I'll post whp once i get it on a dynojet, right now i only have numbers from a mustang dyno that runs unusually conserative, they say it runs 20% lower than dynojet.

Come on man, Those are "REAL" My numbers are on a mustang, :tiphat:

At least to me dynojets are inflated number, Just IMO

ok fine, 391WHP / 308WTQ

The tune i have, and i quote my tuner, is a "safe" tune, so if settings were tweaked they could get more out of it but would put me on the edge of the safe zone :tup:

EDIT: plus it's hot as balls down here!!

looks about right. Thanx, :tiphat:
Same as what I made,

This whole thing is now on hold, LONG STORY :(

I don't know how to compare the cog setup to the pulley set up

Like what cog numbers = 3.12 or 2.95 ect
Or what's the smallest you can go on the cog set-up I want 15-16psi once all is said and done

I should not us psi I guess let's just say I want a good 500 to the wheel


And what happen why it's on hold

although the blower can handle higher psi, the intercooler is not adequate to disapate heat above 12psi. If you want the cogged pulley part numbers i can send them to you. But be advised, it's not as simple as removing the old ones and putting these on. it may require some customization like spacers and small adjustments in addition to requiring a re-tune.

Man i just read this entire thread ..i was hoping to see the outcome and base my decision on whether or not to go FI off of your results

For the reasons why Osiris said the Dealer can not figure out how to set up the pulleys there was alot of back and forth between them and I , Pics and what not, There are saying the belt wants to walk off??? Idler has to not be set up right and they did not install the heat exchanger( Said they cant) so I'm going to pick the car up today and either finish myself ( Which I should be able to) or send it to my tuners on Next Friday VIA tow truck, I just how I can drive the car home, 45 Mins ?

Pretty much not a happy person right now, :(

The stock Stillen pulley is 3.12 the smaller pulley 9 pound you have is 2.75 that's pretty small. That's the reason I did the cog pulleys when I had the kit better grip plus boost comes on sooner ,even better than the 9 pound pulley . Since you have the T trim you would need to switch in order to take advantage if the blower it self . The thing that concerns me with doing this is all the other mods you have to do to the kit I it runs hot . This is the reason I sold mine with my built motor .

I fully understand i called stillen and they said they didnt know the pulley size which i find hard to believe. its not hard to measure one that is not on a car

Sounds like them. Wouldnt tell me anything either, Car went to my tuners on Friday night on a flat bed. Should have something this week,. :/

The pulleys available will be:

2.62"
2.87"
3.12"
3.25"
3.33...ect

These are right from Vortech, so unless it is a custom pulley, it won't be 2.75".

Also, looking at the spec/flow of the V3 supercharger 500whp+ should be no problem at all with an air/air FMIC. I would get rid of the Stillen water/air cooling system and go back to the OEM plenum. That way you can put the MAF sensor in the proper location, and have a solid S/C kit capable of solid power.


A quick search...

Stillen uses a Vortech V3 head unit: 1150cfm (for an Si, and 1050cfm for the SCi)
GTM Stage II uses a Rotorex 38-91: 1075cfm (I think advertised as Stage II 600hp)

So an educated guess suggests that with the air/air FMIC mod, the Stillen kit would make 600hp. At least this time Stillen picked a good supercharger to start with vs. the horrible decision they made with the 350z.

Thanx for the info, I'm sure you guys are working on something ???

I havent had time to go see sasha yet, My business is been balls to walls for the last 3 weeks. Its only going to get worse, as our weather is changing and everyone wants newtires/winter tires put on.

Sasha, hows sunday looking for you? you busy?

Stillen makes there own pulleys in house and the pulley they call a 9 pound is smaller than the 2.87. The reason I know it's smaller and I am 100% sure about it is I had a 350z with 2.87 pulley that I had sitting around. Now it was a 6 rib and the Stillen was smaller. Now I might be of in what I measured it could be 2.70. Vortech does sell a 2.70

2A038-270 | Vortech Superchargers

Another thing to point out is the pulleys that Stillen use are 7 rib not 6 rib like the ones you just listed witch would go for a 350z.

Now Sasha make a front mount for that Stillen that you have near there I would love to see it.

Will be nice if you get over there on Sunday, Would love to see what he comes up with :)

Glad you been busy, EXtra $$$ is alwasy nice,

Drop the car off leave it, let Sasha work his magic :tup:

So Kazien already fixed the belt issue( yesterday) was WAY to tight. So much that the when the relaesed to the proper setting it hit the head( Yes Cliff) the dealer did not do it right, of course, AN the torched the bearing in the idler pulley, I need another one :(. The rev'd the car up pretty good on the lift and did not get any belt walk, They will be removing the bumper today an installing the heat exchanger and MAF's then off to the dyno tomorrow or Thursday we hope.

Sasha contacted me, i'll be going to see him sunday!

ANMVQ, im pumped to see what u put down!!!
If your belt/pulley assembly works out, i need some part numbers?!?! lol
MOARRR boost

Is your warranty voided by you adding those parts on the stillen sc? And at the dealer?

Stillen yes dealer no, Becasue again they installed the stuff, But the SC is warrentied from Vortec for 1 year, Not sure they ( Vortch ) know about the pulley changes, I got those from auto anything.

no prob on the part numbers, I have them my desk top( PC) :tiphat: I hope to see 13-14 PSI and not go BOOM, KNOCK ON WOOD :ughdance:

Better work out, :/

Even with you adding parts that weren't right out the box?

Sounds good told you it wasnt hard very easy to do the tech at the dealer was just lost. I cant wait to see your result's I really hope it works out just watch the temps.

Once Sasha gets you a air to air front mount on Maf's in a blow through location we all can see what the blower can do.

Yea you telling me, about the tech being lost, LOL AH!!!

out of the box for who? Stillens warrenty is gonzo, Was the second I dump their 40WHP increase tune, Vortec will warrenty it because they rebuilt it and did the upgrade, The dealer will keep it becasue they installed the kit and upgrades, or tired to anyway. As long as I do not beat the crap out of it they will cover me, Told me as long as its not from abuse, I should be good.

Is the tech any good at what he does? Or just some kid out of school


Not a bad deal with your warranty

young but cerified, LOL Whole reason I went Stillen, Dealer warranty for 60k, and the car only has 15k on it, I only drive it a few times a week, LOL

What do i have to do for the boost to come on sooner, different impeller?
i want 9-10 psi but just want the boost to come in early. any thoughts? 928 impeller?
also, what about the impeller shims?

You would have to copy my cog set up ANMVQ and a few other's have copied it already.The boost will come on a lot sooner with it you will have a better powerband with the cog pulleys.

ok i am still having trouble understanding why the 9lb pulley is so small
the v3 can crank out up to 17psi and if its using a small pulley to start then what pulley is going to give me 15-16psi or close to that
i mean theres like what only one pulley smaller then 2.75

i know our heads flow well but i mean with the v2 and 2.95pulley i was seeing close to 550rwhp and 13.5psi on my mustang
i will figure it out i guess

The pulleys that Stillen use on the back of the blower and Jack shaft are big this slows the blower down.This is the reason why people have a problem making torque and Hp with the blower. The Stock pulley that comes with the kit is 3.12 that's not small at all either.

This is the reason why I put cog pulleys when I had the Stillen kit because I knew the blower was spinning slow. It is also the reason I made 465 Whp 360 TQ on a dynojet with the bigger pulley that came with the kit. The only way to get the blower to even try to crank out more psi is to use the cog pulleys that I used. But doing so you have to change a bunch of other things with the kit that have been talked about already.

I hope this helps you understand better.

+1 for what Mr.Squezze said, You can change the cogs upgrade the impeller to make more boost and sooner, But you HAVE to change the MAF's ( You will run out at 6500), You also will have to upgrade the injectors-the Stillen 600CC's wont cut it, and you will have to shave part of the head( Idler is going to hit it). An after all of that we still dont know what WHP you will make, My car has not hit the dyno yet. Mr.Squeee made 465 and ran out of MAF, I'm hoping to make 20 more WHP then he did. He was also @ 11PSI with TP's I have stock cats so I'm proablly going to see + 2 PSI. I also changed the Heat exchanger and the BPV.. As soon as my car hits the dyno and I get the numbers from my tune I will out them up on here. Should be tomorrow I hope.. I havent seen my car for going on 10 weeks. :(

Is it worth getting the impeller and shims from 928 motor sports? or just do the cog set up?

just got a call, Fingers crossed for the dyno tune this afternoon.

The Impeller works, I read a ton of stuff on it, Mr.Sqeeze made power with it and the cog set up, Not sure how much soon the PSI comes in but the 360 WTRQ is nice, I got mine from Vortec cause it was there for the warranty work.

i didn't need to upgrade my maf's or injectors.

With the cog and impeller upgrade? Squezze did, Ran out of MAF @6500. The injectors will work but 90-95% duty cycle. Maybe one of the other guys will chime in on the duty cycle also.

i did the cogs, but not the impeller.