just incase someone is looking at the gqssb, i have had one for over a year, had stock early 99 injectors with dp tunes, worked fine lag was not bad at all. everyone keeps saying it will have a really bad lag, nope sure don't. it has more lag with the 250cc 100%. but could be that i have a 15* still on it. but you can tell its only half spooling lol, it wasn't any slower, it seamed to have a good 5 Psi more. it had more top end power....