Congrats bud. Don't get boost hungry. Just like those infomerals, "just set it and forget it." 4.5 psi is enough.

 

WOW that car is a real beautiful and now it is FAST. Enjoy it those Ozark mountains roads can be fun

 

So MexicoBlue!
I don't know you as everyone around here but your words are simply...right.
Just try to have fun with it without having 46416 hp under the hood smashing your car!
You have one of the greatest 997 S I have ever seen.
Thanks for your review.
I'm waiting for pics of your awesome ride...

 

Mexicoblue,
you claim that your aftermarket blower and some exhaust mod resulted in an additional 170 hp , for a total of 525 ?

That's an increase of about FIFTY PERCENT over the 355 hp rating by the manufacturer and almost 50 hp more than the new Turbo .

Please forgive me for being a little skeptical .
But if true, I wonder where that puts the Porsche or Ruf engineers on the I.Q. scale ? Or for that matter, anyone who buys a Turbo ?

 

If you look at the history of blowers in general you see most gains are on average 45%.

This is a centrifugal blower. Porsche can’t and will not do projects like this because of the liability involved. You imagine telling all your customers they have to run 91 or 93 octane. They would never allow this. You have to have a knucklehead net for all production cars. A blower while safe is not going to be something the masses will follow the rules on as a whole from a car manufacture. When people by an aftermarket kit they become educated in the process and are typically of a different personality then those simply buying a car off the lot.

From a buying standpoint. I have considered a 997S with a blower. Not a bad way to go.

 

Thank you for your clarification.
Regarding the fuel ratings, I CAN imagine Porsche telling their customers to use 93 octane .
My manual clearly states that they recommend using 93 octane , with a MINIMUM of 91 .

As for the claimed 170 hp , why would anyone buy a Ruf Supercharger which produces only about half of the above claimed hp at double the cost , or a Turbo for even more ?

As previously stated , I am rather skeptical of questionable claims made by aftermarket manufacturers , not to mention the resulting total loss of any factory warranty .

 

The best thing to do is to drop the thing on a dyno next to a stock 997s and have the numbers do the talking. I would look into a supercharger that adds even 100hp for half the cost of the X51 package.

 

JCS,

It is not unusual to expect to gain significant amount of power with these aftermarket kits. Aftermarket kit makers can more easily push it to the limit with the understanding that the customers are WILLING to accept a higher level of risk in return for enormous H.P. gains. The regular manufacturers like Porsche have a lot more things to worry about: fuel economy, smog requirements, warranty issues, reliability(long term, 100K miles +), potential for lawsuits, availability of high octane fuel in certain parts of the world, etc.

If you are the type that don't like to take risks(which is a perfectly fine decision) or be concerned about warranty issues, you have to stay away from these modifications and stay with stock and be willing to pay much more for comparable or even less performance.

 

Sounds amazing, Congrats. We need to stick this in the GT3 vs 997S modded section. lol.

How many hours of labor does the install require? Also how many miles should you break the car in for before install?

 

I have the base line dyno if anyone wants it.

As far as what Porsche says and what can be done are two different things. they say 93 but it can run at 87. They know people will do that. On aftermarket stuff if we say 91 or 93 WE MEAN 91 or 93. No less, no exceptions.

Personally I gave up on warranty a long time ago. BAH Humbug. I bought it to drive and want to have fun. I am not going to spend what I do on a car to have someone tell me I can't do something. So I also deal with the consciences. Like a ticket, you know you are speeding and will have to deal with it if I get caught. Aftermarket and warranty is about the same. The truth is though not all your warranty is void anyway.

 

me too . . .

Pretty much knew I was giving up my warranty when I strapped on the blower, which may answer some of your questions above regarding why Porsche doesn't do this themselves. Some people are very attached to their warranties. These are not the same people who have Stage XII cars on here making 3,000rwhp. I tend to fall into the latter camp, which is why although my current setup runs mild boost with dramatic gains, I am already asking them when I can go to a smaller pulley for more hp. It's a risk / reward thing . . .

As I said before, I'm a lover, not a fighter, but I knew this fight would be coming with this board's fixation on dyno numbers. I'll post a graph when I get one. I literally asked what the car made at the wheels as I was walking out the door at EVO only because I knew people on here would want to know, even though it means very little to me whether I gained an extra 100hp or 170. All I know is it hauls ***, and was worth every penny for the difference in the way it drives.

They told me it made 418 at the wheels on a hot Phoenix day without a good fan setup at EVO, and 430 at GIAC in southern California when they were doing the tuning and were better able to simulate the airflow through and across the car at speed. I trust these guys implicitly. Plus they weren't trying to sell me anything, as I was already done, had already paid, and would have been happy with significantly less. I don't think a 45% gain from a supercharger install is unusual, and truthfully suspected the 470 at the crank they promised in their ads seemed a little low - particularly since they claimed 470 for the 3.6L as well, and since everyone seems to think the 3.8L has a pretty constricted exhaust setup from the factory.

But what do I know? Honestly, not much except that I think the change is dramatic, cost effective, and I would recommend it to anyone considering it.

Thanks, Russ

 

Conrats! I am glad you like it.

I suspect your math is flawed, but I am not an expert. According to EVOm you increased rwhp from 291 to 430, a 39% increase. Your estimated hp loss thorugh the drive train is 18%, but I doubt you lose the same percentage when you increase hp (you are turning the same parts and moving the same car, so I suspect your hp loss stays about the same). If I am right (?), your hp increased to about 494. That is still pretty awsome...

Enjoy.

 

This pic is awesome: Twin turbo 997



The only problem seems to be the price. It costs twice than your kit to make the same power: http://www.t-t-p.de/english/997carrera.php

 

Good point. I've asked that question before, and been told the % loss to drivetrain is just that, a %, rather than a fixed number, and that it holds true for higher hp cars as well, and I then received a detailed, physics-laden explanation of why that is that just made my hair hurt! Again, English Lit. major here, but I suspect there are both fixed and variable components to that equation, so that the truth lies somewhere in between the two. But since the car lost 64 horsepower to stock through the wheels, I'm pretty sure that a 63-horsepower engine could actually move the car, even if only slightly, so I think your theory that it is a fixed number doesn't work either.

But again, MexicoBlue <---- lover, not fighter. Let's just go enjoy driving the crap out of our cars . . .

 

And again, I'm not an expert either, but an increase from 291 to 430 is a 47.766 % increase, not the 39% you state (139 additional horspeower is 47.766% of 291).