I'm using the tomei 2.3L kit in my own car. What I had noticed was that after the installation, was the sound of the engine completely changed, to a deeper sound. When I depress the clutch, the engine easily picks up. After 2500 RPM the torque is really smooth, like an NA engine. The most impressive range is from 4000-6500 RPM, here the range is really fast and the feel is just amazing. With just the 300cc upgrade, the difference over stock is very noticeably different.

Other brands tend to have vibration problems, but the Tomei design never had this issue. This time we've fitted a Tomei kit in an EVO 8 MR with a 6 speed manual. The last time we fitted the same kit in an EVO 7 with a 5 speed manual. We've noticed that this stroker kit compliments both models very well.