how can i stop the car from twitching when i hit redline

Discussion and technical advice the SW20 MR2. 3S-GTE, 3S-GE, 3S-FE etc
Anything and everything to do with maintenance, modifications and electrical is in here for the Mk2.

Moderators: IMOC Moderators, IMOC Committee Members

QUOC2008
Posts: 753
Joined: Thu Apr 11, 2013 4:33 pm
Location: london

how can i stop the car from twitching when i hit redline

Post by QUOC2008 »

how can i stop the car from twitching when i hit redline...?
Im running 450bhp witn a 2 way lsd and the car twitches everytime i hit redline the rear just wiggles asoon as the rev limiter comes in.
MR2 REV 3 TURBO 450BHP
3000GT VR4 TT 500BHP
EVO X FQ360
rev3turbo
Posts: 811
Joined: Tue Jul 30, 2013 7:51 am

Re: how can i stop the car from twitching when i hit redline

Post by rev3turbo »

dont hit the limiter? :-s
Draven
Posts: 14965
Joined: Fri Feb 10, 2006 8:34 am
Location: One of the Hamptons.
Contact:

Re: how can i stop the car from twitching when i hit redline

Post by Draven »

Don't red line it. #-o
bobhatton
Posts: 3351
Joined: Fri Aug 25, 2006 9:34 pm
Location: Bodmin Cornwall

Re: how can i stop the car from twitching when i hit redline

Post by bobhatton »

Reprogram the ECU to give you another 1000 rpm before the rev limiter.
Designer for turbo set ups on F1 cars, and Nitrous Oxide Systems of the USA in the 80s
Ryan S
IMOC Moderator
Posts: 10902
Joined: Sat Dec 10, 2005 1:32 pm
Location: Bonnie Dundee
Contact:

Re: how can i stop the car from twitching when i hit redline

Post by Ryan S »

bobhatton wrote:Reprogram the ECU to give you another 1000 rpm before the rev limiter.



this is actually something you could do yourself I suspect, I've only used the G4 software a couple of times and I could figure out how to do that :thumleft:
QUOC2008
Posts: 753
Joined: Thu Apr 11, 2013 4:33 pm
Location: london

Re: how can i stop the car from twitching when i hit redline

Post by QUOC2008 »

Its not easy all the time to perfectly shift without hitting the limiter... whats this g4 software? How do you mapp it out? And rising the limiter i would love to do but would there be any problems after :$ car forged etc etc...

Im still learning how to drive this devil of a car that so unforgiving
MR2 REV 3 TURBO 450BHP
3000GT VR4 TT 500BHP
EVO X FQ360
SonicSW20
Posts: 3681
Joined: Mon Nov 29, 2010 7:54 pm

Re: how can i stop the car from twitching when i hit redline

Post by SonicSW20 »

Do you have a dyno chart? You might not even need to go all the way round to the limiter (or just before) to get the most out of it.
QUOC2008
Posts: 753
Joined: Thu Apr 11, 2013 4:33 pm
Location: london

Re: how can i stop the car from twitching when i hit redline

Post by QUOC2008 »

Image
MR2 REV 3 TURBO 450BHP
3000GT VR4 TT 500BHP
EVO X FQ360
SonicSW20
Posts: 3681
Joined: Mon Nov 29, 2010 7:54 pm

Re: how can i stop the car from twitching when i hit redline

Post by SonicSW20 »

Looking at that graph, you don't need to rev it all the way to the red line - changing at around 7k should result in max acceleration as your power starts to drop off a little there, and you'll still be dropping it in that nice flat bit of the torque curve.
raptor95GTS
Posts: 6213
Joined: Tue Dec 14, 2004 7:14 pm
Location: glasgow
Contact:

Re: how can i stop the car from twitching when i hit redline

Post by raptor95GTS »

yeah defo try changing before 7krpm, no need to rev further than that since you're not making any more power up there.
Ryan S
IMOC Moderator
Posts: 10902
Joined: Sat Dec 10, 2005 1:32 pm
Location: Bonnie Dundee
Contact:

Re: how can i stop the car from twitching when i hit redline

Post by Ryan S »

QUOC2008 wrote:Its not easy all the time to perfectly shift without hitting the limiter... whats this g4 software? How do you mapp it out? And rising the limiter i would love to do but would there be any problems after :$ car forged etc etc...

Im still learning how to drive this devil of a car that so unforgiving


it's the software used for mapping the link g4 ecu. you;d need to find out what software your ecu uses depending on what ecu you have :thumleft:

as already pointed out you could shift gear earlier though.
shinny
Posts: 2345
Joined: Mon Nov 27, 2006 4:59 pm
Location: Reading, UK

Re: how can i stop the car from twitching when i hit redline

Post by shinny »

QUOC2008 wrote:how can i stop the car from twitching when i hit redline...?
Im running 450bhp witn a 2 way lsd and the car twitches everytime i hit redline the rear just wiggles asoon as the rev limiter comes in.


Of course it does!! You're going from 450bhp to zero in a split second, so I'd expect the LSD to lock up and the car to squirm #-o

As others have said, either learn to drive better or increase your rev limit :wink:
QUOC2008
Posts: 753
Joined: Thu Apr 11, 2013 4:33 pm
Location: london

Re: how can i stop the car from twitching when i hit redline

Post by QUOC2008 »

Thanks for the help guys... i gonna think about it.

Changing early is easy said then done when it hits full boost from 4000rpm you 0.10s of a seconds to change in 1st and 2nd gear im not that fast on changing gears if you guys know a special way let me know... lol

Right now im just comfortable in the spooling of the turbo power band otherwise things get a bit twitchy
MR2 REV 3 TURBO 450BHP
3000GT VR4 TT 500BHP
EVO X FQ360
Odin_S
Posts: 1210
Joined: Wed Jul 19, 2006 3:35 am
Location: London

Re: how can i stop the car from twitching when i hit redline

Post by Odin_S »

Change back to standard LSD, i see no reason for a 2 way on a road car
QUOC2008
Posts: 753
Joined: Thu Apr 11, 2013 4:33 pm
Location: london

Re: how can i stop the car from twitching when i hit redline

Post by QUOC2008 »

Odin_S wrote:Change back to standard LSD, i see no reason for a 2 way on a road car


I was thinking this would fix the issue... 1.5way lsd which is standard. I think this lsd can be adjusted to 1.5 way
MR2 REV 3 TURBO 450BHP
3000GT VR4 TT 500BHP
EVO X FQ360
Rev5GT
Posts: 1669
Joined: Mon Jun 19, 2006 9:13 pm
Location: West Yorkshire

Re: how can i stop the car from twitching when i hit redline

Post by Rev5GT »

QUOC2008 wrote: hits full boost from 4000rpm you 0.10s of a seconds to change in 1st and 2nd gear


I want a passenger ride in your car :mrgreen: :thumleft:
Draven
Posts: 14965
Joined: Fri Feb 10, 2006 8:34 am
Location: One of the Hamptons.
Contact:

Re: how can i stop the car from twitching when i hit redline

Post by Draven »

Rev5GT wrote:
QUOC2008 wrote: hits full boost from 4000rpm you 0.10s of a seconds to change in 1st and 2nd gear


I want a passenger ride in your car :mrgreen: :thumleft:


That does sound insane
nathan.z
Posts: 529
Joined: Fri Jul 27, 2012 10:09 am

Re: how can i stop the car from twitching when i hit redline

Post by nathan.z »

QUOC2008 wrote:Thanks for the help guys... i gonna think about it.

Changing early is easy said then done when it hits full boost from 4000rpm you 0.10s of a seconds to change in 1st and 2nd gear im not that fast on changing gears if you guys know a special way let me know... lol

Right now im just comfortable in the spooling of the turbo power band otherwise things get a bit twitchy


Sequential gearbox? :whistle:
QUOC2008
Posts: 753
Joined: Thu Apr 11, 2013 4:33 pm
Location: london

Re: how can i stop the car from twitching when i hit redline

Post by QUOC2008 »

I guess some people are that good superman but im not superman ... free rides yeah no problems but i cant guarrante ur safety
MR2 REV 3 TURBO 450BHP
3000GT VR4 TT 500BHP
EVO X FQ360
QUOC2008
Posts: 753
Joined: Thu Apr 11, 2013 4:33 pm
Location: london

Re: how can i stop the car from twitching when i hit redline

Post by QUOC2008 »

Rev5GT wrote:
QUOC2008 wrote: hits full boost from 4000rpm you 0.10s of a seconds to change in 1st and 2nd gear


I want a passenger ride in your car :mrgreen: :thumleft:


Anytime rev5GT in london
MR2 REV 3 TURBO 450BHP
3000GT VR4 TT 500BHP
EVO X FQ360
Post Reply

Return to “MR2 MK2 1990 - 1999 NA & Turbo”