Another e55 supercharger source - Benzworld.org

E55pvan · 05-07-2005, 12:11 PM

Mamoru Ogose in Japan who use to work for RUF a big Porsche tuner now has his own tuning business in Japan called GRUPPE M www.gruppem.co.jp
His shop offers an $8,000 eaton intercooled for Acura NSX's that is well proven in the US and all over the world.
His company also offers a package for E55's, I don't know the particulars, but I thought I would share the contact info with this group.

JoshKeaton · 05-20-2005, 05:34 PM

I just checked their site and wasn't really impressed with their numbers. 414 HP on an E55? If they're posting flywheel numbers (which most companies do) that's only about 354 to the wheels (assuming a 15% driveline loss). There's supercharged 430's making more than that to the wheels. If 414 is a rear wheel number, it's still not all that impressive coming out of a 5.5L motor.

New products for our cars are always good to see but barring some big new developments, I'm not impressed.

JoshKeaton · 05-21-2005, 12:56 PM

Here's the link for anyone that's interested:

http://www.gruppem.co.jp/en/product/superchager/index.html

Looks like someone else reinvented the wheel - it uses an M112 Eaton just like HPS' Gen 2.