zx2 speed

Why won't my zx2 go faster then 106mph?

My guess would be that is where the ECM's limiter is set. My Impala SS cuts out at 145.

yeah there is a wire that tells the pmc to shut off at 106mph, a superchip will bypass that, ive hit 142mph stock s/r

yeah there is a wire that tells the pmc to shut off at 106mph, a superchip will bypass that, ive hit 142mph stock s/r

My friend's cop-spec 9C1 Caprice hits the limiter at 154!! Glad to know that. I won't be trying to outrun one of those! (not that I would:naughty:) I noticed once when looking at a police car that the light bar said it is only speed rated to 120 mph. I wonder what happens above that? Does it pull outta the roof? Come apart? Turn into a pumpkin? Enquiring minds wanna know!

My father-in-law just bought a cop-spec 2000 Crown Vic from the Tampa PD, I'm dying to get it out in the open and bury it, for research purposes, you know.:biggrin: A cop friend told me the Vics are quicker to accelerate out of a turn, throttle roll-on accelleration, but that the Caprice tops out higher and is more stable at high-speed. He said if he had a choice of what to use as a battering ram, he'd rather have the Caprice.

most cop spec cars from chevy just have a lt1 droped in it unles it was bought for high speed purposes tehn it has a ls1 with better flowing exaust and intake

His is LT1, with a performance chip that I was able to secure from a friend who's dept used them in their Caprices. They were removed before going to auction, because they are not emissions compliant. His diff's ratio is lower than my SS too, I can run away from him in the bottom end.