Rear end help

**blowin by** · 10-02-2008, 04:46 AM

just put 4:10s an a posi in my 98 Z. can /how do I get the speedo recalibrated?

**RARON455** · 10-02-2008, 05:45 AM

You have to have a program that will let you get into the plc and make changes, if you do it yourself. You can also have a speed shop do it for you, I know of some here in north texas.
Your other option is to pull your pcm and send it in to a tuner. I highly recommend Frost at lsxtune.com he is a sponsor on this site, and not only can he change your speedo he can put a custom tune in the pcm and you will get a little more power and speed, truly beneficial if you have bolt ons. I believe he is running a special right now for 125$ for a tune. I had him do mine and noticed a big difference.

Either way you have to hook up to the computer and change something to correct your speedo.

**blowin by** · 10-02-2008, 06:27 AM

Originally Posted by RARON455

You have to have a program that will let you get into the plc and make changes, if you do it yourself. You can also have a speed shop do it for you, I know of some here in north texas.
Your other option is to pull your pcm and send it in to a tuner. I highly recommend Frost at lsxtune.com he is a sponsor on this site, and not only can he change your speedo he can put a custom tune in the pcm and you will get a little more power and speed, truly beneficial if you have bolt ons. I believe he is running a special right now for 125$ for a tune. I had him do mine and noticed a big difference.

Either way you have to hook up to the computer and change something to correct your speedo.

Right on..... thanks for the info!