[Monster Hui]

i've been playing around with it but have no success yet.. just wondering if anyone has successfully raised the rev limiter with the EMU?

 

[killer2239]

i dont think you can raise your redline with piggy backs. ??

 

[Gravel]

i've been playing around with it but have no success yet.. just wondering if anyone has successfully raised the rev limiter with the EMU?

Do our cars cut fuel or ignition or both? Looks like the EMU can only fix a fuel cut limiter.

I still can't understand why the EMU needs the stock ECU signals - it has direct control of the sparks and fueling - but I suppose they'd need to get their knock-sensor software working first.

 

[wts]

Do our cars cut fuel or ignition or both? Looks like the EMU can only fix a fuel cut limiter.

I still can't understand why the EMU needs the stock ECU signals - it has direct control of the sparks and fueling - but I suppose they'd need to get their knock-sensor software working first.

1ZZ/2ZZ uses a fuel cut revlimiter. The Emanage needs to be wired into the stock ECU so it can send it the confirmation signals its expecting. Otherwise, it would store DTC's and light the CEL. It may even go into safe mode but Im not sure about that.
Probably throw a rash of P030X and PO13XX codes.

 

[Gravel]

1ZZ/2ZZ uses a fuel cut revlimiter. The Emanage needs to be wired into the stock ECU so it can send it the confirmation signals its expecting. Otherwise, it would store DTC's and light the CEL. It may even go into safe mode but Im not sure about that.
Probably throw a rash of P030X and PO13XX codes.

What sort of confirmation signals do you mean? Surely the ECU stops firing the injectors and just assumes the engine will stop accelerating? The car is pretty much guaranteed to be in open-loop if you're banging into the limiter without a downshift.

Yes, the ECU could tell that the car isn't slowing but it doesn't throw a CEL if you drop into 2nd at 66mph - the car just revs like mad!

From reading the EMU docs, it sounds like the EMU will just run the same injector pulses as it was running a couple of hundred revs below the factory cut-off. This is a bit crude, but should work, shouldn't it?

 

[jlitman]

1ZZ/2ZZ uses a fuel cut revlimiter. The Emanage needs to be wired into the stock ECU so it can send it the confirmation signals its expecting. Otherwise, it would store DTC's and light the CEL. It may even go into safe mode but Im not sure about that.
Probably throw a rash of P030X and PO13XX codes.

I'd like more info on how to set this up too. I was planning on experimenting with this soon.

 

[wts]

Sorry I dont even have en EM-U. So Im no help on the rev-limiter.
But havent you ever wondered why theres 8 wires (4 in / 4 out) going to the coils instead of just 4?

Toyota designed the system to require a feedback pulse to confirm that the coils fired the plugs. I thought it did the same with the injectors but I could be mistaken.

 

[black_78]

Hi bros...

Noticed that, I could rev the GTS auto upto 7950 once in a while with the on OFF but still on auto mode not shift-tronic. Why?

 

[sbocaj55]

did you play with the automatic shift adjustments? Does that work?

 

[black_78]

Not sure

Not sure bro, as far as i know, mine is stock like that. even b4 my emanage. Any thoughts on this?

 

[zuoom]

typcially the auto ecu will start to cut the fuel at 7800rpm.

i think you manage to hit that high when you down shift? the highest rev it went on mine was 80xx rpm. but it was via fluke i think. usually if i do the upshift, it will cut just pass 7800...

 

[jlitman]

typcially the auto ecu will start to cut the fuel at 7800rpm.

i think you manage to hit that high when you down shift? the highest rev it went on mine was 80xx rpm. but it was via fluke i think. usually if i do the upshift, it will cut just pass 7800...

So what wire exactly on the ECU needs to be connected to the emanage?

 

[zuoom]

no idea doc.

haven't seen much info on the ultimate yet..

 

[The__J__Factor]

i read through the manual and found the rev limiter window in the program, so it will let u change it. i dont have an e-mange so i cant try it for u...

but if u go to the parameter settings window, when it opens tick the box on the right hand side that says rev limiter cut settings.

it will now ad the rev limiter cut settings window to ur map tree. double click that and it will open it up and let u change the rev limiter.

 

[303-rice-boy]

cool someone go try that and tell us if it works or not

 

[Monster Hui]

typcially the auto ecu will start to cut the fuel at 7800rpm.

i think you manage to hit that high when you down shift? the highest rev it went on mine was 80xx rpm. but it was via fluke i think. usually if i do the upshift, it will cut just pass 7800...

No, stock ecu does not let you downshift to rev up that high. You can't downshift into the vvtl-i let alone anywhere near the rev cut. Stock limiter is at 7850, you will hit that every time if you are WOT all the way to the limiter and not let go of throttle; however, i've recorded as high as 8100rpm when im upshifting (letting go of throttle right before rev cut and up shift), but that is just when the engine is almost say free revving, you are not getting any power through this.

i read through the manual and found the rev limiter window in the program, so it will let u change it. i dont have an e-mange so i cant try it for u...

but if u go to the parameter settings window, when it opens tick the box on the right hand side that says rev limiter cut settings.

it will now ad the rev limiter cut settings window to ur map tree. double click that and it will open it up and let u change the rev limiter.

it isn't the matter of getting the windows opened and check the boxes and such, but actually having someone successfully changed the stock limiter with the EMU. No one is saying the emange doesn't have the fucntion or that it doesn't work, just that no one has reported a success in changing the rev limiter with a EMU on a 7th gen celica.

 

[The__J__Factor]

^ ow ok, just thought it sounded like no one new if it could do it/how to so i thought i would post the window coment.

anyway i dont have a EU so i cant test it out for u

 

[jlitman]

I've been searching online for moreinfo on how exactly to get the rev limiter working, and so far I've found this... http://forums.maxima.org/showpost.php?p=4574521&postcount=380

Also, looks like you need to download the newest software update -- v 2.0 from mohdparts.

Still searching...

 

[Monster Hui]

actually i totally forgot to download that for mine.. but the car has hit another boo-boo i haven't actually touched it for the past 2 weeks. Going to play with it once i get it on the road.

The new software fixes the knock sensor bug on the EMU too.. i couldn't get it to show up on the old software but that was the same with two other shop cars that are running EMU. Will try it and hopefully get the knock to work on the EMU

 

[Gravel]

actually i totally forgot to download that for mine.. but the car has hit another boo-boo i haven't actually touched it for the past 2 weeks. Going to play with it once i get it on the road.

The new software fixes the knock sensor bug on the EMU too.. i couldn't get it to show up on the old software but that was the same with two other shop cars that are running EMU. Will try it and hopefully get the knock to work on the EMU

You're running the Greddy s/c aren't you? Is the knock sensor even on our harnesses? I know the deleted the temp sensor wires, and I thought they'd removed the knock sensor as well :shrugs: