Today at the STILLEN open house, Steve Millen put his personal Z on the dyno to prove the power gain.

You guys probably want to jump to
https://my350z.com/gallery/albuq26/acv
to see the pic. Unfortunately I was not clever enough to rotate the pic before putting it in the gallery.

I believe that they said that these were the results based on humidity correction, but this thing spanked every other 350Z dynoed today.

There is also a thread going on in the SoCal forums regarding the meet, and if you want to see some pics, please feel free to go to the top of the gallery
https://my350z.com/gallery/albuq26

 

Uh,

I'm sorry but that pales in comparison to the Procharger.

285whp VS 370+whp ?

 

Actually, it's 308 rwhp, not 285. I think the question here is at what boost level was the car dynoed at?

 

yea wat was the boost level?

 

Steve said it was about 5.6 or 5.7....... about the same pressure as the Greddy TT

 

I think the interesting thing noticed between the Stillen dyno and the procharger centrifugal blower is the torque curve. The roots type stillen blower has a flat torque curve...it is at or around max torque from the start whereas a centrifugal blower torque curve by nature of the centrifugal sc builds up. With a redline of 6600rpm, i think one has to decide if he/she prefers greater lowend/midrange torque with a sacrifice of topend power (roots blower) or much higher highend power (centrifugal) meaning you have to drive at or near redline all the time like on a superspeedway for max gains. I am apt to believe that V8's are more appropriate for the centrifugal sc because of higher baseline torque at lower rpm that compensates for the sc torque linear gain while maximizing topend hp gains (though you have to wonder why Saleen, Roush, and KenneBelle prefer roots/screw type blowers). I suppose we'll have to wait for the procharger results and dragstrip numbers for a fair comparison on the Z.

 

Jimster716. You took the words out of my mouth. I have had mustangs with both style blowers. I think for our cars the root styleblower is the way to go.

 

unless they come up with a strut bar to fit around the supercharger, the stillen is of my list

 

You noticed that too...... I hate the hood that stillen had.... The only one that I saw that was even remotely nice was the Full Carbon Fiber one piece. They had a few nice things on display like Volk wheels and some brake kits.... the raffle they had was complete sh*t though, pissed me off. They let everyone enter, but whenever they drew a name of someone who didn't drive a Z or a G35 they tossed it away and drew til they got someone driving a Z. Then they made fun of my car when they drew my ticket. (I drive a Red 2000 Grand AM GT) Like there weren't people there who don't want to buy a Z or something.....

 

I will give Stillen credit... the kit was nicely done and has lots of potential.... I am looking to purchase a 350 in less than a year.... and I might just go with his kit..... It comes with a warranty and Steve said an Intercooler was in the works and would be released soon. If you buy one of Stillen's hoods (that is all one piece instead of the crappy cutout w/ seperate cover) it will give your Z a very distinctive look. He did say one thing about the Z that suprised me..... the ECU being very tricky and all, he said that a carefully broken-in engine was a must, And due to the way the computer operates, a grounding kit is the only mod to do early unless it is purely cosmetic.... Steve Millen went on to say that the ECU finalizes its setting and settles down once you put about 5000 miles on the car. After that serious bolt-ons and other mods would have fantastic effect on the car. Put on their super charger (especially with that intercooler) and couple it with a good exauhst like maybe the Borla True dual would make the Z really really quick.

 

I was in front when they ran the dyno. I overheard the driver telling the other mechanics that he wanted to do one more run but the car was overheating.

 

What warranty does this come with, you this Stillen Supercharger won't void the factory warranty?

 

I am not sure about the factory warranty, but the s/c itself is covered by some company out of Chicago. I couldn't hear Steve so well when he was talking about the supercharger, but I think the warranty only lasts one year.

 

Actually, what was said was that on the 3rd run there was some heat soak and 20deg higher coolant temp so the dyno run would probably be less. ...and it was...

 

I think the optimal type of S/C would also depend on the type of racing you plan on doing.

For a road course, where you are pretty much always in the high RPMs (by this I mean 4000+), the centrifugal type is probably the best. You can take advantage of the packaging and efficiency benefits, and are not badly affected by the lack of low end output (although the ATI Procharger still puts out way more torque than stock even at very low RPMs).

For a drag strip, where the launches are critical, the greater lower end torque of a roots or screw type S/C might have a benefit.

I personally like the looks of the positive displacement types (reminds me of Road Warrior) but would rather purchase a centrifugal type because I prefer the high end power.

-D'oh!

 

I would say just the opposite. Drag racing is much more about the top end of the RPM's than road racing. Drag racing is nothing but redline and drop, redline and drop. There is always enough power at launch, having 500 ft/lb in 1st gear isn't what you need.

In road racing, the revs drop lower, you are not alway 100% in the top part of the rev band like dragging. If Im going through a turn at 4500 RPM, Im not gonna downshift to raise revs to 6000. In raod racing, low end grunt is great for exiting turns.

Mark