RWHP or Flywheel?

[SexyTransAm]

iv read that a 150 shot is bout all ya wanna try on a stock lt1. but is that wheel or flywheel power?

[gregrob]

The LT1-specific kits such as available from Nitrous Outlet, HSW, etc are rated at RWHP.

That's the thing I like about my n2o outlet kit and the reason I sold my nos brand and bought it. They have tested it and jetted it to the ground.

There are many people running 150 wet, properly setup and tuned, at the rear wheels and dont have a problem.

I'm starting with 100 for a very short time just to make sure everything is good to go, then it will be 150 for me.

After the standalone fuel system is built this winter, it will be 200 shot, on a stock short block.

[96lt1m6]

It really depends on the N2o system you have NX,TNT etc. are rated at the tire. generally you can figure 148-155 there have been some that have gotten more it comes down to mods tune etc.

[SGT_WRIGHT]

After hitting the books (for some good ole math), and the dyno, I have seen 128 rwhp on my Zex kit 125 shot. With the jets provided (34 Fuel / 54 N20), the math has it claimed a 130 shot. According to Zex, thier kit claims power to the wheels. It may be dependant on the "kit" as to what power is seen.

[SexyTransAm]

well i dont really have a kit i kinda put a kit together from other kits. NOS bottle NOS noszle and compucar noids. the jets im usin right now r 53 n2o and 30 fuel its like a 125 shot at the wheels and botu 105 at the wheels. the nitrous calculator i used is http://www.robietherobot.com/nitrousjetcalculator.htm
i was thinkin bout steepin up to a 150 shot. but idk if the " 150 max" is at the wheels or flywheel? iv got 61 and 36 jets that would be like a 175 flywheel and 150 wheels according to the calculator. but idk if that is too much of not

[SGT_WRIGHT]

Here is the info that I have kinda put together from various N20 companies, books, and racers:

*Without tuning down the timing, a 125 shot is the highest you'll want to even attempt. I have ran a 125 shot (31 fuel / 54 N20 @ 40 psi fuel pressure @ WOT) for about a year now, but I feel its time to do it correctly. I'll be brining it down by 5 degrees as a start, but according to the author (Jeff Hartman) of "Nitrous Oxide Performance Handbook" you may actually see optimal hp gains with even -1 or -2 degrees extra. As an example he installed and tuned his 91 Mustang with a 150 shot. His timing was set back 8 degrees when he saw the best gains, which is -2* more than the "rule of thumb, -2* per 50hp." His book is a thourough guide to N20 use, and I HIGHLY recommend it! ($25 at Barnes and Noble)

*Zex claims the 150 shot (38 fuel / 67 N20) will not have enough fuel pressure to fuel both the injectors AND the wet kit. They have a fuel pressure booster you can purchase, which is installed in-line, to support the extra needed fuel.

Give this calculator a try if you are using a "Wet" kit
http://www.dynotunenitrous.com/store/Scripts/Jet_calculator/nitrousjetcalc.asp

My bottle pressure is usually around 920 psi, so make sure you throw that and the stock 40-45 psi fuel pressure @ WOT into account.


And to not continue rambling on, but I read on your Fquick that you are using the Hypertech programmer. Whatever you do, I wouldn't use the "Engine performer" mode on it. Bill at Hypertech informed me it sets your timing +4* The 160* setting, gears, and shifting points are all ok to use, but I would stay away from the first option it prompts you.

[SexyTransAm]

the only reason i have the Hypertech programmer is for the 160* and gear change. an its lookin more and more like im just goin to leave it where it is and be happy. thinkin bout it im gettin greedy and thats bad! lol

[SGT_WRIGHT]

Hehe i understand that man. I'm just glad the kit I purchased DIDN'T come with 150 jets, or I may have tried them lol. With the mods I have seen on your vehicle, I'd grab a madtuner.com tuning, and just rock a 125 shot. It'd be safer that way as I see it. I just love my Ole Bird too much to see it go BOOM haha.

Let me know if you need any info with N20. I'm no expert but I've been studying it for a while now with LTX/LSX motors, and seen some cool ins and outs to try.