just wanted to thank everyone for their help. i think ive decided on the stillen...now the question comes down to stage 2 or 3. i might be able to get a stage 2 for 2800 from a member on here...

 

well there's actually less parasitic loss at low rpms where it doesn't take as much work to spin the blower less than at high rpms where it takes more work to spin the blower faster especially as the psi or backpressure increases which make it harder for the extra air to leave the blower and go through the engine

The blower is spinning and sucking in more air. Even with the 3.33 pulley, at 2500 the blower is spinning at 17464 rpms. With the 3.12 pulley, it's 18640, and the 2.87 pulley spins the blower at 20263 rpms at 2500 rpms

that's plenty of rpms to generate power and according to compressor graph for the SC trim with 3.5 liters, it's right there near it's peak efficiency. It just so happens that you can spin it even more up to redline to make even more power

at extreme low rpms, you're right it kinda does act like a really good short ram intake. It can be felt every time you take off from a stop. Being NA, you won't feel that extra power, but the car will probably rev up a little faster

Either way there's a ton of dyno graphs that all show the vortech making 20-40 more tq at 2500 rpms than NA depending on their pulley and engine/exhaust

 

Stage 3 [ I believe ] is just a smaller pulley , larger 7th injector , and a tuned SS box . You maybe able to send in the SS box to Stillen have them retune it , buy the pulley and injector all before doing the install . For $2800.00 you are getting a good deal . Good luck !!!!

 

Dont waist the time with stage3 just either get stage 2 or stage 4.All the stage3 is is a very slightly smaller pulley and mine ran to lean up top for my taste.Stage 4 gets a smaller pulley,larger 7th injector,different fuel pump and a remapped ss box.

 

i know you have made up your mind, but why not add a suggestion.....ATI PROCHARGER!!!!!!!!!!!!!!! But whatever you choose, i guarantee you'll have fun with it, so good luck! Also i was soooooooo close to going stillen, until i researched and learned about no breathing mods, a new weird hood, and the low hp it puts Cool sound and decent torque tho.

Note: I payed $300 re-stocking fee after ordering my Vortech and canceling it because of the bad batch situation that has been going on, yes i know vortech has made a letter admitting it, but problems are still occuring I suggest wait till mid 08 for a vortech.

 

Thanks ..I didnt know if it was stage 3 or 4 that got the upgrades other than the pulley .