is taken from just yet. Either way, the speed governor will still be in effect.
One idea I have is a circuit inline with the speed sensor to the ECU, once a preset value is reached, it limits the pulse count to say a 125MPH reading to the ECU. This would enable you to go faster but without a speedo changing with the velocity of the car past 125. I do not know if it would efffect any other parameter inside the ECU, Toyota has that pretty locked down. Sure wish I could get some schematics of the ECU!!!! I would adjust the rev limiter up a bit and delete the speed gov completely, yesterday
For now, the engine does not breath well enough in NA form to need a higher redline, under boost that would change a bit, even without a porting job. Ported would really awaken the top end. I am more concerned with bottom to midrange power, higher RPM would be mainly for not having to shift as often during autocross runs.
Ok, I have work to do, have a good day!
Rick
#39
Senior Member
Team Sushi
SL Member
Team N.V.S.
Scion Evolution
Join Date: Jun 2004
Location: Bangkok, Thailand
Posts: 4,322
You shouldn't be slamming gears. . . my brother worked with Jackson Racing (a race school), and you don't slam gears. You should be shifting perfectly, matching revs on downshifts, and lifting off the gas on upshifts. It's not your drivetrain that wears out; it's your clutch.