I just read in the 4th gen forums that the 99 ecu cannot be upgraded?? Is that true? I know 99's could be modiffied, but i just need to make sure. I don't want to do cosmetics and building up $$$ for some minor to major performance upgrades. Will i be running into any problems?? I should have kept my 95

 

In regards to the 99 ecu, what is the highest rev limiter that we can get for it? and how much does that run for?

 

yeah you can.

 

lol, which question were you answering?

 

You can go as high as you want, JWT will just add on a disclaimer to your ECU reciept.

 

JWT can make a 95/96 work on a 99, although they say the 96s work better. I think they may charge a little extra, not sure. You could call them.

I don't think the stock ECU can read anything over 8000rpm. Many Nissan ECUs can't. JWT might be able to get it past that, but I would not be surprised if 8000 is the upper limit. EMU is more likely to be able to do it, but not confirmed either. You would need a lot of crazy mods to need to go above 8000.

 

It's not that the ECU can't "read" over 8000 RPM per se. It's that the stock ignition map stops around 82xx RPM.

 

so speaking of 99's and higher rev limiters, how much does an ECU that doesnt throw codes in a 99' and has a 7000+ RPM rev limiter go for?

 

I think I should add that an ECU for '99 doesn't have the same effect in terms of performance gains as it does to the rest. Besides why should you get your ECU reprogrammed/swapped when you can get e-Manage Ultimate and get more gains for the same price as well as more control.

 

Nobody knows that for sure since we only have one dyno to go by. Who's to say his stock ECU dyno wasn't skewed? Bottom-line conclusions should be based on an average of multiple dynos by a number of different cars.

 

but throw install difficulty in the mix and then think about it, no?

 

If you want to do it right, EU... If you want to play with a cookie cutter.. Get JWT.

 

Jim Wolf is ****...I've heard so many complaints about them, it's rediculous. Do it right and get an EU, and have a shop install and tune it for you. Definitely worth it in the long run.

 

That's what I was thinking.

Correct me if I am wrong, but doesn't the Emanage Ultimate make JWT and Technosquare obsolete? (at least for someone who doesn't need a cookie cutter)

 

ok, so if i get the greddy e-manage ultimate, it'll replace the stock unit(physicly) itself and doesn't matter then that it's a 99. The thing is, is that i wanted to do a 3.5 swap in my 95 auto, but got a 99 5spd instead of doing the auto to 5spd swap on the 95. I just want to make sure i can still do the swap and that's it

 

The EU is a piggyback, it gets tapped into the stock ECU wiring. The ECU stays in the stock location, and you wire/splice around 40 wires (if you want the full features).

 

is there a wiring diagram that comes with it or do you have to find the wires yourself with the FSM?

 

PLEASE search. There's tons and tons of info for the EU in both the boosted forum (2 particular threads) and a few in this one as well. But to answer your question, click.

I used this diagram and the EU booklets and got everything wired up.

 

cool cool.

 

Go to greddys site, and DL the PDF installation and wiring files... And read the holy ass cracker out of them... If you can't find greddy's site.. -------> best option

 

I was just wondering, in case I decide to purchase the EMU in the future.

 

JWT can only modify 95/96 ECUs. Since anyone using a JWT ECU in a 99 would most likely be using a 96 ECU I see no reason the gains should be any different from any other year. The emissions might be messed up, but JWT can also disable any ECU codes you ask them too.

A used JWT or TS ECU is still a good cookie cutter option. It is not as good as EMU, but it is still good enough for most. I would not put up with waiting too long for it though. I order my JWT, before EMU was a good option, about 1.5 years ago and I just got it in 2 weeks ago.

JWT ecus cost about $600, but it is not uncommon to wait at least 4-6 weeks. I think Cattman has the best price and can get them somewhat sooner. They used to go for more than that used. EMU is about that much too.