The gen 2 has a factory lean surge when cruising at slow speed, 30mph for example. It's annoying. The Nash flash is a flash for the ECU. It's about $550 but I've heard it's night and day from stock. It gets rid of the surge, and also gives full power in the first 3 gears. The vmax is limited on power until 35mph if I remember right. Speed limiter goes to 132mph nash flash also eliminates that.
http://guruedgear.com
There's the link. If you go with a full exhaust system, or a decat pipe you'll need a reflash as the vmax comes running lean from the factory. But the left rear cylinder runs leaner than the other 3, and more so with an aftermarket exhaust.
And the most important of all.......you'll knock .32 seconds off your 1/4 mile time! LOL