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It has been a long enough stay at the JWT hotel. I am dumping them and going CALUM! I don't know everything about the Calum ECU but I am going to figure it out. Calum's ECU will do everything for me. JWT couldn't make toast, but Calum promises to make me grilled cheese. MMMMMMM.
I called JWT and talked to Ben, and though I talked to an engineer about changing my program for free because of all the issues I have had, Ben said I still have to pay another 100 bones to add a rev limiter.
I want to run a rev limit right now for the reliability. I had my MSD box hooked up and the car wouldn't start. I have had to buy a new dizzy in order to get the car running agian. I plan on using the factory fuel cut on my VE-T to limit the revs it will be seeing daily.
So instead of paying $100 for a crappy program and a 7500rpm rev limit, I am buying a calum ECU for about $500 and getting all the adjustability I could want for what I plan on doing.
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99 SE-L. Graphite Gray GT3076R turbo, Protech Mani, 3" all the way! Nismo FPR 740cc, 255 pump, JWT computer,400whp pump is the goal.
I am about at the same point... Mainly just because i see how incredidbly HELPFUL calum tries to be with his stuff. MANY post of him telling someone to call him so he can help him figure it out.... my JWT may be up for sell in the future... who knows....
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Chris Gault
1995 B14 Turbo 200sx SE-R
"You might think your hot sh*t in a champaign glass, when your really just cold diarrhea in a Dixie cup...."
The program is way to conservative for my setup, I hit 15 degrees of timing on my map as soon as I go 1psi of boost. I am running 11psi on a gt3076r and should be well over 300whp. The air fuel after leaning out is still 10.8:1 and the timing map sucks. I would need to run 20psi to take advantage of 15degrees of timing and I think that 18psi is about the limit for pump gas.
the tune is good enough to get the car running, but too conservative to make any real power with. I have had problems since day one with the car fouling plugs because it runs so rich, so I talked to an engineer. He said he could reprogram it for me for a 300zx maf instead of the lightning and help with the issues for free. They would send me a new chip for $100 and I would send my old one back and they would refund my money. But when I called them to do it a couple weeks later they refused. I spent $500 on a computer upgrade, $200 for a 97 ser computer, and $400 in reprograms. I am not going to just keep paying them when I can go Calum now and make my own program.
I plan on going calum and not having to worry about paying more money to remove the rev limiter in the future. The computer got the car running, but I really need to start making some power and the jwt computer just won't cut it.
Well if you are wanting to make power its time for you to give up on all ECU crap >>>JMO standalone as for fouling plugs have you tried lowering the fuel pressure?? I think there might be a bit more to it I mean we all know that they are conservative but come on how many ECU's have they done now Why is yours so much worse then everyone else?
Most of you guys are running Sr20dets (or + t's) though. Coheed is running a FULLY BUILT SR20VE+T with a whole boatload of other goodies. He's basically a pioneer and doing sh*t that hasn't been done with this motor yet. JWT didn't even HAVE a program for him, they had to MAKE one. He's seriously had nothing but problems with them.
Don't doubt Coheed, he is an incredibly smart guy. He knows things that would make Andreas say "No sh*t? How do you know this stuff?"
Also, we already tried bumping his fuel pressure down to the minimum. No dice.
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1998 200SX SE-R No Slow, 2 Point-Oh!
and what is mimimum to you ? I have a 420a fully built turbo with stock ECU running 20 base ( yeah it is temp ) waiting for money to get a AEM but hey it works.
I am glad you stick up for him But Come on If thats the case why would you spend the money then ***Hey I can use a stock ECU with a retune they have never done a tune for my setup but????*** It called R&D If it has not been tested, it take time and money to get it right. You are asking for a custom tune from someone that is hundred of miles away. I hope Cohead knows that with a Calum he is going to need to tune and tune again and for what he is aming for Dyno time. I never doubted Coheed just Doubted the choice from the begining and Didn't like how he was putting someone down that has done so much for all of us as for aftermarket support. When there is much more problems then just the JWT Ask any tunner and they will tell you the tune can never be right tell all the bugs are worked out with the car first.
This post was started to bag on JWT and I see no reason that should be happening.
not totaly true. With my engine, intake only. we made probably 45mins of pulls...we usualy buy dyno time by the hour as its cheaper than the 3 pulls for 75. In an hour we can get a whole but load of pulls. So in that hour. we started tweaking, within say 4 pulls we had it nearly nailed. everything after that was losses or no gain. So when it was said and done, it was like 125-150 for the dyno time. That same rom has been in the NX now for 2 years almost, since the first board he did is in the car still. Its done maybe 20-30k miles getting 32mpg.
now for what Cohead is doing, he pretty much knows hes going to have to spend some time on the dyno. Even with a fully prep'd ITA car we did what we needed in 3 hours to get the car to make good power and reliable for many many races. So what hes going to have to do is do some good guesses to what hes going to need to be safe at full throttle. then do the minor tweaking. get fuel ratios where you want them, then you start playing with timing and bounce back and forth, easy enough in emulation mode. The off full throttle stuff is about as easy *** a little more...just the same as if you were doing it in a full standalone.
right now for options....calumsult is about the best part way solution. need more than stock but dont want standalone and do want to tune, calum. dont want to tune, JWT. The main thing I see as an advantage with the standalones is the better software and more people doing it. the software we have to use is a bit backwards at times, but once you get your head around it, its not too bad.
you are right on the get the car mechanicly sound first...so many times ive seen that happen where people show up with cars that have slipping clutches...overheating....all sorts. but after that.... you can go.
standalone gives you lots of options at a price. calumsult gives you 90% of what the standalone does, and uses stock harness. JWT gives you reliable plug and play power. The cost of the JWT isnt just a money factor, its also time. If you change your setup more a few times...more than once in a year...and you are looking at a long wait just to drive your car sometimes. But, you do gain that r&d they did in making safe reliable power. It may not be ultimate power, but it is safe power.
This thread is not here to bash JWT. I have done business with them for years. They write very good programs for DE and DET. I have just found that the timing maps for the VE stuff are way too conservative (prob someone experiencing detonation at one point so they lowered it).
Fuel pressure is at the min for a quality idle about 38psi. Any lower than this and the car will not like to run.
I already had the JWT ecu so I wanted to see what I could do with it. JWT said they could get a program for me so I went that route, just to get the car running. The car maybe pushing 400-500 whp down the road, but it also needs to be street legal and pass smog. So a standalone is out.
JWT programs have worked on thousands of cars pushing tons of boost on pump gas, but my programs timing curve is setup for a lot more boost than what I am running. I would like to modify the timing curve based on the boost I am seeing, not the boost I will be adding.
So again, JWT is not the bad guy here. I am just tired of spending so much money for a computer reprogram, especially after so many previous reprograms. I just need something better, something adjustable, and something that will pass an OBD2 test over here.
On another note, I did run 20psi once by accident and I broke my tires loose in 4th gear on a roll, so the power potential is there. I just wanna see a reasonable amount of power with the .8 bar I am running now. So I am shooting for the 330whp range.
This is not meant in any way to bash JWT but every car is different if you think about it. Yes, JWT makes a great base program to get your car going but thats it. There is no adjustability with a JWT ecu only a program that is set. There are many other units out there that give you more adjustability. Even a piggy back unit such as the e-manage is very simple to use your self and still offers far more adjustability than the JWT units. Now the JWT unit is fine for someone that just wants a reliable daily driver but for someone looking to make some power I would suggest a different route.
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95' 200sx Daily Driver-For Sale
93' Sentra Se-r-Project
yes you can add a safc. But I would like to control the whole ingnition map and see what the computer is doing. I am going to try to stay as simple as possible.
I have never had one problem with a JWT ECU. They work great.
Calum ECU is cheaper and will do the same job. His Realtime is out of control for price and features.
I have had many customer cars run and make outragous hp on a JWT ECU for example, I have a friends car making 360 WHP and 330 FT LB torque on a DET at 17lbs boost with S4 cams, DP turbo, 740cc injs 300zx MAF. The car runs 11.8 at 122 MPH.
I can admit only one smalll problem with the JWT ECU with the VE motor that the timing is a little conservative below 3000 RPMs.
Most people that have problems with JWT ECU is the lack of mechanical skills. Alot of do it yourselfers that blame their problems on someone else.
When it works great it is them and when it works bad it is someone else.
If you sent me the Dist or bought it from me I could have set it up for the MSD.
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If you need any help with your car and you cant solve the problem, call me at 305-282-3643
Overcome With Love And Life, With Truth and Right, So Seek Happiness Before Vengence
you can also add an emanage to a JWT but... what's the point. I thank any company or person that offers quality equipment for our cars. Everyone has there preferance on what they want to use for what they are trying to achieve. I like to tinker with my programs and I love to change parts... for that and other reasons I stopped using JWT and went to emanage...that was years ago. Then Calum came along. I can understand why you want to use something other than the JWT but, your title seems like you are bashing JWT although you say you are not. We need all the support and option we have and hopefully add more.
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06 Frontier - tow truck
92 Sentra se-r - project N20 ---- last in line
95 200sx se-r - the low budget booster... Running
92 Sentra se-r - no autoX... just boosting this one too
low post count=working on cars more than computers
SR20deep Ct.
Coheed looking into the Nistune program. It will work with Calums ecu and your wideband. It shows the map trace and gives you the A/F ratio from your wideband into the program into the map cells. The guy who wrote the program is super helpful too if you have any problems with it. Since it's not the Nistune board you can't do a live update for every change. you have to make the changes then save the map for the changes to take effect.
yes you can add a safc. But I would like to control the whole ingnition map and see what the computer is doing. I am going to try to stay as simple as possible.
why not get the FIC then, its a fuel/ignition controller. The article i read about it in Import Tuner, makes me want to get one.
because a stock nissan ecu will fight you. since its a MAF system and is self learning, as you make changes the ecu will start to fight you to get control back. you can with a calumsult go in and turn that off...may can ask JWT to do it too im not sure. but whats the point. as we used to call them back in the old days, dial a boom's. if you want to "tune" your car...dont do it with a bandaid do it the right way by changing the maps be it with a jwt, calumsult, or standalone.
