New 997 SC'ed In This Month's Excellence....
 

Just saw a copy of this month's Excellence Magazine. It has the EVO SC'ed 997 on the cover. Interesting article. The 997 runs a bit over 400 whp. At first the magazine wasn't getting the whp, but afterwards they found that they were cutting off the power about 500 RPM short of redline.

Also, what I found interesting was the first dyno they did on the SC'ed 997S found 450 whp @ 6.5 lbs of boost, but they could not guarantee the longenvity of the engine at that level, so they backed it down to 6 psi, until they can make some internal engine mods.

Great read though. Sounds like these SC'ed 997's are real beasts.

I drove it today back and forth and it's a very nice ride indeed:) Look out for another piece on it in European Car coming soon.. and then Billy's also;)

I would love to know if EVO is going to make a package for the carrera S with lower compression pistons and more boost from the supercharger. I am guessing a package like that would run about 20k though but it would be great to know if they are going to do it for those on the fence between picking up a carrera S now or waiting for the GT3 or turbo because they would want more power.

With lower compression pistons, stronger internals, and more boost 500 whp wouldn't be out of the question.

Hi Sticky, lowering the compression to run more boost has always been a good technique on Turbo cars in particular. You're right though, it would really cost an arm and a leg to do that... Not the extra parts but the labor involved to redo an engine:(

Hey I got that issue also, great write up. That was my 997S they were talking about that was producing 450 whp. According to Mike @ Evo my car was tuned to 420 whp (500 chp) and 400 ft/lbs of torque, 20 more ponies and 40 ft/lb more torque over the 3.6l. With this power on tap my car accelerates lightning fast and will eat a stock turbo any day. I absolutely love this system and highly recommend it to all 997 owners. As Alex said, look for my car in European Car soon....

Bpanos is your redline still stock or do they lower it?

I noticed when an independent dyno tested the car the power was a little off, only about a 40-50 hp gain, what gives? I think you can make a chassis dyno say whatever you want to hear, the real test is a standard engine dyno with a water brake. Do you think NASCAR teams would rely on some BS chassis dyno? Time for the boys at the sc companies to plug these things into a real dyno before putting the motors in the cars that's the only way to know for sure, anything else is open to skepticism. In my racing days, we always dynoed our motors and tuned them before putting them in the chassis, couldn't imagine putting an all out race car on a chassis rig and try to extrapolate any meaningful data. Flame suit on.

They cut the dyno session off several hundred rpm short of the redline. They were down ho, because hp was still going up before they cut it off. They admitted as much in the article.

Who are you calling a ho, ho.

hp. They were down hp, because the hp was still going up with the revs. "o" is next to the "p" on the keyboard.

sticky, I believe my redline is still stock

I agree that the sc is probably a significant boost in hp, but I just don't trust chassis dynos, esp those operated by the sc company.

The magazine did their own dyno & that is when the problem occured. They got in the high 350-high 360 range. The writer admitted they let up a few hundred rpm before redline. Todd Zucchone said they were still getting hp at the soft rev limiter, & a bit past redline. If you look at the dyno chart provided the difference between 6700 rpm & 7100 rpm is 370 whp & 400 whp (what they claim). The centrifugal SC power curve is like that. The power increase is a lot on the high end.

I know Todd builds some good stuff but out of curiosity, claiming to be making XXX hp while you're on the soft limiter is a little strange. I admittedly have allowed my cars to run up on the limiter while autocrossing but find it to be of little use on street or track where running onto the limiter would slow you down as you try to upshift. Just a thought.

The car _is_ at our shop right now so if anyone wants to check it out drop in... The car is also for sale...