The non tuned grp's are what I think the best deal out there for the money right now. They are identical to the older grp ninja's just without the turbo head. I have two of them and they run excellent. One in truggy and one in buggy. I'm using odonnell 99 plugs and both are using a dynamite 007 pipe. Runtime in the buggy after breakin is around 8-9 minutes per tank. Truggy is around 10 minutes run time per tank. Both temp around 220 consistently. But I don't tune by temp I tune by sound and sight and performance. I heard from a couple people that the non tuned does run slightly warmer than the tuned.

Carolinasrc.com has the non tuned GRP on sale right now for $199 and then you can get $12.50 off by using this month's discount code.