Questions about nitrous

**Jper** · 11-08-2008, 07:52 PM

Originally Posted by 2001GTTT

I already had this thought. 50 shot FTW. im gonna do it, but it has a plastic intake manifold. : (

Sneaky pete!

**scott5** · 11-08-2008, 07:56 PM

Originally Posted by 2001GTTT

nah. what he is saying is if you take it to a place they will put it on a dyno and make you a tune for your nitrous. Therefore they can tune everything right there and the diablo would be useless. Dynotune > Handheld. Most shops use SCT software, thats all.

yup

**2001GTTT** · 11-08-2008, 08:04 PM

Originally Posted by Jper

Sneaky pete!

yea but that manifold will go boom. lol. Theres gotta be a way i can switch em out with an explorer or something.

**Jper** · 11-08-2008, 08:07 PM

Originally Posted by 2001GTTT

yea but that manifold will go boom. lol. Theres gotta be a way i can switch em out with an explorer or something.

True

**HidalgoGT** · 11-08-2008, 08:31 PM

Jper I had litteraly the same car. I ran stock fuel pump Zex wet kit 100 shot diablo tuner. I adjusted the timeing a lil and wot fuel a lil. I ran 3.73 gears. I was running 12.13's at 113-114. With a good tune I think it would broke 11's. Maybe 4.10's. You have to be careful of the lil backfires that happen sometimes. Twice to me and each time opening the hood was like waiting for a bomb to go off. I'd buy an aftermarket intake something simple like performance product aluminum version. Lil more reliable then factory plastic.

**Jper** · 11-08-2008, 08:37 PM

Originally Posted by HidalgoGT

Jper I had litteraly the same car. I ran stock fuel pump Zex wet kit 100 shot diablo tuner. I adjusted the timeing a lil and wot fuel a lil. I ran 3.73 gears. I was running 12.13's at 113-114. With a good tune I think it would broke 11's. Maybe 4.10's. You have to be careful of the lil backfires that happen sometimes. Twice to me and each time opening the hood was like waiting for a bomb to go off. I'd buy an aftermarket intake something simple like performance product aluminum version. Lil more reliable then factory plastic.

12.13's wow. Thats impressive. Gears are soon to come. Im definately looking into doing this, just REALLY worried about popping my motor.

**SAC81** · 11-08-2008, 08:43 PM

I know a lot of people that run 100 shots without a tune. IMO you dont need it.

I pretty much agree. I home tuned my 5.0 on was fine for almost 4 years on a 125 shot.

**HidalgoGT** · 11-08-2008, 08:53 PM

The one with me standing there I won street stick class. the other is after some more mod's

**Jper** · 11-08-2008, 08:57 PM

Thats a sharp lookin car man

**HidalgoGT** · 11-08-2008, 08:57 PM

LOOOOOOOOOOOOOOOOOVed that car.

**Jper** · 11-08-2008, 08:59 PM

Its a sharp color man, I love looking at it after a fresh wax

**HidalgoGT** · 11-08-2008, 09:00 PM

Originally Posted by Jper

Its a sharp color man, I love looking at it after a fresh wax

it seen lots of wax. It was at the World of Wheels car show and won a plaque. Definetly miss it. Though I have my coupe now and look forward to rippin it apart. If I ever find a damn garage to rent.

**2001GTTT** · 11-08-2008, 09:30 PM

while were on the subject, my merc. has a plastic intake manifold, does anyone know what i could switch it out with so that it would be safe with a lil spray??

**HidalgoGT** · 11-08-2008, 09:34 PM

Originally Posted by 2001GTTT

while were on the subject, my merc. has a plastic intake manifold, does anyone know what i could switch it out with so that it would be safe with a lil spray??

if your talking a 50 shot it should be fine.

**2001GTTT** · 11-08-2008, 09:35 PM

Originally Posted by HidalgoGT

if your talking a 50 shot it should be fine.

yea 50 shot for sure. Im just worried about it...its hard plastic but im thinking it would shatter pretty easily.

**Jper** · 11-12-2008, 02:24 AM

Well guys I found a sweet deal I wanna jump on..But I need some advice. I found a ZEX Dry smart kit thats brand new. Some kid is selling it for a price I cant pass up..He said the jets are set for 55 65 and 75 shot. Is this a good kit to pick up? I need info asap

Also, where can I take it for a tune?

**HidalgoGT** · 11-12-2008, 07:15 AM

Not a dry kit for a 4.6 you want a wet kit.

**2001GTTT** · 11-12-2008, 10:22 AM

Originally Posted by HidalgoGT

Not a dry kit for a 4.6 you want a wet kit.

yea do not buy that man.

**stieny** · 11-12-2008, 11:39 PM

Ok, I'll give my opinion on N2O for I had it on my '00 GT when I had it.

I had a zex wet kit and I hated it!!! If I was to do it over again with N20 I would go NX. I had nothing but problems with the kit. That stupid box is more hassle then its worth. The "safety" thing that zex tries to sell is nothing more then that little box shutting down if it loses fuel pressure which you could easily solve by putting on a FPSS. It does not monitor your A/F like I hear a lot of people saying. It doesn't know when the motor is rich or lean. Mine, like many others that I have heard of, would keep shutting down when I would make a pass, or only spray fuel. I messed around with it so many times in the staging lanes and everything always checked out until I made a pass. Ask slow01, he can verify all the problems I had with mine. And I did install it correctly.

Now, on to the tune. I had the wet kit with all the safety features: FPSS, msd digital window switch, SVT Focus pump, colder plugs. I ran the stock injectors. I would recommend you get it to the dyno. I ran the 70 shot pills a few times on the street after I first put mine in just to make sure the kit was working.

I then took it out to what was then Kaufmans, now SGS, to have it tuned on a 125 shot. Yes, zex measures at the fly, so a 125 shot is similar to a 100 shot at the wheels. Even with a larger pump, I was still leaning out a lot on tip in. I got a SCT flip chip and Dave tuned two banks of the chip, one for advanced, non N2O driving and the other was retarded for the N20 runs.

Dave tuned out a lot of the tip in and got it to a safe A/F all the way through the rev range. I think my tip in was at around 13.0 -14.0 and went right down to about 11 - 11.5 to redline. He also checked the duty cycle on my injectors. They had plenty left in them because of my larger pump.

I would say to make sure you do it right. Short cuts cause problems with any power adder, especially with nitrous. I wouldn't chance it by assuming that your A/F is fine. I would have it checked and tuned. A SVT focus pump is cheap insurance and makes sure you don't run out of fuel. You don't want to lean out on nitrous.

Blowing apart your intake will happen with plastic or aluminum intakes. Its a chance you take with a wet kit. If the fuel puddles and your motor backfires igniting the fuel, it will blow apart any intake.

For numbers on the dyno, I just pulled out my dyno sheets.

My car put down: 252.58 rwhp/290.68 rwtq N/A. On a 125 shot it put down 361.26 rwhp/506.42 rwtq.

I have the videos if you'd like to see them as well as other pics of the install. I'm sure I'm forgetting things about my set up so if you think of any questions, feel free to ask.

**97LaserRed** · 11-12-2008, 11:54 PM

Originally Posted by stieny

I would say to make sure you do it right. Short cuts cause problems with any power adder, especially with nitrous. I wouldn't chance it by assuming that your A/F is fine. I would have it checked and tuned. A SVT focus pump is cheap insurance and makes sure you don't run out of fuel. You don't want to lean out on nitrous.

that just about sums it up!! stieny knows what hes talking about!! Do it right or dont do it at all. unless you want to chance it, just do a 50 shot without tune.