Well, I have a couple questions on injector/maf/fuel pump/turbo limits and I'm hoping someone will be able to answer my question. I'm trying to get all of the numbers together so i can put them in one big FAQ (maybe add to the one on this forum too?) Are these limits close to accurate? all are whp if not stated:

-370cc injectors- 250-260whp (can fit in stock fuel rail)
-msd 50lb injectors - 400whp (needs fuel rail and clips, what about the JWT 4 bar program?)
-stock maf- 250-260whp (about the same as the 370's?)
-z32 maf- well over 300whp (really no limit?, but i need the harness?)
-cobra maf- well over 300whp (500+whp? splice wires- no big deal)
-z32 fuel pump- over 300whp (but requires modifications)
-walbro 255lph- over 300whp (no modifications required)
-T25 (bb) turbo- limited to about 8-10psi, limited to about 225-250whp depending on setup?
-T28 (GTi-R) turbo- a couple more psi, maybe 10-12, little more top end power, only works on gti-r manifold, probalby tops out around 250-275whp depending on setup?

I had someone check those numbers and he thought they were all pretty close, so hopefully i didn't monkey anything up too badly since I talked to him.

Thanks!
_

we shall see exactly how far the T25 will go saturday, wish me luck

You can also get 3-bar and 4-bar programs for MSD 72lb injectors, but they need a special harness in addition to the special rail. The Cobra MAF also requires additional (expensive) modifications to the ECU to correct for it's errors (thank you, FoMoCo). Considering that you can get to 900HP on a 300ZX, I bet that 450HP wouldn't be too much trouble for a single Z32 MAF. It would be nice to know what a Q45 MAF can flow; I bet Clark knows...

Your boost numbers on the T25 and T28 are a little conservative; you can run higher than that (about 12 and about 16, respectively) for short bursts. Bluebird engines with stock MAF, Injector, and T25 have been known to roll 230 okay. HIGHLY tuned GTi-Rs with stock MAF/Inj/Turbo have broken 300, but that is with standalone management; 280 is more like it. These are kind of ragged-edge numbers, though. You don't want to run like this for very long. :)

Right, I was hoping to get the reliable limits of the different components. I know you could probalby push a couple more hp out of some of those, but if it's not reliable I would hate for someone to read that and then go break their car trying to match that number. Thanks!

D'oh! Forgot to mention HP capacity of the 72lb injectors; about 576 at the crank.

Hot Shot claims that their Gen-I T3 turbocharger is good for 300 HP. You may want to investigate that turbo's specs and share; we may be able to do the same power for less money. FMax can't go without mentioning, but I have no effin' clue how their different stages rate. Hell, for that matter, we haven't even explored the power levels of various parts mentioned here on high-comp engines like a stock DE.

You may also want to mention the fact that JWT cams are cool for turbo cars, too, like the S3 and C2 grinds. How much power? Beats the crap out of me. I wish somebody would find out and tell me, too. ;) Lots of people say that S3s rock on street cars, and Cadle seems to think that C2s would be good on really big mondo-engines, but you'd have to talk to him to find out why.

Originally posted by CowboyDren
You can also get 3-bar and 4-bar programs for MSD 72lb injectors, but they need a special harness in addition to the special rail.


JWT only offers the 72 lb/hr program in 3 Bar!

4 bar is only available for the 50 lb/hr injectors.

Whoops! Sorry...

Originally posted by TurbochargedSER

4 bar is only available for the 50 lb/hr injectors.

Isn't it available for the 370cc injectors as well. I thought I remember reading that.

Yes, it is. According to Andreas Miko, via phone. :)

According to what I've read here, there would be no problem to run 10psi on my BB for three or four quarter mile? Then I'd get the boost back to 7psi.

I have BB ECU
front mount
soon 3" exhaust

You can run 12 PSI with a T25 for drag racing, but make sure you give it lots of time to cool down between runs.

Andreas Miko is the only one I know who sets up the 4 bar 370cc injecotrs w/ bored MAF. If my math is correct, it should be good for around 300 whp. I'll be sure and let everyone know sometime soon.
John

280 whp. About the limit of the 4 bar 370cc and bored MAF.

So will the following give me at least 250 hp at the wheels?

JWT ECU
4 bar 370cc injectors w/ bored MAF (assume from stock?)
T28 turbo w/ GTi-R setup
GTi-R Manifold
3" OEM or Custom Downpipe
Tial BOV
JWT S3 cams
Forge Motorsport IC with piping
3 inch mandrel bend exhaust
Blitz Boost Controller
ACT Street/Strip Clutch

Do I need MSD 6A Ignition?

Will it work better if I go with the MSD 50 lb/hr Injectors and Cobra MAF instead of the 4 bar 370cc injectors w/ bored MAF? Is it correct that when you use the MSD 50 lb/hr Injectors you need to accompany a fuel rail and possibly a fuel pump? Ooowwwhhh.....I see $$$ signs.

I run the 370cc's at 4 bar... Very nice!!!
Travis

Yup, that will get you 250 whp.

Actually it should be closer to 275whp with the bored out MAF with a T3 turbo and air to water intercooler. It feels strong..
Travis

Originally posted by unlucky
Actually it should be closer to 275whp with the bored out MAF with a T3 turbo and air to water intercooler. It feels strong..
Travis

So what you're saying is that I would get more than 275 since I opt for the T28?

300 whp is attainable with 370cc injectors @ 4 bar. Give me a couple of weeks and I will show you. The black car as Andreas calls it, made approx. 280@ 12 psi. There is still a margin for another psi or two safely, given some tuning watching a/f, EGT and a little timing, fuel pressure adjustments. For track duties, bring race gas into the equation and 15-16 psi should be attainable, well clearing the 300 whp goal, proably around 310-320. It can be done and safely.

V knot,
Travis is running a T3, slightly larger than the T-28, going to provide more vloume, making more power. Travis also has a air/liquid intercooler with a rather large heat exchanger, this is giving him a better efficiency in cooling the intake charge temp, which is going to allow him a little more over head to make power, not to mention he is running 9.0:1 compression, so detonation issues are not as prevelant. The setup you are looking at will easily net you 250 whp with a good front mounted Intercooler, 3" exhaust. Item such as cams and pullies will only help more. You have a good plan, go with it.

So, does JWT have the capabilities of burning me an ECU that would support a cobra maf, 370cc injectors, and a walbro fuel pump w/ the 4 bar program for my air/fuel needs or are all these cars currently running another type of engine management?