I've been debating on my next mod and decided to go with JWT. I have the money for the ECU upgrade and I know the gains are 15-20hp respectively. I just would like to get info on installation process, cost, or any other requirements needed for the mod. Please also let me get your opinion on the mod, ie. is it worth it?, etc. Thank you for your help and I can't wait for the extra power ...

 

25-20 seems optimistic. More like 8-12peak, but may produce more over stock in a very useable region of the power band. Install is easy, just a little tight. It's worth it of you have some sort of VI, depending on what "worth it" means to you, because this is one of the more pricey mods out there. Process, well it varies but shouldn't take more than 60-65 days for them to do it. If you're auto I can sell you my core.

 

Looking back I probably would not do it over again...mostly because I dont have a functioning VI at this point and dont really remember what it was like to have the ecu and VI working in harmony....on the plus side I now get 25mpg which never happened before.

 

You have an auto so I'd suggest getting the raised rev limiter, just in case, from technosquare, not JWT. 20hp gains, maybe at the crank.

 

Installation is very straightforward but can be difficult because of the angle and tight space of where the ECU is located. TechnoSquare will be a better value but many on here like JWT. There are really no requirements other than a second ECU so your car will still be running while JWT os TS do the upgrade. It's really just plug and play.

 

In the mid to upper rpm ranges, there looks to be a 20lb-ft torque gain, and about a 15hp gain. This is a dyno for the TS ECU.

http://forums.maxima.org/showpost.ph...2&postcount=25

 

Is that a dyno from your car? If not what year is it and what mods does it have?

 

What's the price difference now? (TS Vs JWT) with the automatic tranny rev limiter included with the TS? If i'm not mistaken, they're the same price with all options etc ..(rev limit incr)...

 

No that isn't from my car. However it doesn't look like a stock dyno. My guess would be a y-pipe and intake of some sort.

 

98 with y-pipe, b-pipe, test-pipe and Stillen cone.

 

Does that have your "highly advanced" timing on it instead of the "normal" TS data?

 

Yes it does.

It will be for sale soon if anybody is interested. I have not experienced any knocking/pinging with it but I wouldn't recommend it for use in hot climates where 91 is the highest available octane.

 

Kinda ruled me out on that one ...

 

Sorry, nube question. What is a VI?

 

variable intake manifold.

 

Is a Cold Air Intake a variable intake manifold? Or is VI a mod not available on 3rd gens?

 

jwt ecu is definitely worth it. even if you don't run VI, this is still a good gain mod you'll get. with that upped rev limiter, you'll love to see what it can do on the streets. i whipped lots of ricers with mine. and i'll not sell it off for money.

 

Alright, now when you raise your limiter,, CAN our engine handle it/ How much can it handle? or do we need to have "stuff" balanced in the engine or upgraded? What's cost difference between JWT and TS? Anybody have a URL to their site?(TS)

 

Do ECUs affect the mpg?

 

.

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Tools needed: small socket like screwdriver about 4-5" long that uses small <1" bits for screw points, 10mm deepsocket.

1 Then remove the plastic on both sides behind the stereo. On the passenger side, unbolt the wiring harness, pull it out of the way.
2 There are 4 screws (phillips) 2 on rear, 2 on front 1 at each corner. You have to feel for them. then slide the screwdriver in and ratchet it to loosen the screws out.
3 Then the unit just slides out. REMEMBER THE ORIENTATION OF THE ECU AND WHICH DIRECTION IT FACES.. (Lettering up)

4 Then using the 10mm socket driver, remove the harness from the ECU. This is a long screw, so it might take some time.
5. Once the bolt is all the way out, gently pry the connector FROM the ecu... and then you can swap ECUs.

©2001 Cheston Chiu.

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i just got finished swapping my ts upgraded ecu in and pulling the stock 97 ecu out, for the longest time, i just left the stock one in and would just plug in the TS ecu and leave it on the floorboard.

I knew I would need some sort of 90 degree screwdriver or some sort of ratchet bit set to get in the super tight areas to unscrew those 4 screws. Ha, I had no idea the battle ahead for me ! Being 6 foot 4 inches tall and 225 pounds it was a mess, I ended up sitting upside down on the passengers seat and floorboard for the wrestling match. I went after the first screw that was visible and had a difficult time. Finally with alot of work I got the screw out. I was also pretty discouraged at this point. Then I moved to the back screw and ended up breaking my cheap, useless, why i waste my money on chinaman tools, ratchet ? Guess I will learn one day, but hey I know to keep the receipt,lol !

So, what I did was I just removed the the whole bracket. Which you sneak a 10mm socket up in the front of the ecu and baby step it out because the area is super tight. Once I got those two out, go around to the passenger side, jump down in there and look along the top of the ecu, a bunch of wires go across and are attached to the ecu, just smash or cut those things a bit and force them out. then you just wiggle the whole bracket out.

Who knows this could be the hard way, but I was determined to remove the ecu and any cost once the battle started !

Ceasar: 1
Ecu: 0

 

...ghey...

 

Answered your question though ...

 

Is it still true that the raised rev limit from TS is still only for automatics?

 

Yes .... .

 

that's messed up.

 

So do you take it all the way to the raised rev limiter without the VI???
Im assuming you have the 7000rpm limiter.
If so, Why?


In all, the ECU upgrade is one of the best mods out there next to the Y pipe.
The Y pipe is a bit greater just because of its price compared to the ECU.
Now, if you dont know which one to go with, its easy.
1. Do you plan on using a VI of some sort?
If yes, then get the JWT.
If no, get the Technosqaure.
2. Do you plan on running Boost or NOS?
If yes, go with JWT, they have programs for that setup.
If no, get the Technosqaure.
3. Do you need the ecu back within a couple of days, or can you wait 2-3 mo.?
If you cannot wait, get the Technosquare.
Ive had both, and they are relatively the same as far as performance goes, the JWT was better in my situation due to me having the MEVI.

 

I had the JWT on a 3.12" pulley and went from 276whp (with Cartech FMU) to 286HP (with ECU). The raised rev limiter is nice but really the only reason I got it was to balance out the combo of the VI and S/C. Would I do it again? Probably not cuz the numbers weren't worth the money. I've since sold the S/C & ECU and am going to N2O with future plans of +Turbo. Personally, I don't think the JWT ECU is worth the 'bang for the buck'.

Just my $.02

 

flavor, check out cyu1's sig, he has the mevi. If youre not going to get the rev limiter, use TS. If you were auto, id say get the rev limiter so in case you wanted to ever add on the VI, you wont have any downtime waiting for them to reprogram your ecu again. Im auto, so ill be going to TS

 

My fault.
Makes sense. Im just so used to seeing people get the raised rev limiter and redlining it with no VI.

 

I phreakin love my JWT ECU. Best mod ive ever done. Its a total icing on the cake for USIM and/or a total mevi-enabler.

It rocks with US intake manifold.
The mid-range torque becomes noticably propped up. And that was great for a year or two but...
Now that I have the MEVI-
It still rocks, even more!

The VQ is shweet at 7000 RPppMs - "...like wiping your @ss with silk, I love it..."

 

uhhhhh... k Maybe I should take a second look at the TQ differences. I paid more attention to HP differences which were negligible.

 

The JWT ECU for a boosted car is something totally different. I would actually have expected you to loose a bit of power going to the JWT ECU from stock timing and a FMU. In the case of a boosted maxima the purpose of a JWT is really to control larger injectors, a Z32 MAF, and retard the timing a bit to run larger amouts of boost safely. A JWT ECU boosted program in itself is not what makes power, it is that it allows you to make more power safer.

 

Heres a dyno comparison..



Above :
Run 004- Stillen Muffler, Stillen B-pipe, Custom (Ghetto) CAI, Stillen Y-pipe
Run 008- Above with Custom midpipe, UDP, Hi flow Cat
(bummer that the stupid dyno was "spotty"

Below: After JWT ECU
Take a look at the air/fuel difference. Nice..




Also, just for kicks, heres my first dyno- before and after the stillen Y pipe.



Run 1: Stillen Muffler, Stillen B-pipe, Custom (Ghetto) CAI baseline
Run
Run 4: Above + Stillen Y pipe