Mk2 Mr2 Rev Limiter Help!!!!!!

[logimier]

ok so ive been asking for help with my MR2 and thanks for the help guys.....ive been asking for the wrong help.... now i just found out these came with a rev limiter? if thats correct is their an easy way to remove this and how much is it? 5000 rps is getting really annoying plz help me.. thanks in advance.....

[TheEngineer]

ummm....a rev limiter is there to protect the engine. You cant just wrap up to 7k and be fine.

[logimier]

is their a way to get rid of this? 5000 rpm limiter so that i can hit redline?

[toyotaspeed90]

Originally Posted by TheEngineer

ummm....a rev limiter is there to protect the engine. You cant just wrap up to 7k and be fine.

actually that's a pretty incorrect statement....

for the most part the limiters are set based on the how the ecu and valvetrain are tuned -- and also kept in mind in terms of the engine being widely used....

Most toyota motors that use a belt are non interference -- so if something were to go wrong, no big deal. Usually what actually is a better reason not to rev higher is because there just isn't power.... the engine will start to drop off in power and then after that, will have valve float problems..... but still isn't a huge issue.

my smallport 4age in my ae92 has been running to 7800 all the time (factory on the ecu I have is 6200 and factory on the 4age is around 7200) without a problem -- in fact, in 100% stock trim the 4age's make power to around 8,000 and I would guess won't see valve float until around 8,500.


However, if the OP is having a problem with a limiter at 5,000 rpm then there is a problem -- something is causing you to be limited lower than the actual limiter. Figure out the problem before you try to remove stuff.


In toyota ECU's it isn't simple to remove the limiter. I'm sure you could pay some rediculous amount of money for an aftermarket unit, but there are other ways.

[logimier]

I understand its not safe at all i got that part.... Now can someone just tell me how to get rid of the limiter chip it or what PLZ........

[ralpher]

just get a jdm engine then u wouldnt have this problem

[MR2Jedi]

The limiter is not whats keeping you from going over 5000rpm. The limiter doesn't kick in till after 7200rpm. You have some other issue(s) that hasn't been resolved yet.

[toyotaspeed90]

Originally Posted by logimier

I understand its not safe at all i got that part.... Now can someone just tell me how to get rid of the limiter chip it or what PLZ........

dude, you need to read....

1 of 2 things is happening....

1) one of your sensors isn't allowing the ecu to do it's job and it's physically stopping the engine from revving to where it can't properly control all factors and may destroy your engine

2) your engine has an internal problem that is physically not allowing it to rev higher


this isn't a case of "I need more rpm's" this is a case of there's something WRONG with your car.

[Ghostyman]

What gas are you running? If you're on 91 octane (Pasadena, CA?), you could be having problems with the JDM ECU (you said the car was RHD). JDM engines are tuned for higher octane than we have in Cali and have a lot more timing advance to take advantage of that. If you had 93 or higher gas, you might be fine.

Do you have access to a USDM ECU or high octane gas?

And please try to read what people are saying, not what you want to read. There is no "chip" for the rev limiter, it is hard-coded into the ECU. If you got your ECU reflashed by ATS Racing or went with a standalone engine management system, you could change the rev limit. But this is not the problem you are experiencing.

Originally Posted by ralpher

just get a jdm engine then u wouldnt have this problem

He has a JDM engine already. And even if he didn't, why would it matter? His JDM tyteness (y0) might be the reason he can't rev higher with this gas.



And from the other thread about the same problem because it's important:

Originally Posted by logimier

anyway im having a problem when the engine is just turned on and i try floring it it kinda pulls back a bit i hope thats normal..

To reiterate myself, don't do this.