[Myslowstang]

I want to get a supercharger for my 03 mustang gt but the problem I'm having is choosing which one would be best for me. I want to know what yall think and just to give you an idea on what I already have done, here is a list of the things I have and other info. I got a JLT 4" intake with a 90mm MAF, 75mm TB, intake plenum, upgraded intake manifold, underdrive pulleys, 4.10 gears, full length headers, off-road h-pipe, and a slp catback. It was dynoed at 300rwhp @ 5250rpm, not sure how accurate that dyno is but that's all I have to go by. My car is convertible so is heavy, just under 3900 lbs. My best time is 13.3 @ 103mph on Nitto DR 315/35R17.
After looking around I'm thinking that either the ProCharger stage II or the KB 2.1 would work best for me as I'm looking at price and quality. I really can't spend more then $5K and both are about $5000. I've only heard good things about both companies. Also, would I still be able to keep my underdrive pulleys with the supercharger and just use a smaller supercharger pulley to get the psi I want or would I have to put the stock pulleys back on? Also what gears would be best with my stock trans? Are my 4.10s going to work well with a supercharger for both track and street or are they going to be too short of a gear? Should I pull them out and put in 3.73 or 3.55s? The only reason I'm asking about gear selection is because I'm redlining it in the traps in 4th so I'm thinking that I'm either going to have to put on a bigger tire or change my gears because we all know 5th gear sucks!
Thanks for any and all input!!

[PsnSnake_19]

i heard its better to have 3.73's for power adders?? and i would get a kenne bell 2.8 liter if i was rich but i might end up getting an eaton 2.2l the ones they put on cobras

[Scott2001GT]

4:10s will work regardless. Keep em and see how you like them.

The Procharger will be more of a top end blower and the KB will be a torque monster.

I have a Procharger on for 3 months and I didn't like it so much. It was fun but not my thing. If you do get a Procharger GET A D1SC blower NOT A P1SC.

IMO between the both I would go with the KB.

[1999cobra92]

have you looked in to torkteck they started making superchargers for the 2v awhile back

[saxmanJJ]

Hey Scott, just curious but why didn't you like the Procharger?

[saxmanJJ]

I have a Vortech V3. It is a blast if you really rev it out, but below 4500 rpms it doesn't really pull that hard. The car does progressively keep pulling harder until 6000 rpms in my case, and the power really doesn't drop off much all the way to 6500 rpms where my rev limiter kicks in. For the strip it is perfect, because it is easy to launch the car with (not too much torque at the launch) and it pulls hard up top. I've managed to dip into the 11s at the track.

For the street the KB would probably be more fun with the instantaneous full boost (and more likely to get me in trouble knowing myself).

[Myslowstang]

I have looked into torkteck but I haven't been able it find a price on them... Does anyone know how much a complete kit is for a 99-04 gt?
And what I'm getting from eveyone is that since my car is more of a street car with occasional track use, yall think I should keep the 4.10s and get a kb. Cool, thanks!

[Scott2001GT]

Originally Posted by saxmanJJ Hey Scott, just curious but why didn't you like the Procharger?

It just didn't pull like I thought it would. I mean dont get me wrong it was fun and it did pull up top to help my 2v breath but didn't pull hard enough.

I made 380rwhp and 376rwtq BUT that was at 5800rpms..I set my car to shift at 6000. So I was at full boost(10psi) 200rpms before redline.