JWT ECU vs. 4.08

[elwesso]

This is price included...

We can get JWT equivalent ECUs for $200 from AAACOMP... The rear diff is like $800.....

I think I remember it was a wash between the 2 but I dont recall.....

So what do you think???

[HeavyDuty]

We can get JWT equivalent ECUs for $200 from AAACOMP... The rear diff is like $800.....

I think I remember it was a wash between the 2 but I dont recall.....

So what do you think???

I don't want to come across the wrong way, but how are you able to make the declaration that JWT ECU's are the same as anyone else's? No offense intended to the guy at AAAComp, but I deal with the "just the same" stuff everyday & it rarely is. JWT ECU's are $500 without a n2o module.

I don't know if I understand the comment of it being a wash. The ECU improves power all across the band, and the gears should serve to amplify that. I'm not too concerned about the additional shift, as I plan on being well into 3rd gear on the bottle. Add a nice torque converter & high 12's *might* be attainable. 12.9999 & I'll be happy.

[AZhitman]

Wes - AAAcomp isn't doing ECU burns for 94+ Q's anyway.

I have recently ordered the JWT ECU, and my 4.08 should be here in a week or so, so I'll report back.

Keep an eye out for an ECU core and a rearend core, as this will expedite your quest.

[elwesso]

Thats interesting that 'comp isnt doing those.... I was always recommended to him.....

When you get a JWT ECU, you get a whole new ECU correct?? You dont send them your core, and they send it back?

Its a shame JWT customer support sucks...

[rsiwicki]

sorry for extending the subject about who ECU's are better....but does anyone know if the JWT ECU is better than the Stillen ECU?

I went with Stillen because of the core exchange program and did not want to risk having my car down for more than a week as it is my daily driver and I could not find an extra ECU at a reasonable cost. I am actually waiting right now for my ECU from Stillen, funny thing is that they did not have a core ECU available for me so they are getting a core and will be sending the new ECU to me in a couple weeks.

thanks....

[elwesso]

RSI- be sure to fill me on the before/after experience...

[HeavyDuty]

Do these numbers, seem somewhat on par? 90-93 Q

JWT ECU/TCU Level ten transmission Low 14x 1/4 mile, with high 90s trap speed

dkill, the trans alone likely won't improve times. It should, however, be able to withstand more abuse, like the Blue Plate clutches & kevlar bands installed in my trans, along with the valve body mods. *If* it has a nice stall converter, it *will* improve times, but be advised they have several different levels of service. AGM has a billet converter, not a standard option, I'm sure.

When you get a JWT ECU, you get a whole new ECU correct?? You dont send them your core, and they send it back?

Its a shame JWT customer support sucks...

Yes, you send them *a* core & they send you back your same box. However, the JWT setup is *not* a reflash, but rather a new daughter board that accepts eproms for different upgrades.

For instance, you have Sentra and a JWT base program with n2o module then later you decide to upgrade to a GTIR with 444cc injectors instead of 370cc but also want to keep your n20 module with a 50 shot instead of 100, and reprogram for the different injectors. That upgrade only costs you $100. Later you go with 720cc inj & a 100 shot, no problem, $100 upgrade.

Their support doesn't suck, it's just that everyone in the world recognizes they are the North American Nissan (perhaps worldwide) authority and therefore they are constantly backed up.

Now for real-time customer service sucking, see Stillen. Stillen doesn't make many things they claim they do, it's possible the Stillen ECU is a JWT anyway. The Stillen intakes used to be JWT POPs.

[rsiwicki]

thanks guys for responding about the ECU of JWT vs. Stillen's

I am still getting all the stuff done to my car, just taking longer than I thought. My parts that I am buying are growing exponentially....When I am done with the mechanics, there will be nothing to worry about....Just ask Joe, I think I made his 1st qtr sales, but he gave me such good deals compared to my local infiniti dealer. Goodnews is that my local dealer will install any parts as long as they are OEM's or come from another Infiniti shop. I will start all the mechanical stuff in two weeks after I et more things from Joe in the mail this week

dkill, I was reading all the old supercharging posts and I am very interested, but first things first with getting all the basics done and then getting the car repainted....yes repainted. I have a door dented from parking lot....key mark on rear qtr panel, and now this weekend the valet clipped the front drivers side bumper with one of the posts in the garage...I now have nice orange paint on the front corner with the bumber all scrapped up. At least I will get a couple $100 from them to go towards the new paint job in May or June as I travel on business to south america and want the car painted while I am gone.....the level ten transmission is sounding better and better...my rebuilt transmission is just plain to tempermental at times

if it was not for you all being so supportive and cool, my car would have seen the trade-in lot about a month ago. I am so happy to keep it and put a good couple grand into it and still not have a car payment and soon to be driving a car that will certainly be able to keep up with a few of these Miami tire burners around here...

[HeavyDuty]

Heavy, According to their website, unless I'm reading it wrong, the PTS billet torque convertor, is part of the complete rebuild costing (3.500) or so...

Like I mentioned, I could be wrong, if the built PTS includes a billet converter, then, cool. I just looked all over that site & found no complete built trans with billet converter for $3500. The last L10 trans I received from Sam was with a reworked stock converter and it was $3500. If I read it correctly, the difference between their standard converter & the billet one was $700-$800. Maybe I missed something.

The torque multiplication and therefore performance gains would mostly come from the converter. As Q45Tech mentioned, the shifting is the responsibility of the TCU. The it's up to the trans to exectute the order.

[maxnix]

The TCU controls the shift sequence, including timing retardation. It is set for comfort and durability, not quarter mile strip performance with frequent rebuilds.

[HeavyDuty]

The trans won't shift quicker. With a reworked valve body, firmer. With better clutches, etc., more able to withstand higher power levels & stay together longer. The TCU is what retards the timing & adds time lagging, transmission saving comfort to the shifts.

[QShip]

AAAcomp has JWT and Gforce coded ecu's. He also has some very interesting code he's working on that can have the VVT kick in earlier or later in the rpm band.

He also has jwt coded tcu's.

[Jeff Williams]

AAAcomp has JWT and Gforce coded ecu's. He also has some very interesting code he's working on that can have the VVT kick in earlier or later in the rpm band.

He also has jwt coded tcu's.

Does he have the '94 ECU or TCU, yet. The last time I talked to him, it was about a year ago, and he only had the '93.

I guess I will have to wait, on AZ, to do a test, before I see what the performance improvement is on the ECU.

I'll state it again, I would like a TCU upgrade, but want a normal/performance switch. I don't want my neck snapped, on a 1-2 shift, while driving to lunch with customers in the car.

[elwesso]

Ill be waiting on AAACOMP to do the 94s.

What would be the difference. the 93 is basically the same, 1st gear start, why wouldnt I be able to use the 93 code in the 94, as there is only a small section that is changed (according to Q45tech)

[Jeff Williams]

Ill be waiting on AAACOMP to do the 94s.

What would be the difference. the 93 is basically the same, 1st gear start, why wouldnt I be able to use the 93 code in the 94, as there is only a small section that is changed (according to Q45tech)

That is a very good question. I have been wondering that, myself.

[Q45tech]

Please understand that once the VVT is disengaged after passing 4600 rpm in 1st gear that it stay disengaged during the WOT shifts because the rpms never drop below 4000 rpms.......until you let off throttle and rpms drop it is always in the low overlap [high rpm and idle mode].

So fiddling with the VVT oil pressure cut rpm time doesn't do much other than sound good as far as a quarter mile or zero to 50 or any downshift acceleration.

The VVT is for idle smoothness and the acceleration in 1st gear and fuel economy in the 1500-2500 range.A few hundred rpm earlier won't be measureable as takes <1.0 second from 4000 - 5,000 rpm in 1st gear WOT..........moving the torque peak won't make much difference..........unless you are measuring in hundreths of a second.

Remember it takes an extra 80-100 horsepower to drop the quarter mile time 1.0 seconds due to 4300 pound loaded weight of Q.

[PalmerWMD]

So mid 14's with JWT and 4.08 (=15% effective torque incease) should be realistic for mid 14's in an early Q?

Fred..

[PalmerWMD]

NO2 mid-high 12's possible but need a large shot.

I'd use a light shot or better the SC.

Fred...

[AGM]

JWT info,

All JWT ecu's are reworked and need a core exchange, except for the trimode, which JWT build from scratch. Stillen only 'onsell' JWT equipment. If you are looking to get a Trimode ecu, check if Stillen has it in stock as you will get it straight away, rather than waiting for JWT to build it. For anything other than timode (only if Stillen has it in stock) go staight to JWT.

LEVEL 10 info,

$3500 gets you a transmission rebuild only, with an adjusted stall speed on your OEM Torque Converter. You need to pay extra for the billet Torque converter. Level 10 makes there own Torque Converters. Aparently the shop is next door.

The level 10 software can only be used for manual shifting of the transmission.

The best person to speak to at level 10 for the Q45 stuff is Sam Ismail.

Regards

AGM

[elwesso]

AGM.. Do you know if the 93 program will work in the 94+ ECU?

EDIT: Even if they are different, it shouldnt be too hard to change it around, right/??

[knghtryde]

I'm getting my hands on a 90 Q45 motor. I'm thinking of dropping the compression to 9:1, and then throwing on a Twin Turbo Setup onto it. I've built custom manifolds for the KA so I do have all the equipment at home to make the manifolds...

I'm thinking of just using the Stock Style Turbo's from a TT Z32 rebuilt by turbonetics...

I just want to know what everyone thinks about a TT kit for the Q45 or should I not even try.

[elwesso]

I think that would be golden......

[maxnix]

Oh, please try. Might want to devise a piston cooler for the new pistons and an external oil cooler. Of all the purported forced inductions on a VH45DE, no one has used lower compression forged pistons, as far as I can recall.

Might want to peruse the supercharger group buy thread and posts by AGM.

[Jeff Williams]

I would like to see it done. It appears there is a lot more room in the nose of a Q45, than there is in a 300ZX.

I would think the cost would much less, and the work would be much less, for a paxton type supercharger, though.

I know there was a thread, where a guy did twin turbos on a LS400, and mounted them under the car, near the cats, and ran the intake pipe up over the wheel.

I drive my car every day, but am considering a second Q, for work, and make this one for fun. Then I would be more serious about investing some monies and time into forced induction.

[AGM]

dkill,

I will never know how the level 10/PI Torque Converters compare, as I will have no experiance with PI. I will only be able to comment soon on the Level 10. No 1/4 mile times till the car is back on the road.

Elwesso,

I assume that a 1993 TCU will work with a 1994 ECU as my JWT Trimode operates well in my 1994 vehicle.

Lower Compression,

I am up for more boost if there are some lower compression pistons out there. Just have not been able to find any without once again going with a custom order. Was leaving it for my next engine, once I finish this one. I have a spare one I can work on without taking my car off the road other than to swap engines.

Regards

AGM

[elwesso]

AGM. I was wondering if the JWT program for the 93 ECU would work for the 94 ECU

[knghtryde]

You know what... I think I'll rebuild the motor stock... then figure out a way to develope a TT kit for it for resale... Using a good cooling as a Co2 inline after the intercooler or something... I think I can accomplish using a T28 Ball Bearing Turbo at around 7 psi... with proper cooling...

[AGM]

Elwesso,

I spoke to JWT at lenght about this and they did not have seperate Trimodes for the first and second generation Q's, just one for all years 1990-1996. One size fits all!

I have replied on the level 10 group buy thread to your questions.

Regards

AGM

[elwesso]

So basically what your saying is, I send my ECU to AAACOMP, and he can use this "unversal" program for my ECU (JWT equivalent) and it will be just like the genuine JWT or stillen units????

[elwesso]

Remember Im talking ECU not TCU