Just so everyone knows who has questions as I did.

To Use JWT 4bar ECU

Reprogram : 100
Aditional Circuit :125
Fuel pressure regulator : 99-200

for 3 bar
just the reprogram : 100

You will also need 50 or 72 lb injectors & cobra maf
for either.

I will be using the 3 bar program with 370cc injectors. You can also use the 4 bar program with the 370cc injectors. Oh, and stock MAF for both, though the stock MAF will limit you on your hp.

I didn't realize with the 4 bar program, yo would have to get a regulator and additional circuit. That is interesting. I am glad I am sticking to my simple 3 bar program.

Thats the main reason I wanted to post this

so people know what is involved with the 4 bar

Excuse my stupidity, but what are these programs and what exactly do they do?

If someone wants "the Bluebird T25 program for 370cc injectors" then what are they getting? Is that an X bar program?

I'm drunk at my work x-mas party so hear goes.

3 bar program the fuel maping is programed up to 3 bar of fuel pressure

4 bar is up to 4 bar of fuel pressure

The 4 bar is set up to a specific of 58 psi fuel presure

Well the statement up top is not quiet true. You can get a 370cc inj program for 4 bar and the cost is still the same as a regular comp. 370cc inj at 4 bar gives you about 285 HP and if you bore out the MAF to 54mm you can get a readable 280hp from the MAF.
If you had a GTIR MAF it reads up to 280 HP and if you bore it out it will have a readable limit of 305 HP.

Also for all the people who have bought Cobra MAFs the reason you have to pay xtra is because they have to add a Subtracter program to the ECU for the MAF to read above the 360 HP limit. If you had a 300zx MAF you would not have to pay for the subtracter program because the 300zx MAF can read 550 HP before it gets to its readable limit. The reason they do not tell you guys these things is because JWT wants to get rich off of everyones stupidity. If you were to use say a Q45 MAF it can read up to 700 HP before having to pay xtra for any silly subtracter program. So lets som it up.

370cc inj 3 bar comp GTIR or SE-R MAF $550-$600
370cc inj 4 bar comp GTIR or SE-R MAF bored 54mm $550-$600

50lb inj 3 bar comp Cobra MAF $550-$600
50lb inj 4 bar comp Cobra MAF $850-$900
72lb inj 3 bar comp Cobra MAF $850-$900
72lb inj 4 bar comp Cobra MAF $850-$900

50lb inj 3 bar or 4 bar 300ZX MAF $550-$600
72lb inj 3 bar or 4 bar 300ZX MAF $550-$600

50 lb inj 3bar or 4 bar Q45 MAF $550-$600
72lb inj 3 bar or 4 bar Q45 MAF $550-$600

NOW YOU KNOW AND IF YOU DONT KNOW YOU BETTER ASK SOMEBODY!!!

Andreas Miko

Excellent info! So do I have to have a JWT ECU at all to use a 300ZX or a Q45 MAF? I know for other injectors and the fuel maps are necessary for turbo, but if I put a 300ZX or Q45 MAF on say my NA car, would it simply work? Is that kinda what you are saying Andreas?

btw, where in the heck did you learn all this stuff!?!?!!?? :)

Andreas, I have a quick question. What is the difference in getting a 3 bar or 4 bar ECU program, or getting a FPR and Keeping it set at 58 psi or 44 PSI?

Originally posted by Andreas Miko
Well the statement up top is not quiet true. You can get a 370cc inj program for 4 bar and the cost is still the same as a regular comp. 370cc inj at 4 bar gives you about 285 HP and if you bore out the MAF to 54mm you can get a readable 280hp from the MAF.
If you had a GTIR MAF it reads up to 280 HP and if you bore it out it will have a readable limit of 305 HP.

Also for all the people who have bought Cobra MAFs the reason you have to pay xtra is because they have to add a Subtracter program to the ECU for the MAF to read above the 360 HP limit. If you had a 300zx MAF you would not have to pay for the subtracter program because the 300zx MAF can read 550 HP before it gets to its readable limit. The reason they do not tell you guys these things is because JWT wants to get rich off of everyones stupidity. If you were to use say a Q45 MAF it can read up to 700 HP before having to pay xtra for any silly subtracter program. So lets som it up.

370cc inj 3 bar comp GTIR or SE-R MAF $550-$600
370cc inj 4 bar comp GTIR or SE-R MAF bored 54mm $550-$600

50lb inj 3 bar comp Cobra MAF $550-$600
50lb inj 4 bar comp Cobra MAF $850-$900
72lb inj 3 bar comp Cobra MAF $850-$900
72lb inj 4 bar comp Cobra MAF $850-$900

50lb inj 3 bar or 4 bar 300ZX MAF $550-$600
72lb inj 3 bar or 4 bar 300ZX MAF $550-$600

50 lb inj 3bar or 4 bar Q45 MAF $550-$600
72lb inj 3 bar or 4 bar Q45 MAF $550-$600

NOW YOU KNOW AND IF YOU DONT KNOW YOU BETTER ASK SOMEBODY!!!

Andreas Miko

Ben, No you don't need a JWT ECU to use a 300zx maf or a Q45 MAF, if you are making less then 700 for the Q45 or 550 for the 300zx, Because it wont need that silly sabtractor as Andreas so eliquintly put it. As for the injectors go, that is a different story. You can either control them with a JWT Ecu, or go my route with the AFC or a stand alone unit. I'll stick with the AFC and 300 zx maf.

Originally posted by Ben98SentraSE
Excellent info! So do I have to have a JWT ECU at all to use a 300ZX or a Q45 MAF? I know for other injectors and the fuel maps are necessary for turbo, but if I put a 300ZX or Q45 MAF on say my NA car, would it simply work? Is that kinda what you are saying Andreas?

btw, where in the heck did you learn all this stuff!?!?!!?? :)

So how much is an AFC and how hard is it/long does it take to learn to use it? Can I go at it cold and expect to not blow it up? I am all for tweakability and spending less money, but if I blow it up that isn't exactly spending less money. :) Give me the lowdown on the AFC! :)

Oh, and to run 4 bar of fuel pressure do I need a Walbro upgraded fuel pump?

Originally posted by Andreas Miko

NOW YOU KNOW AND IF YOU DONT KNOW YOU BETTER ASK SOMEBODY!!!

Andreas Miko

Don't you mean: And if you don't know, now you know, ******.

One of my favorite rap quotes. Right behind.
If the bitch can't swim, shes bound to drizound.

Will this work with a JWT ECu programmed for the BBdet?? In other words can I just simply plug-in/wire-up a Q45 or 300ZX MAF and run it with the 370's? (and then eventually get the ECU programmed to run the 550's)

Yes, if you already have the JWT ECU you can use a 300zx MAF or a Q45 MAF, Also just a bit of into the MAF in the 300zx whether Turbo or NA are the same.

Originally posted by RacerX
Will this work with a JWT ECu programmed for the BBdet?? In other words can I just simply plug-in/wire-up a Q45 or 300ZX MAF and run it with the 370's? (and then eventually get the ECU programmed to run the 550's)

Ben, the AFC goes for around 320, It is a very simple device to tune, But I highly recommend taking it to an Apexi autorized dealer for tuning if you don't want to blow up... The truth is the only way you are going to blow up is if you lean out too much and run way too much boost, we all know what happenes after that "BOOM". If you are going to tune it, tune it on a DYNO. When you tune it, be sure to tune it for both race gas and Normal driving so you can have 2 or 3 settings to use with it. Be sure to log them down somewhere for safe keeping. When I first got my AFC I went at it cold and all was well. The car ran ultra strong but it still had potential to be released by DYNO tuning.

Originally posted by Ben98SentraSE
So how much is an AFC and how hard is it/long does it take to learn to use it? Can I go at it cold and expect to not blow it up? I am all for tweakability and spending less money, but if I blow it up that isn't exactly spending less money. :) Give me the lowdown on the AFC! :)

Oh, and to run 4 bar of fuel pressure do I need a Walbro upgraded fuel pump?

You can not just put any MAF on any COMP. You should send your comp to JWT and have the comp programed to the MAF that you are using. I am always dumbfounded on why you guys try to make it harder than it is, and why you guys want to create more problems than you need. If you put to big a MAF the car will run lean and if you put to small a MAF the car will run rich, for these reasons have JWT program the comp to the correct MAF and inj you will be using, also you will be running up on timing issues also. I am not saying that PSSSHHHGOESMYSR20 is wrong with what he is doing, I am just saying if you have know idea what you are doing just have JWT do the job. If you guys are only trying to run 12s and 13s just keep it simple and stop being so DAM CHEAP. This CHEAP SHIT WILL COME BACK AND BITE YOU IN THE ASS JUST TRYING TO SAVE $150 OR SO. BLOW UP THE MOTOR AND LETS SEE HOW MUCH YOU SAVE. My first post was done just to save you guys money on the 4 bar issue and give you some knowledge. Also why do you guys need to get all creative with tuning and stuff. I have many cars that run Nismo 555cc inj and 300zx MAFs that run in the 11s, or cars that run MSD 50lb inj and 300zx MAFs with 4 bar programs that run in the 11s too. Crawl before you can walk. Just go out there and build the car, stop trying to reinvent the wheel. Lastly stand alone systems are best used for race cars. JWT, June and Blitz best for street cars.


DAMMMMMM Andreas Miko

You can not just put any MAF on any COMP. You should send your comp to JWT and have the comp programed to the MAF that you are using.

Ok Dre now Im confused, ealier you stated that the reason you pay so much money for the cobra maf program with the JWT Ecu is because it needs a subtractor program. Now are you saying JWT still needs to Tune the ECU to the MAF as in Recalibrate it? If thats the case then I understand but if it's not then I'm really confused.


I am always dumbfounded on why you guys try to make it harder than it is, and why you guys want to create more problems than you need. If you put to big a MAF the car will run lean and if you put to small a MAF the car will run rich, for these reasons have JWT program the comp to the correct MAF and inj you will be using,

For me that is what the AFC is for considering you can control the fuel maps +/- 50%, I know countless 240s with sr20s that run this set-up with positive results with a stock sr20det ecu.

http://www.tuning-garage.com/projectsilvia/news/index.htm


also you will be running up on timing issues also.

I'm using an sr20det bb ecu, correct me if I'm wrong but I believe the BB ecu compensates for Timing issues as boost increases.

I am just saying if you have know idea what you are doing just have JWT do the job. If you guys are only trying to run 12s and 13s just keep it simple and stop being so DAM CHEAP.

I agree completely.

This CHEAP SHIT WILL COME BACK AND BITE YOU IN THE ASS JUST TRYING TO SAVE $150 OR SO. BLOW UP THE MOTOR AND LETS SEE HOW MUCH YOU SAVE.

I agree with this also, like they say, do it right the first time so you don't have to pay for it twice. The only reason why I don't use a JWT ecu, is One I dont like having to send the ECU back if I happen to change something. Two I've been hearing of people incurring problems with running Rich. And Three They rape you in price. And Fourth, I just plain Love to be different. The last thing I want is to go to an Se-R meet and Talk to some turbo guy who has the same shit I have, what fun is that? I can see it now, Conversation...

ME: Hey Thats a nice turbo setup, what are you running?

Se-R Guy: JWT ECU 4 bar setup t3t04e 50lb injectors. Cobra MAF.

ME: YEah, Im running that too. How about you guy

SE-R Guy 2: Same here.

If you guys catch my drift.

The cost to do a Cobra MAF is *** same as 300zx and Q45 MAF the cost goes up on the Cobra MAF with a 4 bar program because it can only read 360 HP with out the subtracter program. The 300 zx and Q45 can read 550 and 700 HP.

The reason you are doing OK with the AFC is because you already started out using a SR20DET comp. What I am saying is not to go use a SE-R comp because the diffrence in inj size form SE-R 259cc and SR20DET 370cc is about about 45% larger. The difrence between SR20DET 370cc and 50ln inj is about 35% larger so as you can see you are in between the 50% control range of your AFC now if you were to use a comp form a SE-R that uses inj 259cc and went to 50lb inj the diffrence is about 75% so now you are past the 50% range of the AFC.

As for timing the reason why you are OK is because the SR20DET comp is already set up for turbo timing. The SE-R comp is set up for NA timing so you will have to much of an advanced timing which will cause detanation.

As for having the same shit as some one else we are only talking about comp, MAF and inj size. What you do with your turbo size, turbo type, ballbearing or regular,manifold tubular, cast or log style, exhaust, intercooler. and intercooler pipe size, the way you run your pipeing, the way you hang your intercooler is up to you.


Now can you guys catch my car. What that means is who is the best tuner of all when you guys are out on the street. To many variables to be the same.

I quit my brain hurts

Andreas Miko Going into brain gridlock.

What you just said below makes perfect sense, Thank you for clarifying.

Originally posted by Andreas Miko
The cost to do a Cobra MAF is *** same as 300zx and Q45 MAF the cost goes up on the Cobra MAF with a 4 bar program because it can only read 360 HP with out the subtracter program. The 300 zx and Q45 can read 550 and 700 HP.

The reason you are doing OK with the AFC is because you already started out using a SR20DET comp. What I am saying is not to go use a SE-R comp because the diffrence in inj size form SE-R 259cc and SR20DET 370cc is about about 45% larger. The difrence between SR20DET 370cc and 50ln inj is about 35% larger so as you can see you are in between the 50% control range of your AFC now if you were to use a comp form a SE-R that uses inj 259cc and went to 50lb inj the diffrence is about 75% so now you are past the 50% range of the AFC.

As for timing the reason why you are OK is because the SR20DET comp is already set up for turbo timing. The SE-R comp is set up for NA timing so you will have to much of an advanced timing which will cause detanation.

As for having the same shit as some one else we are only talking about comp, MAF and inj size. What you do with your turbo size, turbo type, ballbearing or regular,manifold tubular, cast or log style, exhaust, intercooler. and intercooler pipe size, the way you run your pipeing, the way you hang your intercooler is up to you.


Now can you guys catch my car. What that means is who is the best tuner of all when you guys are out on the street. To many variables to be the same.

I quit my brain hurts

Andreas Miko Going into brain gridlock.

geez....
You guys are nuts!?! :) Well...I only run 13's, so...I wouldn't know what it is to run 11's or 12's. I'm happy to say that I don't use a JWT ECU, or bigger injectors...or any of that other high tech stuff. I run 8 psi of boost, with a bigger pump and lines, Vortech FMU to boost rail pressure under boost, and an MSD boost retard box to retard timing while under boost. I had an HKS Super AFR...which is similar to the AFC..but I don't need it, so I took it off. I also use a Air-Water I/C which helps out dramatically! I made it into the 13's once, but my clutch has started slipping since then..so It's 14's for now..:) I haven't had any problems running lean, or with gaps in power delivery. I guess if I wanted to run better than that, I'd have to go with the ECU or standalone, but I'm happy with what I've got. There's not too many turbo B15 sentras out here to mess with me yet.
Peace
Travis

I am sending my ecu to get programed, I have a gtir swap, 550 injector,cobra maf, and 300zx tt fuel pump, want to run between 10, and 16 psi, also plan for cams and a head job soon, when the ecu gets sent should I just get a q45 ecu, and sell the cobra maf, also would I benifit from the 4 bar progam???

what kinda progam should I get???

thanks jason