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1999 mustang gt nitrous dyno numbers

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13K views 67 replies 14 participants last post by  mrbigjeep  
#1 ·
1999 mustang gt, 5speed, 3.55 gear, JLT ram air intake, lightning maf, pypes long tube headers, off road x pipe, UD pulleys, BBK 78mm TB and spacer, 150 wet NX kit, stock long block.

On a Mustang Dynamometer

265 RWHP / 325RWTQ

382 RWHP / 540 RWTQ

the motor numbers seemed about right but the nitrous number didnt seem quite right i was wondering what you guys thought about it
 
#2 ·
made the torque it should have. hp #'s are a little low. but mustang dyno's read low.
 
#6 ·
i actually just had the car dynoed and tuned ive been needing one for a while the first pull we made on the motor was 11:1 air fuel we didnt even spray it on that tune, i figure the afr on spray probly would have been somewhere in the low ten to one region so the tune helped out quite a bit.
 
#9 ·
nitrous makes some mean torque. was your bottle pressure around 950 or so? that would leave some power on the table as well.
 
#10 ·
afr must be on the safe side.. i figured youd be in the 400 region
 
#12 ·
Not saying u are a liar, but gaining 215 lbs tq is a stretch. i gained 101 lbs on a Zex 150 shot over N/A.
 
#26 ·
i still made more torque with a 100 shot and our motor numbers are the same pretty much (you have 1ft-lb more)

lol well true that..
but naa not you sweet.. right now mine and ur n/a numbers ar 0/0.. unless you got yours done before me:sorry
i will eventually get my other stuff done so i and set time aside to getting mine done.
 
#24 ·
Im not too worried about it anymore though. I have a Termi motor waiting to be put in my car and then i wont have to worry about this motor.
 
#25 ·
lol well true that..
but naa not you sweet.. right now mine and ur n/a numbers ar 0/0.. unless you got yours done before me:sorry
 
#32 ·
I want to throw about a 100 shot on it and get it ported and run a 2.81 pulley. i gotta rebuild the tranny first though.
 
#30 ·
i've got a dyno sheet laying around somewhere from my GT with the nitrous. the HP numbers are meh (i've got a zex kit and i think they rate their HP gains at the flywheel?) but the torque gains are amazing :eek:
 
#31 ·
Yeah id really appreciate seeing those. i cant wait to see what i can do with the termi motor. what all do u have done to it?
 
#36 ·
yeah, i noticed that too when i 1st saw the sheet. not really sure what thats all about ? :dunno

possibly a gunked up fuel filter? since then i had changed it but no new dyno numbers with all the bolt-on's since this run.
 
#37 ·
well im running a 150 shot and getting only 100lbs of tq? i think my tune is crap. everybody else is making way better numbers than me with spray. i thought my numbers were good, but now i can tell they are pretty crappy.