n2ols1cam

I have a quick stupid question. I know most nitrous systems are rated at the wheels. But is that from your peak motor horse power or from the power you make with your timing pulled?

For example: if you make 400rwhp with full timing and 380rwhp with 8 degrees of timing pulled and you spray a 200 shot should 580rwhp be a normal number? Or should it make 200rwhp more from the power you make with full timing in?

HCI2000SS

iTrader: (2)

The ones that rate at rwhp usually do so from a standard timing pulled. At least that's what I was told

M.BOZZ

iTrader: (14)

I believe that the rating is with timing pulled, because you have to pull timing when your straying. My motor ( n/a ) made 479whp and 486wtq now on a 300 hit and timing pulled I made 725whp and 792wtq. So the numbers are close

blk00ss

iTrader: (66)

It's off 54hp. Doesn't seem close to me.

brandon@nitrousoutlet

iTrader: (2)

There are way too many factors. Tune up,drivetrain losses, converter slip etc. Chase the timeslip, not the dyno numbers.

NitrousExpress

iTrader: (4)

It is almost a combo of both... Factory LS cars can spray 100hp on the factory tunes and 9 out of 10 times they make the 100rwhp more than factory. On the larger shots with timing pulled you should make within at least 10hp of the jetting horsepower, but all of this does depend on the tune up on the vehicle.... If tuned to 10.0AFR then there is no way your making the power. Where as something tuned at 11.8-12.0 should make the power.

-Chris

AnotherWs6

iTrader: (17)

+1. Within 18% is not very close.

M.BOZZ

iTrader: (14)

Yes Chris I'm at 10.0 afr at the moment. I've only been at the track 1 time on this size shot. I will be back on the dyno soon and get things more in tune. So it should be within at least 10hp of jetting ? I'm learning as im going

NitrousExpress

iTrader: (4)

Going from a 10.0AFR tuneup to a 11.8AFR tuneup.... You will pick up a significant amount of power!

With a correct tune you should be within around 10hp of the jetting in most cases.

-Chris

elephantrider

iTrader: (2)

i thought dyno tuning with nitrous was kind of a no - no.

just asking because i'm about to install a kit on my gto and
have been reading about the best way to go about tuning,
whether at the track or on the dyno.

HCI2000SS

iTrader: (2)

Why do you say this?

elephantrider

iTrader: (2)

i've read that a dyno doesnt put as much heat in the cylinders as being on the track, so a track tune would be best, especially if you already have a solid tune on the car.

i'm still learning and reading, so dont take it the wrong way still trying to figure it all out.

M.BOZZ

iTrader: (14)

My tunes are done on a mustang dyno. Not to many people like them because of low numbers but it seems its the safe way of getting your tune in line

HCI2000SS

iTrader: (2)

No problem man, we all start somewhere lol That's not necessarily wrong but the best tune will be one that uses both the dyno and street/strip

NitrousExpress

iTrader: (4)

I like to tune about half a point richer than WOT N/A AFR. Normally around 12.0-12.5.

Pull the timing from where the motor makes its most power N/A. There will be a slight powerloss N/A with the timing pulled, and a properly tuned nitrous system should make pretty close the the HP rating if tuned up correctly.

On higher horsepower applications, such as a 300 shot, there is more that goes into it and many different variables that will determine how much power a motor will make. (Timing, AFR, Cam specs can either help or hurt power on nitrous at higher horsepower levels, as well as the rest of the drive train, transmission, etc.) These are general ratings, but if tuned up correctly, they should make pretty close to the HP rating, to the wheels.

Thanks,
Garrett