For your review.....

http://home.att.net/~jroal/qanda.html

http://home.att.net/~jroal/blown.htm

 

.......and here is a supercharger/turbo comparison chart for everyones review....

http://www.sandsautomotive.com/whipp...son-chart.html

 

that last link seems little biased to me. it even looks like an advertisement for a twin screw blower..........

 

yeah, I have not found a 100% unbiased piece of forced induction documentation yet........well, except for mine.....

 

I like how it shows a twin screw is more efficient than a turbo.

Or how your torque curve is worse with a centrifugal blower.

I'm making 360+ lb-ft at 2600 rpm with my ATI - like I was making anywhere near that when I was NA...

 

......another article about the basics with links....

http://www.lextreme.com/turbo.html

 

Don't remember seeing your graphs, but on my 4.6 I have a ProMod 85mm with 30# injectors and the combo seems to be fine. Getting a flat 11.5/1 A/F ratio all the way to 5,550 rpms and both the Maf and Injectors have plenty of room for growth. The tuner said it would be unnecessary to go to 42#'ers or the 90mm, at least for my setup

 

........another link to an article, entitled, Turbo vs. Supercharger

http://www.superchargersonline.com/content.asp?ID=19

Ultimately, we will come to the conclusion that, it is not a "vs." issue at all. It is about what you like and can afford.

 

Data is in black and white on the dyno sheets. He ran it to 5,700 rpms before shutting it down and the A/F was still a constant 11-11 1/2 to 1 (went with a "safe" tune). I asked him about the injectors, if they were sufficient, and he showed me the voltage reading off the MAF as well as what the injectors were doing and both were far from being maxed out. The only time we ran into problems was when I tried tunning the infamous Bazooka Pulley and this was because the fuel pump was insufficient. If I had wanted to continue it meant replacing the Allen supplied pump for a higher flowing one. He actually suggested going with a Focus SVT pump as a cheap alternative. However, decided to forgo the Bazooka in favor of the 9#er.

Further proof is when Flatsman had his Magna on. He was using a 7 and a 9# pulley and was still using the stock injectors and MAF. Made close to 290hp and didn't have any problems with his tune (Done by Troyer).

 

..........here is a link that advertises for THIS site and has a truck supercharger buyer's guide!!!!!!!!! Enjoy! and DECIDE for YOURSELF!!!!!!!


http://www.truckinsuv.com/tech/0106suv_supercharger/