Who here has Jim Wolf fuel upgrade with cobra maf and 50 lb injectors?

[Turbo_Nismo_EC]

Hey yo, first of all thanks for taking the time to look at my post. I own a 95 Nissan HB truck with a built SOHC KA and have been talking to Jim Wolf Technology about their fuel upgrade set-up with the tuned ECU, Cobra MAF, and 50 lb injectors. I just have a couple of questions. Now, have any of you run this set-up on a daily driven vehicle? My concern is emmissions. I can pass my state visual inspection, but I must be able to pass the emmissions part of it. Do you know anything about this? I talked to Ben up at JWT and he says that he doesn't know, as it wasn't designed to be emmissions friendly. I realize this, but then again, what makes emmissions anyway? I have thought about taking two(yes I said two) Catalytic converters and making them into a single piece and bolting them on for emmissions time, and then removing them afterwards., to get my performance back. I have noticed that some factory cars have two CATs, you think this is how the manufacturer got by with their emmissions part of the car? I am ready, right now, to buy that JWT kit if somebody can help me out. But please don't answer unless you are absolutely positive about your answer.

Next, about the amount of power a KA can handle. I was reading about how someone has been running over 300 whp and how he has been running that JWT kit I was talking about earlier. This system works well? I am new to this and do not understand it very much, but I did build my motor giving it everything new except rods, but which are completely worked for strength. I would like to run about 300 FLYWHEEL hp in my truck, you think that with my new motor and JWT fuel system I can do this safely w/o detonation or breaking a rod?

Finally, I was talking with Ben from JWT and he was saying that I couldn't run my blow-off because it lets the excess air out into the atmosphere and he said that could cause a problem with the way my truck will perform, since the maf will be telling the computer that air is coming and then it not being there, and running rich for a second. I can handle a little rich during my shifts, but how bad is it? I would really like to know.

Again, thanks for taking the time to look over my question. I am new to all of this and am learning new things every day. Again, please do not give me a definite answer unless you are absolutely sure about what you are saying. Not to be rude or insult you, I just couldn't say it any other way. Please don't take it wrong as I do not mean it that way. Any information any of you can give me will be greatly appreciated and I am looking forward to your replies.

Thanks,

Jason a.k.a. Turbo_Nismo_EC

[Movingviolation240]

The Z32 MAF is much cheeper, and dosn't require an additional $125 adaptor from JWT to run over 400rwhp (or somwhere in there) like the Cobra one dose.

I'd ask about the Z32 program, they make more money on the Cobra MAF's I think and that's why they push it so hard. (at least that's basically the response I got from them when I called)

Paul

[C-Kwik]

I know someone running a JWT 50LB Set-up with no turbo and it passes smog. My turbo car passed CA smog(visual was ignored) with only an FMU for fuel,and no EGR. Used a single Catco Cat. With a JWT set-up and all smog equipment, you should have no problems passing smog(Any Visual aside). This is assuming everything is working correctly of course.

As far as how much power you can run, this answer will always be "it depends". The JWT 50lb set-up should be able to handle 300 flywheel HP. The motor will depend on how well you built it and what kind of parts went into it. We have seen Stock DOHC KA's put out 350 at the wheels on stock internals. I can't really comment on how detonation resistant a SOHC KA is in comparison to a DOHC KA, but your rods should be able to hold up to the boost as long as there is no detonation. If you've upgraded your pistons to forged slugs then you might be ok assuming you have matched stock CR or lower.

As far as the Blow-Off Valve, you will need to route it back in. The motor will die if you come off boost to idle too quickly. A couple of ways I've seen people get around this is to run a blow-through MAF set up where the MAF sits in the pressurized side and the BOV is mounted before the MAF. Stillen run's their Maxima Supercharger Kits this way. I'm not sure if they made any adjustments to better accomodate it though. You can also try one of the electronic fuel management set-ups as well as they have tuning built in to prevent the motor from dying upon atmospheric Blow off. S-AFC Digital I beleve can do this and the Greddy Emanage as well.

[Turbo_Nismo_EC]

Thanks for your replies, I appreciate them a lot, but I have a couple things to add and one question. Ok, as for running the Z32 MAF, I already have the Cobra one so that will not be a problem, but thanks for the suggestion anyway. Also, when I said I built my motor I did mean that I replaced the factory pistons with custom 8.5:1 units from JE, so they should be good to go, no problem, it's just my rods that worry me. As for my question, why would somebody run that JWT fuel system w/o a turbo? It seems kind of odd to me, since I cannot see any way the KA can produce 300 hp naturally asperated.

Again, thanks for your time,

Jason

[king240]

I've rebuilt my ka, as well as small block chevs, comparing the rods they both use 3/8 rod bolts, and the rod itself is just as beefy, if not more so than the SBC, I say they can handle it, you can always install ARP rod bolts for alittle extra insurance.

[C-Kwik]

As for my question, why would somebody run that JWT fuel system w/o a turbo?

Actually he hasn't completed putting his turbo kit together yet. He just got his fuel system running first.

[Turbo_Nismo_EC]

That is what I was kind of planning on doing to check and see if my truck would pass emmisions before installing my turbo. So technically, if it will pass w/o the turbo, it will with the turbo....right? And yes, to add to the rod question, I did install beefier rod bolts, the engine builder insisted on it.Thanks