I figure i might as well post results since there are no so many cars in here using nitrous oxide.

For all of the guys with TPI cars looking for a quick reduction in ET and a wicked gain in torque production...wow was I impressed.

I bought a Nitrous Express(NX) wet kit that is used for LT1 cars. It uses a single fogger nozzle that you place in the intake tract. I actually drilled a hole in my mass air sensor behind the heated wire and threaded the nozzle into it and sealed it with a sealant. There isn't a lot of room to drill BEHIND the MAss Air Wire but it had to be done from what I seen. I didn't really want to run a plate and this way worked out perectly. Once all the lines were hooked up to the nozzle and both of the solenoids were mounted, my friend Joe wired the entire system. The bottle heater, the fuel pressure safety switch, WOT switch, all of the in-car switches, the remote bottle opener all worked flawlessly on the first try!! For once success!! After the final wires were soldered, we set the tming a 4 degrees(stock is 6 and i wa actually runin 8-10), we tested it out on a backroad at 3am...by 5:30 am(NOOO SLEEP) we were on th road headed to Mid Michigan. I made one all motor pass and got a normal 15.60 like always. After that i sprayed a 75 shot until the bottle was empty. It went 14.20 and i defnately got greedy. I'm sure the 100HP jets would have gotten me into the 13's easily...this is a totally stock car with a 2 chamber flowmaster muffler on drag radials with a 3.08 gear!! Does anyone know how I dropped 1.4 seconds in ET and gained 8 MPH? Just becaue of all the TQ out of the hole? The MPH seems perfect given the shot..MPH went from 85 to 93(Yes...it's pathetic.. )

Imaine if you did th same but added some headers, a 3.42 gear, a ported intake,a 2600 rpm converter, and a few other cheap mods. With a 100 shot it would be a solid 12 second ride and it might even go 12's on a 75 shot, who knows...

Goodluck to anyone who tries it! NX stuff seems to be te bst around and ya really can't go wrong!!




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Denny Villemure
1989 Camaro IROC-Z Convertible, 305 TPI, 2.73 Gear, Flowmaster 2 chamber. 15.60 on motor, 14.20 on a 75 shot from NX. Woo hoo!
www.denny.cz28.com

 

You just wait Denny, I'll take you and your Caged 14.20 running Iroc NA Did ya see the post in the Great Lakes forum of my first few passes at Martin? I ran 14.4 @ 96. That will get better with PROM tuning. I hope for a 13.99 pass this year

Nice times with ONLY a 75 shot! Thats amazing Denny! I'll see ya around sometime. BTW how much did those Nitto's cost you?

 

Yea, but I think we all really want to know what happens when you put a Ram Jet 383 under the juice in a 89 IROC vert. Slacker, even my **** is almost done

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Chuck Kulchar
1991 Camaro RS LO3 A4
15.823 @ 85.84 MPH
Project sLO3: the lil big project

 

Hey Chuck, what do you think would happen with a 12# boost on a fast burn 385 in an
87 Z. I have been having a hard time getting response for any questions regarding my application. I am looking for opinions or guesses as to what will happen before I can not send the engine back, PLEASE HELP.

 

Heh, Im not the one to ask that question. The guy to ask is the one that started this thread, AutoRoc. My *** is just a lil TBI ***** But Id imagine 12 lbs would be too much unless the bottom end is built more than the stock crate.

 

From what I've heard, the NX stuff is conservatively rated. It seems that the NX 100 shots are making more power than competitors 150 shots.

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The IROC Homepage
View the Restoration of an 85 IROC
Weekend projects aren't.

 

Denny! That's sweet!!

I have been considering hiding a wet kit on my T/a until I build the motor.

Steve

 

So you decided not to go carbed after all

Glad to hear See what TPI can do when it runs right???? Maybe try throwing some Vortec heads and TPI base from Scoggin-Dickey and you could go in the low 14's NA and low 12's on hose???

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Mike L.

1987 IROC Z 5.7 TPI A4 3.27 Borg-Warner four wheel disc
Mods: 2300-2500 Stall Converter, Shift Kit(GM parts), TPI Specialties Stage 3 PROM, Modified airbox w/ K&N's, Relocated MAT sensor, Gutted MAF, 160* thermostat, MSD 6A, Accel 8mm Wires, bypassed TB coolant, 3" Flowmaster 3 chamber single outlet, custom adjustable cutout, 3" MAC mandrel intermediate, airfoil, ported plenum. !smog, Crane AFPR, Accel rail mounted FP gauge, Harlan shiftlite, 24lb. injectors, Hedman headers, a few others I forgot...??? FINALLY GOT PAINT!!

Check out my IROC webpage!

 

Sounds like I need to invest in a kit for the"SLEDD".Good job Denny I'll be lookin for ya when I get Home around July of 03.....
James

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91 Z-28 305 H.O. 210 RWHP
crane hi-6,holley reg,air foil,3:73 richmonds,Ed Wright stage 2 chip,msd wires,SLP headers,best e.t 14.4@99.02mph

95 S-10 Blazer 4.3l A4 W/230,000 original miles.Never been touched but getting tired.Still likes to do burnouts!!!!

 

Oh yes...it IS carbed already, Mike. I figure i'd post the TPI results from a month or so back. The new ntake pulls to 5500 easy, I'm pleased..haha Now I just need to get that 3.73 in there

Brad, you wait till i get an NX plate on this 305 with a 100 shot, some 3.73s, and bigger 315 Nitto Drags You tune all you want

About 12# of on the ZZ4 bottom ended 385 Fastburn crate engine..Goodluck I'm sure it will hold for a while. short while? What you could do is put a JE piston in there and try 15 pounds.. Now yer thinkin!

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Denny Villemure
1989 Camaro IROC-Z Convertible, 305 TPI, 2.73 Gear, Flowmaster 2 chamber. 15.60 on motor, 14.20 on a 75 shot from NX. Woo hoo!
www.denny.cz28.com

 

hey denny, I didnt know you joined the dark side w/me and went carbed? bet that was an imidiate gain in power huh? those tpi's are dogs when stock. I know then CAN run, but not until after youve invested cubic tons into them. hahaha.
have you track tested it after the swap? just curious. also, why midmichigan? dont like the ice rink that we call milan? I think Im going to norwalk as soon as I get my new trans. and heads on.
what carb./intake/aircleaner did you use? just curious how you cleared the stock hood.

chris

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1985 Iroc Z, (parting out, email for parts)

1986 Iroc Z
355, ported camel hump heads,750 holley, 700r4, 10.5 compr., forged flat tops, solidcam .501I .510E, 4gen rear w/3:73 posi, girdle, and disc's, Edel. torker II, shift kit, 3500 stal, hedmann LT. headers, 4 gen seats, man. strg., lt1 starter, alum. w/p, msd 6al, coil, dist., mallory wires. mid 13's for now. lots to play w/still

1995 z28,SS Hood, Iroc style spoiler, tints and black outs, 700r4,2400 act. stall speed,B&M hammer shifter, 17" budnick trilogy III wheels, 275/40 ZR17, 160 stat, man. cooling fan sw., homemaid CAI,1LE elbow, hypertech airfoil, t.b.bypass,!cat, flowmaster, !maf screen, relocated batt., 1LE front l.c.a.s', poly trans and torq.arm bushings, MSD 6AL, custom program, p&p maf, accel coil, and under drive pulley

mods that i have, just not on car yet:
msd wires, edelbrock mid. headers, edelbrock rpm catback

 

congrats on the run denny sounds like its coming together nicely..........also nice to hear everything worked on the first time quite a blessing.......did you by any chance run out and play the lotto that day?

as far as nx being conservative to others is all variant on the application an individual setup.......sure is alot of fun when it all works right. just stay away from werx dyno setups.

 

Chris,
I did Edelbrock Performer with a new Holley 600 Elec. Choke, Mallory regulator, and a stock TBI air cleaner...I am looking around for a decent aftermarket air cleaner in a 2X12" size but i didn't see an yet. The TBI piece definately touches the hood liner Definate increase in top end! The 3.08 gears are killing me though for sure on the bottom end.

Jeff! You are right man! ME and Joe definately didn't think the fuel pump would work right but it did, the regulator worked, all of the guages worked, It purrrs at idle around 600 smoother than stock!!

The trans still doesn't work right though It shifts at 3000 RPM most of the time and he kickdown never works. I used Lokar throttle and kickdown cables. A friend of mine said the computer is messing with the trans in a way. He might be right because converter lockup isn't happening either which is computer related...

Anyone have some advice? thanks

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Denny Villemure
1989 Camaro IROC-Z Convertible, 305 TPI, 2.73 Gear, Flowmaster 2 chamber. 15.60 on motor, 14.20 on a 75 shot from NX. Woo hoo!
www.denny.cz28.com

 

Denny, if you want I could burn you a stock replacement chip for your computer. I seriously doubt that your problems are in the PROM but it just might be. I wish I lived closer because I could stop over and grab your chip to see if all is well inside it.

Do you know anything about the tranny?? I know that when I got my shift kit installed, I had relatively no OD-D downshifts when I mashed it. I had to manually do it. I know that people can screw up and drill the holes too big when installing a shift kit. That just screws everything up. I am not sure that it would effect your motor though....

 

Brad...The tranny i still 100% stock. All we did was replace the intake. We had to do an aftrmarket kickdown cable but even hen that is not cnnected, the car shifts funny. I really don't even care about the kickdown because I can conrol gears with my shifter...I just want it to shift nicely and under 3000 RPM while just idling around town. full throttle i can hold any gear to 5500 easy. later man And I still thnk it's computer related because the more I drive he better it shifts. It starts a 3000, then it'll go down to 2500, then it will start shifting at part throttle around 2000 which is good...

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Denny Villemure
1989 Camaro IROC-Z Convertible, 305 TPI, 2.73 Gear, Flowmaster 2 chamber. 15.60 on motor, 14.20 on a 75 shot from NX. Woo hoo!
www.denny.cz28.com