These are the numbers from the Dyno Shoot Out that we performed with Sport Z Magazine. Please note that these numbers are straight off of the dyno charts. The dyno charts get a bit messy to read when all of the lines cross each other. So, this should help. You can see from this that if you are looking for everyday driving performance in normal RPM ranges - which system provides the best performance. If you are drag racing with gears that allow you to operate at very high rpms, or like the peak gains, then the other units will be of interest to you. They each have their merits.


..............Baseline........Stillen @ 7psi......Prochgr @ 7psi.....Vortec @ 8psi
RPM.......HP/Torque.........Hp/Torque..........Hp/Torque..........Hp/Torque...........RPM
6500......228 / 187...........325 / 264...........350 / 281..........335 / 272............6500
6000......240 / 210...........320 / 280...........338 / 296..........328 / 287............6000
5500......238 / 227...........308 / 292...........312 / 294..........298 / 283............5500
5000......223 / 234...........288 / 302...........282 / 298..........268 / 281............5000
4500......204 / 238...........258 / 299...........248 / 287..........245 / 284............4500
4000......176 / 232...........228 / 300...........212 / 280..........212 / 277............4000
3500......152 / 229...........199 / 297...........178 / 268..........178 / 267............3500
3000......130 / 228...........168 / 293...........148 / 256..........144 / 252............3000
2500......105 / 221...........135 / 285...........115 / 239..........111 / 237............2500
2200.......90 / 218............118 / 282..........100 / 234............97 / 234............2200


Reported peak horsepower and torque values:
Baseline:....242.5 hp @ 5800 rpm 239.4 ft/lbs @ 4600 rpm
Stillen:.......338.2 hp @ 6600 rpm 302.6 ft/lbs @ 4200 rpm
Prochgr:.....353.7 hp @ 6600 rpm 300.5 ft/lbs @ 4800 rpm
Vortec:.......344.8 hp @ 6300 rpm 298.7 ft/lbs @ 5900 rpm

Also, please remember that while these results are posted, each vehicle will vary to a certain extent due to OE manufacturer differences, dynos and production tolerances. These run with Carl Merrit of Sport Z Magazine driving each car on the dyno. Same day.

Hope this helps decipher the gains for these systems. The question is where do you want to experience the gains.

 

Mmmm... torque

 

Wow stillen made something good.

 

LOL

 

Alex:

My brother said someone from Stillen dropped by his Infinity dealer in Carlbad from Stillen with a SC VQ35 on the FX35 and it fit under the hood in stock form. Was that you?

Is this SC set up the same one on the 350Z ( I assume) and when will it be for sale? Is it the stage 1, 2, or 3 configuration?

Jeff Wisener - zland

 

Hi Jeff,

Good to hear from you again! Hope all is well. It was me in the sense of STILLEN but it was technically our Nissan / Infiniti Dealer Manager. He services and manages all of our National Dealership Accounts.

FX35 SUPERCHARGERS ARE NOW SHIPPING!
STAGE-1 - 6lb Non-Intercooled (w/optional warranty)
STAGE-2 - 6lb Intercooled (w/optional warranty) & 50-State Legal CARB Certified
STAGE-3 - 7lb Intercooled

Same specs and gains as the 350Z! Our FX35 even baselines at 335rwhp!

Thanks for helping me get the word out!

Cheers!

 

I am suprised that the Stillen didint make significantly more torque on th 2200-3500rpm range. I thought one of the merits of the Roots style sc was gobs more torque at lower RPM than the centrif. units like the procharger and vortech.

 

Well, GQ, that depends on what you are using as a gauge for 'gobs'. We certainly clobber the other numbers. Just look at where the gains begin. I wish I could take you on a little drive. Check out the FreshAlloy Test Drive that we did in the Azusa Canyons. He (Dan Wu) compares the car to a Porsche Turbo. I would never compare the two, but those are Dan's words.

Make it a great Day!

AC

 

GQ - This might be a case where the dyno sheet shows the gains best ( albeit hard to read unless ya go to the SportZ magazine website ). The Stillen torque curve is basically flat from 2200 rpms to 6k. Personally, that's where I spend most of my driving time so I'll be running the Stillen S/C. I've had a Vortech & a Whipple ( old school ) & those R fine kits. I just like the ease of installation for the DIY that the Stillen offers as opposed to a T/T ( & it's awesome mid range & top end HP ). Now getting used to the hood; well, THAT may take a little while!!

 

I'm waiting for the headers to pass smog with the stage 3 SC. 1st I have a few q's.
any new upcomming hoods?
If I blow my engine and want to lower compression,will the SC be able to pull 10+ psi?
What is the max psi?

 

Just PM'd you on this.

Cheers!

Alex

 

The Stillen numbers look good... Wasn't their something wrong with the Vortech kit in this article?

The only thing that keeps Stillen as my last choice is the HOOD... Damn ugly.

 

i know tell me about it.

 

I agree on the hood thing, although it's growing on me. Part of it, for me is the fact more and more Z's are on the road now and I always like to seperate mine from the rest. So like I said the hood thing is becoming less and less important for me. I truly want the best power/reliability/price ratio.

 

I have a pristine silverstone hood with the cf scoop for sale in the classifieds if you dont want to cut your own. I'll let it go for less than the price of the scoop alone.
https://my350z.com/forum/showthread....872#post808872

 

Well, on the table above, i am only seeing an additional 20lbs of torque in the lower RPM range...to me...that is not "gobs" of additional torque. I agree that that torque curve will certainly be flatter than the centrif. units, but i was honestly expecting a bit more...that's all.

 

What are you considering "lower RPM range"?

Here is some quick calculations of torque (Stillen vs. Pro and Stillen vs. Vortec):

RPM...ProCharger...Vortec
6500...17...8
6000...16...7
5500...2...-9
5000...-4...-21
4500...-12...-15
4000...-20...-23
3500...-29...-30
3000...-37...-41
2500...-46...-48
2000...-48...-48

 

opps...my mistake...i was reading the table incorrectly. Yes, you are right...there is signficantly more torque at the lower RPM thatn both centrif. units.

 

No problem! The question of "when do you want your power?" is really fitting for this comparison.

Something that I've seen posted alot but no one has seemed to respond to is the comment that the roots supercharger (Stillen) produce a lot of heat. First, is this true and if so how much heat, and is deterimental to the reliabilty of the unit and ultimately the engine. Also, consider that I live in Texas and our summer months get rather hot. I mean would stop and go traffic here in Texas render a Stillen supercharged Z a-wash on performance and reliability? I really don't have a predetermined path on this, so I'd love to her opinions on this subject.

Thanks!
Scott

 

the only thing all the torque will do in the lower rpm is create more traction problem for us