1jz Standalone Engine Management

[boosted4life]

Hey everyone. Im new here, im now an owner of a 1jz 1987 supra with blitz twin turbos. The ECU is blown in the car (wont rev over 1500-2000). I was considering going standalone so I can just replace the ECU all together and then I can have excellant tuning capabilities.

I was looking for some opinions on which standalone system to go with. I really wanted to go with an apexi power fc but I heard they were discontinued for the 1jz... is this correct? if so, why does this company still sell them: http://www.mamsparts.com/product_info.php?products_id=37747

I was also looking at the ems stinger, but I was really wanting somthing plug n play and as far as I know this system needs some wiring and tuning before the car will run.

I looked into the 2jz AEM EMS with a 1jz harness, but I have heard they are bad as daily drivers and they need to be tuned a lot.

Does anyone have any opinion as to what system is best? I am also on a budget so I cannot afford somthing rediculous. Also, the car will be driven on the streets quite a bit. Thanks everyone!!

 

[str8_6]

www.driftmotion.com make a plug and play for the stinger ems.

there are endless arguements of aem.

power fc - i cant confirm that its discontinued, but keep in mind just cuz something is d/c doesnt mean someone still have them brand new. they might've bought it in bulk and haven't sold it yet.

i rec. doing endless research. there are just too many factors.

nice buy! i saw that car on craigslist. looks clean and pimp status for the upgraded twin

 

[tissimo]

AEM EMS is fine for a daily driver. I daily drove my 1jz and 2jz with the mkiv AEM EMS, and now daily driving my Celica with the aem ems in it. You just have to have a good tune. A 50k ems will drive like ass if the tune sucks.

Stinger is a decent unit and is pretty affordable. Many people on this board have it and love it.

IIRC the Power FC wasn't acutally made by Apexi for the JZA70, another company made it for the cars. They are discontinued.

 

[boosted4life]

are you sure the stinger is plug and play off driftmotion?

 

[tissimo]

are you sure the stinger is plug and play off driftmotion?

call them and talk to them, they should be able to answer your questions.

remember, it may be plug and play, but is no where near plug and boost.

 

[suprahero]

The plug and play cost another 200 or 250.00, but it only takes about five minutes to install. There is a Stinger thread on here as well that has lots of tunes and one will fit your build and be good enough for you to do some fine tuning with once you get it installed. I highly recommend the Stinger. Good luck.

 

[boosted4life]

thanks for the help everyone!! Another question.. is it overkill for me to go with 800cc sard injectors on my setup? running with blitz k26 twin turbos / k27 compressor upgrade. Also, what can the stock intercooler handle and whats a good upgrade as far as intercoolers go? thanks!

 

[jza71]

If you find JZA70 Power FC for under $1500 with the commander, do not let it pass you by. A true plug n play stand alone ECU, no tuning require until you want to really get some serious power. :evil2:

 

[boosted4life]

If you find JZA70 Power FC for under $1500 with the commander, do not let it pass you by. A true plug n play stand alone ECU, no tuning require until you want to really get some serious power. :evil2:

yah, thats why i was wondering what was going on with that website.. is it discontinued or not?

 

[Bigzavs]

its been discontinued

but you can still find them every once in a while

JPSTrading on Ebay has them every now and then

 

[suprahero]

I bought a set of SARD 540's and they ended up flowrating 624cc within one cc of each other. I don't think you'll hit 800rwhp with the twins, but you never know. If you plan on making 700-800rwhp then those aren't overkill. I don't know what your long term goals are.

I like the Stinger, and that's all I"m going to say about that.

 

[86_sports_1jz]

sorry man i'm not trying to jack your thread but do you guys know if there is a difference between an aem ems for a honda (the 30-1040) and the 2jz aem ems (30-1100)? i know the ecu plug-ins are different but are there any other features that the honda doesn't have that the 2jz one will? like the anti-lag in between shifts or are they all the same?

 

[suprahero]

I don't know for a fact, but I thought I read in another AEM thread yesterday that they are car specific. I think Tissimo posted it up, but I couldn't swear to it in court.

 

[86_sports_1jz]

okay i was thinking they are the same except for the plug-ins to i would just make a jumper harness

 

[figgie]

wait wait wait.

Man you guys are sometimes amazing! Does anyone ever read?

Boosted 4 life.

The car runs but will not pass 1500-2000 rpm? hate to say this but that does not sound like a TCCS problem. What it sounds like is that it is missing a signal from one of the sensors issue.

The first order of business onn your part is to figure out EXACTLY why is the car not revving past the 1500-2000 point. It might be lack of AFM/MAF signal. If it is causing it now, if you reuse the harness you will have the issue happen again. To install a standalone you need to make 100% (not 99%) sure that the engine is in tip top shape. Once you know for a fact that the engine is ok. Then and only then should you pursue a standalone install.


The 2nd portion is that if you can not get the car running correctly with the OEM TCCS. What exactly makes you think that doing a standalone install and tuning it will be any easier?

-Figgie

 

[boosted4life]

wait wait wait.

Man you guys are sometimes amazing! Does anyone ever read?

Boosted 4 life.

The car runs but will not pass 1500-2000 rpm? hate to say this but that does not sound like a TCCS problem. What it sounds like is that it is missing a signal from one of the sensors issue.

The first order of business onn your part is to figure out EXACTLY why is the car not revving past the 1500-2000 point. It might be lack of AFM/MAF signal. If it is causing it now, if you reuse the harness you will have the issue happen again. To install a standalone you need to make 100% (not 99%) sure that the engine is in tip top shape. Once you know for a fact that the engine is ok. Then and only then should you pursue a standalone install.


The 2nd portion is that if you can not get the car running correctly with the OEM TCCS. What exactly makes you think that doing a standalone install and tuning it will be any easier?

-Figgie

Well I just bought the car and im not sure what it is. The guy I bought the car from told me its the ECU and he pulled it apart and showed me a little spot that looked kind of burnt by one of the caps. Where would I check to see if this AFM/MAF is plugged in? pics would help. thanks!

 

[tissimo]

wait wait wait.

Man you guys are sometimes amazing! Does anyone ever read?

Boosted 4 life.

The car runs but will not pass 1500-2000 rpm? hate to say this but that does not sound like a TCCS problem. What it sounds like is that it is missing a signal from one of the sensors issue.

The first order of business onn your part is to figure out EXACTLY why is the car not revving past the 1500-2000 point. It might be lack of AFM/MAF signal. If it is causing it now, if you reuse the harness you will have the issue happen again. To install a standalone you need to make 100% (not 99%) sure that the engine is in tip top shape. Once you know for a fact that the engine is ok. Then and only then should you pursue a standalone install.


The 2nd portion is that if you can not get the car running correctly with the OEM TCCS. What exactly makes you think that doing a standalone install and tuning it will be any easier?

-Figgie

I've seen a 1jz ecu fail like that. Will only rev to 2000 rpms, will not give any codes (solid CEL). Tried replaceing leaking caps etc, nothing fix it.

 

[figgie]

I've seen a 1jz ecu fail like that. Will only rev to 2000 rpms, will not give any codes (solid CEL). Tried replaceing leaking caps etc, nothing fix it.

Based on O-scope testing or just that information?

 

[sctwinturbo]

you can find the power fc new for under $1000.
the rx-7 store was selling them for $850. this past spring when my cousin bought one for $850. plus shipping
and yes there discontinued

the AEM eBay has them for $1700.
and drifthmotion.com has them for cheaper just call and find out

 

[boosted4life]

Based on O-scope testing or just that information?

so where should I check if you think it might not be the ecu?