Carl Fausett

If you have been following our Facebook feeds, then you know that our Stage III kit development has been moving along for over 2 years.

As this kit represents the best of everything we have and can do, I wasn't going to rush it or release it until after it had been on the road and running well for a while. Add to that the fact we first built it with a Raptor RH supercharger, tested it, didn't get the numbers we w anted; took it back, redesigned to use the ProCharger P-1SC-1,, tested it, ,didn't get the numbers we wanted; took it back, re-designed for the ProCharger F-1A supercharger - got the numbers and the durability in the package size we wanted. It took a while.

Cut to the chase 1: We did well over 500 HP at the tire and over 600 HP at the crank on an otherwise stock 1991 928 GT. Dyno charts posted below.

Your experience with this kit is likely to show even higher numbers, as 1) my test mule has 216,000 miles on it and the engine is good, but not great. A tight engine would post even higher numbers. 2) all our numbers come from a eddy-current dyno (Mustang) and not a inertial-drum style dyno (like a DynoJet) which often yield higher numbers.

But it really doesn't matter so much at this level. As our video shows
http://www.928motorsports.com/productdemos.php
you can light up 295/35/18 rear tires in both first and second gear, third too if you have an abrupt clutch foot. I can assure you - its plenty!

Cut to the chase 2: It isn't a cheap kit. This is our ultimate kit. We already have kits for the 928 starting as low as $4695
http://www.928superchargers.com/

In this kit we include everything (new fuel pump, injectors, adjustable fuel pressure regulators, fuel rails, SS braided lines, intake spacers, intercooler, and more and more - even a new injector wiring harness and new spark plug wires if you add on the optional Electromotive engine management. Very very complete, very thorough.

That brings it in at $12,760 for the Base Stage III kit and $16,060 with the optional EMS.

There is a LOT to say and tell you about this kit - please click on this direct link to read more: http://www.928motorsports.com/parts/...harger_kit.php

Carl Fausett

Here are the dyno charts.

The third line on the graph chart is boost pressure.

Wheel HP: 523 HP at the tire. After temp correction, 516.6 at the tire.
Using a 15% drive-train loss (manual trans) that's 615 at the engine before, and 607 BHP after.

17prospective buyer

And let the hater flaming begin...

Leon Speed

Why?



Looking good Carl, that car in the vid hauls *** - no other words to describe it.

17prospective buyer

Well usually he gets some crybabies because something isn't "just so" on his stuff.

BC

And you can keep going if you switch to Ethanol.

AO

Carl,

Impressive numbers. Are you running this with a stock clutch?

Avar928

Normally the speakers on my laptop are pretty dull so I have to really crank the volume to get a decent listen but HOLY CRAP that dyno vid really tore up my ears. I wasn't expecting that. That is one nice sounding GT when blasting. She sounds like an airplane when driving up. Love that sound. Reminds me of the 997.2 Turbo S. Intoxicating.

Very nice product. Makes me wish I had an extra S4 laying around to play with.

SeanR

Really good numbers, very impressive.

Avar928

There's no way to fit a traction control system on the 928 to reduce wheel spin, aside from maybe really sticky tires? (I have no idea)

Carl Fausett

This car does have one of our upgraded single-disk clutches. Holds it just fine.

This car does have PSD - and it helps, but I was laying twin patches left and right.

Here is a before-and-after pic of my rear tires. Like I said, I really put some miles and some pounding on this kit before I said "it's ready"

Carl Fausett

Thanks for watching the video. Speaks volumes for the kit.

Answers questions like "how loud is it when it drives by?"; "how loud is it at idle?"; "can we still carry on a conversation in the car or is it too loud?"; "whats it like to drive?"; etc.

Link to video: http://www.928motorsports.com/productdemos.php

BC

There is. You need VSS (Vehicle speed sensors) on the wheels, and an ECU that can retard timing and/or take fuel out of cylinders completely.

Bertrand Daoust

Yes, very impressive numbers.
Well done.

Rob Edwards

Sounds like God's own hairdryer. Love the video, 'specially the wheelspin demo... Nice work Carl!