Supercharging the 2.7 - Opinions

[rule1]

Actually it is the 3.2 kit and they said it take a couple of weeks to tune it.

[porsche986spyder]

Any one know the cost? What about the turboworks turbo? Would that be better power wise?

[Adam]

I don't believe turbowerx makes a kit for the 2.7L yet. But after seeing Gary's dyno results I would never supercharge the boxster engine. The gains pale in comparison to the twin turbo setup.

[der Geist]

Originally Posted by Adam

I don't believe turbowerx makes a kit for the 2.7L yet. But after seeing Gary's dyno results I would never supercharge the boxster engine. The gains pale in comparison to the twin turbo setup.

Adam- What were the differences? I didn't see the dyno. Doesn't Gary have the twin turbo? According to Turbowerks they went from a twin to a single turbo setup for the 2.7 liter. He told me they are doing their initial installs on the 2.7 this month. I spoke to him via email and was going to have it done but the logistics of getting it to Austin along with a vacation conflict were a little too much. I had second thoughts as well as I was told this kit would be out "next month" on more than one occasion last year. Also, he told me that the ECU would need extensive reprogramming and I am kind of iffy about that. I am sure the kit is fine but I don't think I want to be the first one to put a turbo on a 11.3:1 compression engine. I would feel a lot safer if the compression was lowered. Maybe that's why the dyno is the way it is. I don't think you can load a lot of boost with that much compression. $ for $ I think a 3.4 swap would have been better. I know turbo technology has moved forward wuite a bit but Turbowerks claim that of the single turbo performing as good or better than the twin didn't make a whole lot of sense to me.

[Adam]

I'm not sure why they have a 2.5L and 3.2L kit already out, but not one for the 2.7L. They said they are going to go single turbo instead of twin? I find that strange since the 3.2L and 2.5L kits use twins. I have never corresponded with the guys at turbowerx so I don't know what all they have to change to make this kit compatible. Turbowerx uses an intercooler and the superchargers do not, so they can boost in a couple more PSI into the engine due to the cooler charge. We are only talking about 6 PSI so even on the high compression engine, it should be fairly reliable I would think. Here's Gary's dyno sheet with base, supercharged, and turbocharges results. He had the S/C on there, but then went to the TT setup. It's easy to see which one gives the best results. Take a look at the torque curve on the turbo!

[blinkwatt]

Damn the powerband on the Twin Turbo is SWEET! It kind of makes the Supercharger set up mild.

[efahl]

Don't forget that the SC numbers were run with the rag in the intake... (I'm assuming that's so until Gary says otherwise).

Eric