I now have both of these ECU's for my 96SE 5-speed...which one to use/which one to sell?? I could just plug each one in and play "seat of pants" evaluation, but I don't think one will be any "feel" difference than the other. Please, correct me if you have actually experienced significant difference between the two on the same car!! Does anybody have any real hard data differences on the re-programs that each of these two ECU's actually are set for? For example: does one use a more aggressive timing advance, different fuel map, power curve configurations, etc. Or are they basically the same re-program? The obvious advantage to the JWT unit is the extended 7.2K RPM; it is my understanding that the TS will go to about 6800 with my 5speed SE package. Again, please correct me if I am misinformed! I'd just like to use the one that best suits my application since I'm not looking to race the car, drive mostly in mid-ranges, use 89 octane(spare me the "flames', please ) and won't mod it further (only install my MEVI unit someday )...even then the car will rarely/if ever see 7K. I appreciate any hard data input that anyone might have!! Thank You, Doug

 

From what I've heard the JWT is good especially if used in combination with the MEVI, so I would assume it depends on what you want to do in the future. If you wanna sell the JWT though, lemme know.

 

Coupled with any sort of VI, the JWT is the easiest, not the cheapest, thing to get.

 

You've already answered your own question. JWT 72k rpm, TS 68krpm.
JWT Mevi Program, TS none.

I have the JWT with 72k, ttz maf, fuel pump, 555cc and MEVI program with a custom turbo for 2 years now. Great idle a/f @ idle 14.7.

So if there is any doubt, JWT all the way.

 

Duh, its in closed loop..... its always going to be stoich when warm, under 3k, and 40% throttle.

 

The TS will not go to 6800 RPM in a normal situation. (i.e shifting correctly and not from 5th to 1st ) Show me an OBD II scan or dyno data that proves this.

 

Try them both (one at a time). If you can't tell any difference and are indifferent about which you keep, put them both up for bid and sell the one that gets the highest bid. Sounds like a plan???

 

I really don't know whether this JWT had any MEVI programming(I didn't even know ther was such a thing!). But consensus says: keep the JWT!
I guess I was given the wrong info on the TS which said it would pull all the way to stock RPM(6.8K with manual SE??) and higher with Harlan type extender. Really just wondered most about advance curves, fuel maps differences (if any significant) between the two. Great input from y'all. I appreciate it!! Doug

 

btw which ever you keep you should probably use 91 octane or higher with both ecu's due to the advanced timing and a/f ratio's or your looking for trouble (detonation).

 

They say that they can 'program' it for the MEVI. I was told by good 'ol Ben that they can program the MEVI opening point and have it integrated, so there would be no need for an RPM switch. But they wanted 700 for it so I at them.

I would, since you already have it.

All 4th gen Maximas whether SE/GLE/GXE/, MT, AT have the same rev limiter, 6500 not 6800.

.The Harlan is not an extender, it's an RPM switch which informs the solenoid to actuate the VI actuator, but it does nothing for rev limit.

 

If I aint mistaken the TS was offering a 72k limiter at one time, but I dont even think they make ecus 4 4th gens anymore

 

There was a post a while ago comparing the dyno maps on both. The TS was a bit more agressive and the curves were slightly different under similar N/A USIM. But overall it was only a couple hp/tq either way.

 

they did offer the higher rev-limiter and no they don't make us ecu's anymore. I did talk to a sales guy who said they still could play with some of the ecu's they did. Like right now I m trying to get the 7200 rev limiter added to mine.

 

That's the spirit... Light a fire under their ...

 

I have a better idea ... SELL THEM BOTH and buy e-Manage Ultimate+WB02. More gains everywhere.

 

I agree with you! However, I am 52 years old and "plug and play" increase (even nominal) gets me grinnin' . Who says you have to (fully)grow up just to grow old? hee, hee. If I were younger and really serious about maximum HP potential I would definitely consider e-Manage manipulations!! Thanks for all the great input, y'all. Seems like the real difference for my application will be the extended RPM's(which I probably will never fully utilize)... Just one last request for actual timing program and fuel map differences to give me some idea for (mostly) normal driving on 89 octane
(no need [yet] for 91!). The car runs great on 87 but I just switched to 89 as prices dropped;the car runs beautifully and gets identical MPG with both, but 89 is a choice with either ECU with potential to up it to 91 (IF) I experience any octane/detonation problems caused by reprogrammed timing and fuel maps. Thanks to all!!! Doug

 

I'll go out on a limb and say TS could reflash to anything JWT could do. TS might not be able to add hardware to activate a MEVI but if you set the mevi to xxxx rpm and run a dyno, TS could reflash to accomodate for the extra airflow