sticky

Out of curiousity, if one were to supercharge their car, if their car had x51 would there be a complication or would be it be the same as supercharging a non x51?

The larger throttle body seems like a minor issue and the redline will be limited by the new ecu programming anyway so the higher rev limit with x51 should not matter, correct?

Dave07997S

Other than the car being faster than a non X51 car. The only issue I can forsee is that the software that comes with the blower will have to be tweaked.

Dave

sticky

I was thinking the software might be an issue, perhaps it would have to be x51 specific. The throttle body might be another thing but not a huge issue if an issue at all.

I always wondered why no one supercharged an x51, especially in the case of buying used.

kauai_diver

I don't think it matters, but I wonder about the end result. How much more hp/torque a SC with X51 would generate over a regular Carrera S with SC and no X51.

Paul S.

I love my X51 and I don't get why one would pay for X51 and an SC kit. You could have a Turbo for that total outlay.

Regardless, you'd darn sure want to know the SC kit was optimized for X51-it also has a different intake, which would have more potential for remapping than the throttle body. Air/fuel mixture is crucial to driveahility and longevity when convertind from normally aspirated to forced induction.

JohnnyBahamas

I called the guys at RUF in Dallas and asked to have my x51 C4S supercharged. Living at altitude was the reason... I wanted all of the power all of the time.

The guy at RUF said, "No, we do not supercharge x51 motors." Apparently, to supercharge an x51, which is a GLORIOUS lump, you would have to take all the stuff off and/or out that make it an x51 in the process. Basically, you would return your x51 to a standard 3.8 liter w/ a super charger. Silly thing to do to such a glorious machine.

An x51 at sea level is a fantastic, almost super car-like, experience.

surfingbuddhist

I oftened wondered about this. Thanks for the info!

Anyone have any info on the subject of bolt on upgrades with respect to the X51 motor?

nkhalidi

I'd venture a guess that Ruf's statement is based on their particular supercharger kit and software, which is built to work with non-X51 3.8 motors only. Ruf would probably rather not mess with redeveloping their entire kit to work with the minority of X51 cars.

1999Porsche911

There is no reason that the X51 could not be S/C'd. Tuning difference would be minimal and some ductwork modified.

sticky

The car would still be X51, I don't see why you would have to take everything off. The cylinders heads and revised cams remain in place along with the headers, throttle body, and PSE. The only thing that comes off is the air box really.

sticky

Would GIAC do a custom one off tune?

SciFrog

Seriously, sell your car and buy a 997TT...

JohnnyBahamas

That's what I have planned!

sticky

Question was out of curiousity, I think we are all aware porsche makes a turbo model.

Deanski

To supercharge via RUF, they have to take the heads off and install a thicker head gasket to lower the compression for the blower. As for the cam, not sure they'd change that unless there was a problem with lift/duration with the blower.

Yes RUF warranties this new motor when done, but in any event, I'd stay with the X51. I'm not a fan of adding extra stress on a motor let alone the 3.8. If this was a 3.6 which has a bit more meat in the bottom end and since several castings are used in GT3/turbo, it can take the extra load from a blower.

You paid a premium for the X51 as it is, so why try to change something that Porsche designs? Sure, we'd all love more HP/torque, but if it was me, I'd buy a crate 3.8 or 3.6 and use that for blower/turbo.

Deanski