03sonicgt

Alright guys, I have an 03 GT. I bought the car with the following mods, forgive me but I do not know the exact brand names becuase the dealership did not have any info on that stuff. I have a catted x-pipe, with flowmast cat-backs, underdrive pullies, a cold air intake and a mass air flow sensor. I think that I am roughly around 300 hp at the crank. WHat do you guys think? Thanks - Kyle

M1ke

id say thats pretty close.

72MachOne99GT

hey kyle, sounds like a nice car (and if its sonic blue, thats a nice color)

but i would say that youre probably a tad shy of 300, maybe high 280s? there is no way to be certain for sure unless you have the car dyno'd and then use the equation for % loss

i had a post like this awhile back, adn in all reality, if youre looking for bragging rights, just use 300, its a safe bet cause most people wont know the difference

if you want to be sure though, dyno and add in the drivetrain loss

good luck

racer02GTstang

i would think that is mid 280's to low 290's... but im not to sure... i'd say somewhere around 257ish rwhp?

Matts00GT

Well all I have is black vinyl inserts and I'm at 407 rwhp. Oh nvm not the honda forums.

blueangelfightr

Your probally in the 280's or so. Maybe 290's, with a good tune you can definetally be at 300.

JoeyD

260 to the wheels (RWHP)
and about 290 at the crank.

^yes like blue said... with a good tune... 300 at the crank.

nice

ZW99GT

CAI, pulles, xpipe, catback. 260rwhp? Jdan used to be there with his full bolt on GT. I think this guys may be 250rwhp untuned. How much do u guys think this stuff adds?

nanaki

considering i was at 239.8RWHP with just a catted X and catback, i'd say no more than 260RWHP. 240 + another 10 or so for pulleys, another 6-8 for intake.

red2k1gt

Id guess 255 rwhp