I don't drag race my EVO, I certainly wouldn't want Mitsu to somehow trace my post and revoke my warranty. So, I'll just post about some guy that I saw drag race his '05 EVO

Fully stock '05 EVO, less than 1000 miles, following the first oil change.
14.0 @100 MPH with a 2.1 60' 94 octane Sunoco, launching at 5k

As Nate told me, a stock EVO, with it's corked exhaust, needs to be rev'ed to about 6500 RPM and the clutch dropped in order to not bog and not glaze the clutch (assuming sticky track here). The problem with the '05 is that it has a 5k rev limiter that is enabled whenever the clutch is depressed more than an inch; basically, a built-in 2-step rev-limiter. It's quite likely that the ECU also pulls a bunch of timing when this rev-limiter is engaged--would be interesting to log. Hence, I suspect it will be difficult to get a good 60' on the '05 without adding more power or removing that 5k limiter.

That being said, the 5k limiter is easy to disable. The '05 clutch pedal has three switches associated with it, that's one more than the '03-04:
-- top one is the cruise control switch (yes, I know we don't have cruise, but it's what that switch does on the DSM--cancels cruise when the clutch is depressed more than one inch)
-- bottom switch is the starter interlock, won't start unless this is depressed.
-- 5k switch is at the top, behind the fuse relay panel; very difficult to see, but it can be reached.

To disable any of these switches, you just unplug the connector. If you want to re-enable the switch you just plug the connector back into the switch.

Unlpug the connector to that 5k switch and the 5k rev limiter will go away allowing launches at any RPM. Of course I would not recommend this because the whole purpose of the 5k rev limiter is to limit potential damage to the clutch, drivetrain, etc. Thanks goes to Leon's pit crew for locating this switch/plug ...

 

Wow thanks for the good info .. This sure will help a lot of my 05 EVO friends!

 

If the revlimiter is pulling timing it should actually build boost. If it is just cutting fuel and spark where it is a smooth revlimit it is means it wont make any boost.

I wold think mitsubishi put that in so people wouldnt launch off the revlimiter. It should be pretty easy to disable though.

 

where exactly are these switches located? do you think you could post some pics? my friend hasn't dropped his clutch at anything above 3k rpms yet, but plans on getting some track time next season.

 

Sorry, I wasn't clear. I don't think it's pulling ignition timing in order to hold the RPMs at 5k, just that once the clutch is released the car feels kind of flat, as if the ECU is not allowing full timing advance. Now that you mention it, the 5k rev limiter does feel softer than the TMO 2-step I had in my DSMs. I wouldn't be surprised to see that it doesn't build much of any boost in a stock '05 EVO. Again, it would be interesting to log the whole event.

Yup. It is easy to disable, just unplug the switch (see post above)

 

it does build boost, I was seeing about .5 - .6 bar.

 

Follow the clutch pedal up to the pivot point under the dash. Against the firewall you'll see the starter interlock switch (clutch has to be down to hit switch and allow the car to start)--unplug this and the car will start without the clutch pedal being down.

Right at the pivot point you'll see another switch with a white plug. This appears to be just wired into the starter interlock, but on other cars it is used to cancel cruise control when the clutch is depressed.

Now, the OEM 2-step switch is above the pivot point. I couldn't see it from under the dash, but I could feel the switch and plug. Unplug this and the OEM 2-step is disabled. Sorry, no pictures...I don't think I would be able to see the switch to take a picture of it without removing the lower dash cover...

 

Thanks! I really need to install a boost gauge. Now we just need to get someone to log it and see what happens with timing.

 

Are you sure....I never knew that, I'll try it today when I leave work today. After I get the Apexi Power FC I wouldnt have the 5k limiter any more

 

I thought there was a fuse you could pull that would disable it

 

I don't think there is a fuse that would disable the 5k 2-step rev limiter and leave the car driveable. Looking at the wiring diagram (RRE site), I can't see a fuse that would relate to the clutch switches, although that diagram is not for an '05. To disable the two-step with a fuse, the fuse would either have to interupt the sensor/switch circuit or block the ECU function. I'm assuming the two-step is just added code in the ECU, so I don't think that could be disabled with a fuse.

The plug on the clutch switch isn't too hard to disconnect, it's just hard to see. I reconnected one over the weekend and shot some pictures; I'll try to post them later.

 

I Have a 05' and I was having trouble launching @ 5k it seems this might be why!!

 

Thanks for the info, I'll try disconnecting that crappy rev-limiter switch!!

 

just be sure to plug it back in before you take your car in for oil or something

 

i launched the car off the 5k limiter yesterday, it took off fast and had no problem breaking traction on all four tires w/o clutch smell. also occassionally, i can get the car to rev past the 5 k limiter depending on how much i preload the clutch.

that guy w/ the 2.1 60ft. just didn't know what he was doing.