[RedFire04]

Alright, I have a 04 Mustang GT. Ive researched superchargers and turbo's for a long time now, I even built my own turbo kit on my 90 mustang, so I pretty much know the benefits and downfalls to each. What I dont know is if lets say you have 2 identicle 04 GT's one with a procharger (8psi P1sc,velocity kit at jmschip) and one with the kennebell (9psi 2.1L) which would win in the 1/4(excluding traction issues)? Which one would most likely beat a 04 Cobra with lets say 430 rwhp? Iam pretty sure the kennebell would be most fun to drive, but iam sure I would be pleased with the procharger as well. I also love the kennebell whine. The procharger kit iam looking at is the one at jmschipcom which is listed for $4399 where as the kennebell kit is listed for $4999. It seems to me the procharger kit is the better value for all you get in the kit. But what do you guys think?

[GreenFaleen]

KB is an overall better s/c. The procharger is nice but over all the roots style blower is a better design.

plus with the KB your s/c will have more displacement than most hondas

[Vabeachmustang]

Since i'm Procharged I vote for the Procharger!!! KB's are pretty much instaboost where as the centri gains higher in RPM range.

[droppedbass87]

well i thought the bring heat more under the hood i hear that from everyone ikn here..the roots i mean..and can you have a intercooler on a roots??i vote procharger cuz they bring more power...

[matrixpuba]

if you talk to anyone who has had drove both, the kb may be fun and get you out of the hole, but the procharger has an insane top end charge and will beat the kb car.

[WAVEBYE]

the KB build boost quick but they also create alot more heat. whenever you compress air it heats up and the faster you compress it,or the faster you build boost,the hotter it will get.
if you look at most pro drag racers,most or all of them use centifugal blowers. not saying there aren't any that don't(use KB) but i have been around drag racing a long time and mustangs for the past 12-13 years and i have yet to see one with a roots/screw type. i don't mean weekend warriors.

[RedFire04]

so the procharger would be most likely to beat a mildly modified 03/04 cobra?

[Haggis13]

Originally Posted by RedFire04 so the procharger would be most likely to beat a mildly modified 03/04 cobra?

My friend has an 03 SVT Cobra, and I can take him with my KB Fox no problem. If a twin screw KB makes 9 PSI, it makes 9 PSI from 2000rpm right up to the redline. That's a much larger and flatter torque curve than a centri motor will make.

As far as heat goes, my engine bay doesn't get any hotter than it did without the blower, and even if it did, the 2.5" open cowl I'm thinking of buying would solve that issue.

+ the sound is fracking awesome.

[Drgnracin72]

centris will go faster in the 1/4 mile than a kb

[RedFire04]

What about the chip that comes with the KB kit, Is it pretty much right on? Does anyone know if they offer a hand held programmer instead of the chip, i believe i would feel more comfortable with the programmer so that i dont have to send a chip off and park my car everytime i do something to my car.

[Haggis13]

Originally Posted by RedFire04 What about the chip that comes with the KB kit, Is it pretty much right on? Does anyone know if they offer a hand held programmer instead of the chip, i believe i would feel more comfortable with the programmer so that i dont have to send a chip off and park my car everytime i do something to my car.

Can't help you there - their kit for foxes doesn't come with a chip. Right out of the box, for a fox, all you need is a bigger fuel pump and a 160 degree thermostat. Once you start messing around with other things, you need a tune and a burned EEPROM...

[RedFire04]

just out of curiosity, how much boost were you running when you beat that cobra and do you have any engine mods?

thanks for the help everybody. Iam leaning more towards the KB but iam still not 100%. It seems like it shouldnt be this hard to decide..lol

[bransdaman78]

I feel like some people arnt understanding that power doesnt allways equal speed, i.e. the cobra cobras or pullied cobras they may put down as much or more than a vortech'd or procharged car' but the power band on the m112 is not like that of a centri blower, thats why probly 70-80% of the time a centri blown GT around that 400 rwhp range will beat cobras, and like some of you have said the sweet spot of a centri is basically 3000-3500 on up as to where the sweet spot on a m112 or a kb (most cases) is 4500 and under, yes I have seen the advertised dynos of the newer KB blowers, but the times dont see to have changed much, and in most cases the new KBs seem now to only be matching the performance of their centri counter parts, if not still a few ticks off. Of course all of this changes with make and model, but I am a firm believer that the centri is a better setup - I mean after all it is a belt driven turbo, IMO centris are the bestup - even better than turbos - go look at blowers like the f-1r or Ysi and I think youll see what I mean, but its just my opinion - I could be wrong

[Haggis13]

Originally Posted by RedFire04 just out of curiosity, how much boost were you running when you beat that cobra and do you have any engine mods? thanks for the help everybody. Iam leaning more towards the KB but iam still not 100%. It seems like it shouldnt be this hard to decide..lol

Last summer I had 8 PSI, 3.73 Gears, the Tremec, a sticky set of Nitto's and my driving skills...

[Drgnracin72]

i also say the centri is a better setup. youll go faster with it

[RedFire04]

I wish I knew a couple of people who had both setups so i could see personally which one i liked the most. How much faster would the centri be in the 1/4? If it would be close to 1/2 a second quicker that would definately help make my decision..

[Haggis13]

Originally Posted by RedFire04 I wish I knew a couple of people who had both setups so i could see personally which one i liked the most. How much faster would the centri be in the 1/4? If it would be close to 1/2 a second quicker that would definately help make my decision..

Half a second is a lot of time. If two cars are putting down the same RWHP, the difference in the quarter mile would probably be minimal...

[RedFire04]

Half a second is a lot of time. If two cars are putting down the same RWHP, the difference in the quarter mile would probably be minimal...[/quote]

yeah i know, i was just being a lil sarcastic. =)

[bransdaman78]

What people commonly confuse:

RWHP does not equal faster quarter mile times in all cases:

i.e. 600 rwhp cobra ( pulley, 75 shot nitrous, stiegmeir upgrades ) vs. 600 rwhp f1r procharger = prochager whoopin arse !!!! ( if you can get the power to the pavement in both cases !!!

[RedFire04]

Well Ive thought about it, and contacted Kenne Bell, and the conclusion ive come up with is the fact that ill be driving the car alot more then racing it, so the fun factor is the most important thing that i should be looking at, so iam going the Kenne Bell route.. Thanks for all the help guys.