it's a lot $$$ for just fixing lag, but when you need immediate throttle response, like for drag racing, or just like that quick feel when you drive, you can't beat it...I am still waiting for the guys who were going to build it for $30.....guess they got busy doing other mods...like the new and improved cup holder, or possibly the new and improved trunk organizer...or the new and....well, you get the picture....