i have a spoon chip, and a bull frog chip. the bull frog chip is for a p06 and is VERY slight, almost unnoticeable...and increased the redline to 7000. the spoon chip was for a p28...i put it in my p06...it threw a CEL (looking for vtec), and increased the redline to 9200...which is absolutley ridiculous, even for a built d-series, but it added so much torque that my stock clutch couldnt handle it, and just started slipping all the way through 5th gear.

if you already have a zif socket, i guess its fun to screw around with...but the only reason i have it is for uberdata/crome for tuning my turbo setup. i wouldnt get one as a sole mod.