JET (junk every time) nope not worth it if you ask me. 200 goes a long way towards a jwt cpu that will do that. I have heard of people messing stuff up with those type of things, just turning the knob as far a possible and thinking that it means more power. 200 dollars would be a good start for a cai or something else. So what im trying to say is avoid it. But thats just my opinion. -sean