sprint booster or Racechip
 

they seem to do the same thing improving throttle response. Anyone have experience or know of any difference? warranty or easier install? seems to be different Kw output. thanks
http://www.amazon.com/RaceChip-Respo...omotive&sr=1-4

SB hands down my favorite mod on my Z. If they still offer the trial program do it. Return of you don't like it. But it works and works very well. Don't know about the chip.

i run the sprint booster on my Z. i like it. the plug for the harness was a pos on mine though. it plugs in securely but the retaining tab would not lock correctly so i e-taped it. no issue after 3yrs.

still does not compare in the quick response as my 12yr old G though (stock map) but it is 10x better than not having it in the Z. wat i like best is i dont have to set it each time. plug it in, set it up, and forget about it.