2001 Red Coupe Bandit

Results attached. It shows the NA Run and the Nitrous run for comparison.
*Bottle Pressure was at 1,000 PSI

They lowered my current N/A Timing from 26 or 28 (not sure what it was at) to 22 degrees which lost some power, but ONLY Lost approx. 3.7 rwhp, and it will make it safer. They were just trying to be extra safe.

So only loosing 3.7 rwhp is negligible and inconsequential to the performance for the added safety, especially going down that low timing in the timing dept. and losing just 4 hp.

My A/F on the Spray is at 11.2 which is pretty rich??? but again, tuning on the cautions side, not on the ragged edge. I was shooting for 11.5-11.9. But I will just leave it here for now since they said 11.2 was fine????

FYI, I used the NX 150 Fuel Jets (#22) and the 100 N20 Jets (#35) which produced 11.2 A/F on the spray. Last time I used these jets on the runs leading up to blowing my motor, with these jets it ran A/F at 11.9?

OK Here is the Dyno Graph so give me your thoughts and opinions.



Is my A/F too low?
Is my Timing too low?

I know I can get more out of it, but is any of my numbers physically BAD for my CAR and will damage it?????

What do you guys think?????

Also increasing bottle pressure will make me run leaner and produce a higher A/F ratio.

Bandit

BrianC98Z28

iTrader: (11)

that is a little fat even for nitrous, but on the safe side which is always good.Everything looks good to me. You could prolly pick up some if you were to use a little leaner fuel jet, but if your happy with it then leave it alone and go make some runs at the track

XTrooper

Outstanding numbers, amigo! Congratulations!

Your A/F ratio is too fat. Aim for 12.0 (+/- 1).

Your timing is fine. As you said, if you lost only ~4 hp, why worry about it.

JoeyGC5

iTrader: (24)

When I first dyno'd my 75 shot I was like 460ish rwhp and tq at 11.0 air/fuel on the dot and 830psi bottle pressure. David at TNT gave me some suggestions. Now I'm running 11.8 a/f and right at 500rwhp. Of course Fast 90 combo is going on now

2001 Red Coupe Bandit

Joey, how specifically did you go from 11.0 to 11.8??? Did you tune it or use different size jets??? Again, haved a dual nozzl so I used the 150 Fuel & 100 N20 Jets. I did that run on a dyno, so I can't just change the jets wihout being on a dyno to see what going back to the 100 Fuel Jets would do.

I will just leave it for now, run it at the track, and see what I run. Running 11.2 isn't oing to hurt anything, is it?

Airwolf

iTrader: (2)

You will not have any problem running your 11.2, but it is a little rich. Also, as you run the car down the 1/4, you will go even richer as the bottle pressure drops. I personally would try a little smaller fuel jet (from one of the NX vendors) and see what you get. Try and shoot for 11.9 (give or take a little). Again, the longer you are on the juice during a run, the lower the pressure goes and the fatter you will run.
Glad everything worked fine. If you are not worried leaving a few ponies on the table (maybe 10-15rwhp) then leave it as it is.
Good luck!!!!

zmans99frc

www.robietherobot.com/NitrousJetCalculator.htm
use this calculator for you jets. i use it and got great results. i use a single fogger nozzle and went from 325 N/A to 491 rwhp on the stock tune and stock motor. a/f was right at 13 with 800 psi on the bottle. i need to go richer to be safe but i think it is because of the big shot my fuel pressure dropped more than i calculated for.

Nitro Dave's Nitrous Outlet

iTrader: (25)

Nice Gary,
Glad to see you spraying. I agree with these guys I would lean it out a tad.
Dave

biggdogg

iTrader: (2)

On my car with heads and cam i had to go 5 sizes larger on the fuel to get down to 11.8 a/f. 100 shot nx dual nozzle set up on 1999 c5.Best run 11.052 1/4 mile. Time to try 150 shot so i can get into the 10 second club.

NXRICKY

iTrader: (1)

Ok recap here for me you have the 150 fuel jet and the 100 nitrous jets with 2 nozzles? Cam you tell me the numbers?
Whats funny is your off just a fudge on hitting the number on the cookie. Dyno graph looks clean and flat..
If your happy have fun with it, and your tuner is right, if you only lost a few HP do to timing begin knocked down who cares, you have a much larger window of safety,,,
I have customer that will pull timing out until there car slows down, then add a few back in.
Ricky

GrannySShifting

iTrader: (10)

Id leave it right where it is and make a pass. bet it only picks up a negligeable amount leaning it out at the track

JoeyGC5

iTrader: (24)

My bottle was running low, so I got a refill. Then I adjusted my bottle heater pressure switch. My bottle runs about 975psi now. Left the recommended TNT jets in and I also dropped 3 degrees of timing. Pulling my plugs afeter the 11.0 runs, they looked fine, I was just fogging for mosquitos anyway.


Oh, nice numbers by the way. How's the auto holding up?

NXJeremy

Congrats on the new power numbers. Graph looks pretty good being almost completely flat. I personally would lean it out just a little and put some of the timing back in it, but that's just my opinion. Right now it looks really safe, which is comfortable.

Now get to the track and get some times for it....

99SSLS1

iTrader: (5)

If not stated before, the car will be richer on the dyno then on the street. Something to think about.

Robert56

iTrader: (2)

I agree with Jeremy, I would lean it out and put a tad bit of timing back in. Doesn't anyone else think the torque is low, not mention the HP. I think it needs to be jetted correctly for your 150hp shot? A net gain of 89rwhp and 106 torque wouldn't be acceptable to me. Find another tuner, imo. Crapola, I got over 500rw torque with a small dry? Not trying to bust your ***** Gary, but a NX kit will certainly put out better. But, I guess if your happy that's all that counts, cause even with it set up this way, you may be able to get very low 11's or bust into the high 10's. That is single nozzle right?
Robert

NXRICKY

iTrader: (1)

Robert its a dual nozzle.
Ricky

Robert56

iTrader: (2)

Get him set up with the correct jetting, and he'll be well into the 10's.
Robert

2001 Red Coupe Bandit

Thank you Guys. First off I know I can get More out of the Dual Nozzle Kit and my car but I just spent over $5,000K on a new motor and getting the heads reworked etc., so I don't care about another 15 HP because I can't afford anything to go wrong.

Ricky, I am using the #35 NitrousJets in each side and for the fuel, the 150 HP #22 Fuel Jet in each side instead of the normal #18 Fuel Jets which are for 100 shot.

Also, DON"T FORGET, These Numbers are on an A4 with a 4000 stall!! I loose alot on the dyno, so the numbers always don't tell the true story of the car.

I was already running 11.42 at 122.58 MPH on Motor and had a best (2) times of 7.15 at 94.55 MPH in the 1/8th on BFG DR's with a 1.58 60'.

I just went to Nittos and on motor last week ran 7.60 at 92.50 MPH, dissapointing, but the 60' was 1.79.

I agree as well that I might put the 100 Fuel Jets (#18 jets 50 in each side) back in and dyno it just to see what happens and lean it out a bit.

I can always put timing back in it, but I ran 395 on 26 degrees of timing, so running 391 on 22 is no great loss.

I think I have a 10 second car already pretty easily with a decent 60', but we will see?????

Ricky what # jet size would you put in the fuel on each side to get the A?F Leaner, and what do you think that # jet you will suggest will add to my A/F number?

Also guys, we dynoed it at 1000 psi, so If I spray it at 1,100 or 1,150 or 1,200 won't that lean me out anyway???????????????????

Thanks so much for the replies. I appreciate it!!!

Robert I think if I were at 11.9-12.1 I would be over 100 Additional RWHP usijng the NX 100 jets, so that seems right. The torue is low, but it is going through a big *** stall??

Thanks

Gary

cantdrv65

iTrader: (3)

11.2 is too rich....
I wouldnt touch the timing but Id definitely go with the 100 fuel jets, that alone would put you right on the money. IMO bottle pressure is perfect at 950 to 1050....

2001 Red Coupe Bandit

Cool, Thanks. I just am going to run it how it is for now and see because I just don't want to switch jets to the #18 Fuel (1oo shot) unless I run it on the dyno to be 100% sure what the New A/F would be.