[99mustanggt27]

so i have a 1999 mustang gt, theres no real dyno shop around here for me to have easy access to so i was wondering if ya'll could throw me a guesstimate of my rwhp and torque, i have no big mods just mostly boltons

i have 3:73 gears
PP 75mm tb
PP upper plenum
CAI
Performance underdrive pullies
Throttle body spacer (doubt this makes a difference just adding it in since i have very little done and feel bad
mmm BBK O/R Hpipe
My cars tuned aswell, havent messed with my programmer since the guy before me had just tuned it, its a part #41005 hypertech 3 , not sure what its set on or how it works really, im not sure if it ones of the tuners that has 3 set tunes, for economy, street, and track, but im guessing its on street,
thats about all my bolttons and my cars a 5 spd, prolly low numbers but i figured its better than being stock

[00mustang00]

probably somewhere around 230rwhp and around 270rwtq

[sharkbait]

I would say 230-240 rwhp
and about 270 tq

[sl04gt]

245 hp 285 tq

[Smoothgrandmama]

235hp 280tq

[99mustanggt27]

idk if this sounds crazy but the guy who i bought my car from said the car put down 260 rwhp stock, i heard some ppl saying they got this in a stock manual gt, it depends on the car i guess they all differ, with that sound where could i be at possibly?

[maverick2000]

My car with a PP throttle body/plenum, JLT, SCT, prochamber, and weld in flowmasters put down 250 WHP and 280 TQ.

[00mustang00]

no it puts 260 at the CRANK stock not to the wheels.

[sl04gt]

Originally Posted by 00mustang00 no it puts 260 at the CRANK stock not to the wheels.

+1

[red01]

My car with intake, TB, plenum, plenum spacer, pullies, exhaust and tune made 254/292. car is a 97 but has a 04 PI motor in it.

[Jobra]

253 / 286

[Eagle2000GT]

Originally Posted by 00mustang00 no it puts 260 at the CRANK stock not to the wheels.

+2 Its somewhere around 225 rwhp through a manual transmission and 208 rwhp through an automatic.

[Blitz34]

15% parasitic loss for manual and 18% for an automatic.

So at 260hp and 302tq at the crank, thats 226rwhp/262rwtq for a manual, and 220rwhp/256rwtq for an automatic stock.

[Blitz34]

And to the OP, I would rate you at around 245hp/285tq to the wheels.

[Eagle2000GT]

Originally Posted by Blitz34 15% parasitic loss for manual and 18% for an automatic. So at 260hp and 302tq at the crank, thats 226rwhp/262rwtq for a manual, and 220rwhp/256rwtq for an automatic stock.

I've read about stock dynos of automatics at 208-213 rwhp. And some say that a manual has 12-13% parasitic loss. My experience says its a little more. But they were all on a different day, different dyno.

[Blitz34]

I'm basing my given numbers off an average of what I have heard. Some would say that an auto has a 20% parasitic loss which would be closer to your numbers. I've heard of it being 18% so, being as I have an auto, I'd rather believe my car has 220hp than 213hp.

My car is mildly modded though so I'd guess I'm at 225hp/265tq to the wheels.

[Eagle2000GT]

A cold day at sea level on a Dynojet will give you the best numbers.

[aluv4speed]

Originally Posted by sl04gt 245 hp 285 tq

IM with STAL

[I8ACMRO]

Originally Posted by Blitz34 15% parasitic loss for manual and 18% for an automatic. So at 260hp and 302tq at the crank, thats 226rwhp/262rwtq for a manual, and 220rwhp/256rwtq for an automatic stock.

Your math is off some. The results are actually 221rwhp/256.7rwtq through a manual, and 213.2rwhp/247.64rwtq according to your parasitic loss percentages.

[Blitz34]

Originally Posted by I8ACMRO Your math is off some. The results are actually 221rwhp/256.7rwtq through a manual, and 213.2rwhp/247.64rwtq according to your parasitic loss percentages.

Eh, Internet calculator for ya. 260/1.15 and 302/1.15 for the manual is what I did. Prolly did it wrong trying to skip the subtracting part. Did the same for auto but with 1.18 instead.