Allan_MA70 said:
I really dont want to get into this arguement, its besides the point.
Anyways i can take pics of mine i just want to see an 87 ecu, did anyone here get theirs modified?
And
ECU rev limit crystal modification.
- Thread starter SuprAng
- Start date
I really dont want to get into this arguement, its besides the point.
Anyways i can take pics of mine i just want to see an 87 ecu, did anyone here get theirs modified?
And
Allan_MA70 said:
Then this mod obviously isn't for you. Power bands change with big turbos. Some of us don't have full boost till 4500 rpms and need a little more rpm.
I was one of the guys that had my ecu (89') modded by him. He did it twice and it still stopped at 6600 rpm both times, DVM tach verified. There was someone on here that had a pre 89 ecu that did work though. I had pics of mine internally. If Jake doesn't want to pursue it I could send you them. If this could still become a reality it would be nice. Here's his site.
http://www.racerjake.com/index.html
I talked to jake, he gave me the info, since he no longer does it for supras. For him this only worked with pre 89's i want pics to see what other crystals there are, because i think the 89+ need more changed than the pre 89s.
Allen, why are you so insistent? Let it be. This isnt for you, get over it.
Allen, why are you so insistent? Let it be. This isnt for you, get over it.
so you need a higher redline for your t04 off a 1967 kenworth attached to your 7m-gte 
Please prove me wrong show me a dyno graph of a 7m-gte with stock cams / what ever turbo you like make'n usefull power over 6500rpm i'll be happy to see it!!!
and yes stock turbo on mine, im changing ECU before i modify the engine.
Please prove me wrong show me a dyno graph of a 7m-gte with stock cams / what ever turbo you like make'n usefull power over 6500rpm i'll be happy to see it!!!
and yes stock turbo on mine, im changing ECU before i modify the engine.
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Allan_MA70 said:so you need a higher redline for your t04 off a 1967 kenworth attached to your 7m-gte
Please prove me wrong show me a dyno graph of a 7m-gte with stock cams / what ever turbo you like make'n usefull power over 6500rpm i'll be happy to see it!!!
and yes stock turbo on mine, im changing ECU before i modify the engine.
Define useful. If it's running a P trim or larger on the hot side it just isn't coming on until 4300-4500 rpms. What truck turbo are you talking about? :nono: A turbo that will make 500 + rwhp will have alot lag on a 3 liter motor. A friend of mine asked why I always hit the rev limter in 1st and 2nd. For me, If I roll onto the throttle in second gear, the second after I have full boost bam, rev limiter, shift to third. Even if the power drops after 6500 it is still power we can use. If I make 550 hp at 6.5k but only 450 hp at 7K that's fine. It's still 200 rwhp more than you are making at any rpm. At least I will have a little more room in second if I need it. Without ever having driving a car with that much power and such a small power band you will never understand or just refuse to understand why some people need this.
Clifton said:
:nono:
yep great push 500rwhp out of a stock ecu equiped car thats going to be really tuned for optimum advance off boost to help eliminate lag and also that fuel map owww thats going to be great, oww and 500rwhp with stock cams??? thats even better!
why dont you put a pin on the throttle with it spring loaded to WOT so when you throw it down the 1/4 mile its even more like a greanade!
Allan_MA70 said:
:3d_frown:
STFU already, good for you, no one else fuckin cares what you think. All you are doing is impeding progress on this. If i want to run high rev limit and blow my engine its my prerogative. Ya 500rw on stock ecu and stock cams, you got a problem? Take your slow car with your big $$ "ecu mod" and cams be happy in knowing that you think you know supras.
Anyways since i cant get pics of both ecus (guess ill just have to find it myself)
heres the info jake gave me. It will be a while til i can attempt this on my ecu since no one here really knows much about this. Anyways this should be fairly straightforward for you 87 guys.
stock according to jake is 4.196 mhz, so a 4.4 should put you around 6900 and so on. Thanks to jake for letting this info out.
Ang
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Adjuster
Supramania Contributor
500 to 1000 extra rpm before it cuts would be nice sometimes for sure. (Even on stock cams.)
My power peaks just before 6k on this current setup, but with a bigger turbo, and the higher flow, I'm expecting to pull to redline again. (With the stroker setup, my dyno's look like an upgraded CT these days, great for around town, and with about 100+ more HP and tourqe.)
However, it's now falling off at 5500 like it did on the CT and stock motor. (Need a bigger turbo clearly.)
My power peaks just before 6k on this current setup, but with a bigger turbo, and the higher flow, I'm expecting to pull to redline again. (With the stroker setup, my dyno's look like an upgraded CT these days, great for around town, and with about 100+ more HP and tourqe.)
However, it's now falling off at 5500 like it did on the CT and stock motor. (Need a bigger turbo clearly.)
Not wanting to take sides here but wouldn't changing the clockspeed/frequency on the crystal affect the scaling for ALL of the ECU's operations? (my understanding is it's all based on time/operation %)
Allan_MA70 said:
Hmm, I've been doing it (500+) for 2 years without any problems. WTF are you talking about fuel maps for now :3d_frown: ? WIDEBAND, nearly everyone making power has one and a way to tune there fuel curve but you. When you achieve that kind of power let us know how much you've spent on cams, ecu and all the other BS that isn't manditory for that kind of power. Oh wait you're just some broke ass dick "MA45+MA70=poor man" who gets off on telling others what won't work when they really have no idea or first hand experience in what they are talking about other than what they have read online and regurgitated. Go save up for your upgraded CT and MHG and leave us alone.
IJ. said:
yes it would, picture it as a stretching of all the maps, but they are all stretched in the same proportions, so the car can still work and function properly.
williamb82 said:
a 4.9 will get you 7600. This is all assuming your stock rev limit is 6500 where mine is not thats why i think a 4.9 would be ~8k for mine.
outofstep said:
No he didnt, i bothered him enough i think. If i can find a p/n ill post it up.
Ang
Here's a thought... can we get a high rez photo of an ECU that shipped with the 7M crank, and another that shipped with the 6M crank, then compare the two and see what Toyota did to drop the rev limit?
If there is a physical difference, it should logically be easy to go the other direction and increase it.
If there is a physical difference, it should logically be easy to go the other direction and increase it.
isnt the stock rev limit like 7200? I mean the redline is 6500, but I think I've seen the needle bounce to 7200...
IHI-RHC7 said:
it cuts fuel not spark.
anyways, thats what i was thinking grimjack, but no one has their ecus out so they can take pics.
CTsupra
Supramania Contributor
GrimJack said:
Dave, I know there are pics, or at least talk about this on sf somewhere. AFAIK, the difference between the two cranks is the 7m crank has two more counter weights on it than the 6m crank. The extra weight is why Toyota lowered the redline. I might be wrong about the number of extra weights, but there is at least two.