ECU rev limit crystal modification.

[SuprAng]

I recall there being a guy that put a crystal in our ecus with different timing. Anyways i think hes not doing 7m ecus anymore for whatever reason. Any idea if he ever announced the stock timing of those crystals? If we knew that we could just get the proper % and do it ourselves, or have some computer nerd do it lol... Either way if anyone has any info, lmk. I want 8000rpm of goodness for next season.

Ang

 

[CTsupra]

Hi Ang.

i know what you are talking about. i think this was on sf wasn't it? don't know if you posted this over there yet, but try to search for it there.

 

[SuprAng]

na im pretty sure the guy was a sponsor here, i did have a thread about increasing rev limit on sf. So im pretty aware of every possible way, this seems to be the cheapest and easiest.

either way ill do a search and see if i can come up with the timing...

edit: nada on sf.

 

[Reign_Maker]

Id like to know too, because Ive had alot of head work done and could definately bump it up to 7000-7200 rpm... Also, Im still pullin alot of power up top, so it owuld be nice to have more room...

Keep us informed on what you find out...

 

[MDCmotorsports]

I heard of the same thing but for the mr2's.

Would be nice to be able to make power till 7-9k since my head alone costs more than most people's engines complete.

 

[CTsupra]

yeah, nothing on sf. though i came across this thread: www.supraforums.com/forums/showthread.php?t=229633&page=1&pp=10highlight=increasing+rev+limit

^ this is what you are talking about right? the link to the lonnnng ass thread you started is on the second page. and, of course, it did say that thread about it was on here. must have been way before the hacks.

back to searching. i want to know too.


edit: argh. gay! stupid sf and not maitaining their old links.

 

[CTsupra]

it was something about a mr2 guy who reclocked his ecu, and would do it for us.

edit: search this on sf: " ecu ^revlimiter mod " if you want to take a look.

 

[chevyeater]

Apparently, the mod he (Racer Jake) was doing on the MR2 ecu wasn't working consistently with the 7M ecu. Sometimes it would work, sometimes not. He stopped offering it for our ecu due to that reason.

Reg Reimer can change the rev limiter in your stock ecu or you could go standalone. You'll need one or the other to properly tune an engine sufficiently modified to take advantage of an extended RPM range anyway.

 

[GrimJack]

Chevyeater is correct.

He was advertising here, but his results were not 100%, and he was not happy about that, so he asked to be removed.

For the cost to have Reg modify your ECU, I'd just go for an AEM EMS. A little bit more coin for a LOT more options.

 

[williamb82]

ok, does anyone here have an ecu he modified and can they pull the cover and tell us which crystal he replaced and with what crystal? seems a generic mod to me. just slows the clock speed iirc. and could slow it 5 or 10%. 5% was 7200 and 10 was like 8k if i remember right. id want 7200 on stock valve train. i wont bother with the 8k as ill go standalone on that engine.

 

[GrimJack]

Unlikely... I don't think he did more than a couple.

He might be willing to part with the information, try searching for Racer Jake on the MR2 forums, and see if he's willing to point out what / where his idea was.

 

[shaeff]

this is his site:

http://www.racerjake.com/

-shaeff

 

[SuprAng]

i sent him an email from an old thread i found on here cached.
waiting for a reply.

Ang

 

[SuprAng]

Anyone have a nice hi res picture of an opened up ecu they can post or link up? Both an 87-88 and 89+ if possible.

 

[Mr.SelfDestruct]

i can probly get one pretty easily, my interior IS stripped after all...

you'll have to wait till I get home, though

 

[SuprAng]

thanks dude. Did anyone from here actually get it done? I think it was the 89+'s that didnt work, Jake was nice enough to give me the info i asked for, ill post it when i get home.

 

[shaeff]

nice! i wouldnt mind increasing my rev limit a bit... (pre '89 here)

-shaeff

 

[outofstep]

heh... I tried to find my ECU because I had it out to take some pictures. I think gnomes stole it though.

 

[Mr.SelfDestruct]

I'm sorry, but I didnt realize how much of a job it would be, so I cant get it out at the moment, but I plan to relocate it sometime in the near future(probably next week), so I'll probably be able to get some then.

 

[Allan_MA70]

why bother unless you have cams etc its not worth it... and if you have spent the $$$ on cams you would be well stupid not to have an aftermarket tuneable ecu!