Originally Posted by SilverBull

Lexus makes a great reliable car but this is why I left them. The IS350 was no mod friendly in a cheap way at all. This is why the BMW 335i is a hot seller. There are lots of mod potential with it. Hell, my 335i is as quick or quicker than an M3 or IS-F up to 100mph. The code of the Lexus cars is impossible to write or change. Notice how that is the holdup with all of the forced induction situations. They could make more turbos and SCers if they could actually get into the ECU better. The engine management system is locked up tight I tell you.

The IS-F is solid the way it is but they made it damn tough to modify in any easy way. Any supercharger kit will require changing the internals or it will be such low boost that it is a joke anyway.

Originally Posted by Supraman16

A 21 RWHP gain from a exhaust on a natuarlly aspirated car, like the IS-F is a HUGE gain. One would expect such gains from changing the exhaust on a forced induced cars.

Originally Posted by bjoraker

Interesting to look back in time. Aftermarket supercharger looks to be dead on arrival for ISF. Disappointing but not surprising.