The mods that matter... (not counting the Nitrous Express kit installed because that's not a constant thing so I'm not taking it into consideration at this point);

Steeda CAI and Steeda Highflow intake tube
SLP LM (i saw in one thread it lost 1-2hp but gained it in torque? on a dyno)

Bamachips 91 Octane tune

I'm going to toss on an o/r H pipe soon as well...

will that put me right at 300whp 300qtq?, or will I need a good set of headers to get there?

I figured an average GT makes about 260/260 taking into consideration the base numbers I've seen.. again just an average.

 

With JLT series 2 intake, custom dyno tune, offroad H, and Corsa mufflers my car made 296/316.

After adding pullies, delete plates, and 4.10 gears I'm at 303/318. I've been told that the gears probably cost me around 5 horses on the dyno.

 

Yep you should be real close...Like tom said pullies will probably put you at 300

 

I'll guess 290

 

I'll guess 292.
When are you getting it dyno-ed, and what is the prize if I guess right.

 

gears rape the dyno number, but jack the butt dyno feel.

 

Gears are well worth the "loss" of power on the dyno!

 

+1

But im still not sure if I wanna go with 4.10s or 3.90s

 

5 speed manual? 4.10s
5 speed auto? 3.90s

 

291hp 308tq

 

I can live with numbers around that....

and if Nitrous Express is correct and is measured at the wheels... a 100 shot should put me at 390whp??


not bad...

If i do gears.. i'll do 3:90's as I like to do road coarses so i dont need super low gearing because of the speeds reached on the straights...

 

293.56433 hp is my guess

 

4.10s will not hurt you in the straights.

 

Not sure I understand that. Lower gearing should increase the power output on a dyno since it improves the mechanical advantage needed to spin the dyno.

 

Do a search when you have time; there is alot of info that points to the statement that lower gears equates to lower dyno numbers is correct. I've seen it on my own cars personnally; the three shops that have dynos that I've been to have all confirmed it too, FWIW.

 

Okay, I got it now. The reason the HP figures go down is that the dyno software factors in the car's gear ratio when calculating HP.
I wasn't thinking that the vehicles final drive ratio was used by the software. You learn something new everyday!

 

i hear a K&N sticker makes up for it though....

 

I guess I better keep my K&N sticker on my toolbox.

 

about 293

 

If ya want the straight scoop on how much power can be realized from just adding a CAI and a tune to a stock GT ask the programmers that sell the SCT and Predator tuners.These guys know exactly what the GT will do and they will tell ya. The number will fall between 270HP and 290HP max.

They have had their personal GT's on the dyno probably for many hundreds of hours testing different tune stratagies.

The stock GT stick, on a dyno, will put out about 260HP. The auto puts out a little less. There are some folks that claim that their tune and CAI is giving the GT a 40hp or greater gain.............thats interesting.

C&L will tell you that their CAI will put your GT at about 280+/-HP. This number is based many hours of testing in their lab.

To save yourself many hours of reading just call:
Doug at Bamachips
Brent at Brenspeed
Fred at Evolution
Ask them the question.

The stock Mustang GT is one hell of a retro car.........it aint a rocket ship. To make it a rocket ship would cost ya between 10k to 15k. If ya are gonna spend that kind of money its best to wait for a used GT500 to show up.

OR

Wait for the new Dodge Challenger to come out in late 2008 or 2009.