1996 ssei, i ask becasue today i was "on the track" and took it up to 130, it was still climbing but i had to abort cause a turn was coming up

It should be 128mph. I know mine bounced off of 129mph on the dyno...and stopped at about the same on the street

look on your drivers door, there is a sticker that will tell you what tires the car shipped from the factory...

well the tires are H-rated, so 130, but it was still going strong, im confident i couldve got it over 150

im guessing this was on the HUD display.....yes the car CAN go 150...the PCM wont let it tho

Your car is limited to 128. The actual speed in which the PCM cuts you off may vary 2-3mph or so either way. Some cut out at 125. It will pull hard up to the limiter. But not after that.

150 without mods.. righhhhhht

try 135... bet ya cant

I remember reading that GM set the speed limiter in the ecm according to the tire option on the car at the time of manufacture. If your factory tire option was H then your speed limiter was set accordingly and if your tire option was Z it was set higher even though it could be the same car otherwise. I'll have to check it out because my ssei came with the Z option tire pkg from the factory.

Flatlander

Correct up to a point. The highest speed limiter setting available was 128. Even though my 93 came with Z rated tires, it still got the 128 limiter that SSEi'* got with H rated tires.

The L27'* and L36'* got a limit of 108 regardless of tire speed rating.

Can the speed limiter be hacked?

Replace a chip or something?