Re-tuning for 3.73s
 

Anyone in the MD/VA/PA area have a tuner to re-tune my 3.73 gears. I dont want to fork out the 300.00 or so just for one thing or pay alot of money to get it done. Thank you

Youll have to get a chip or XCal either way. Best thing to do would probably get order a chip from here, Modular Depot, or Modular Powerhouse with a mail order tune on it.

You can't use someone elses tuner. They are coded for the car once you use it unless you put the stock tune back on it. In short, if you use it for your car, the other guy can't.

You're speedo won't be that far off...just drive it like that for awhile until you need a tune

I have a chip I need to get rid of.

Unless it's an automatic; the trans won't shift properly, in addition to the speedo being off. With a stick car you can also use a speedcal or abbott box, but if a tune is in your future, get a chip or hand-held so you don't fork over cash for a part that will soon be unnecessary.

its a manuel transmission

I was looking at this speed-calibrator-94-04 How does it work and where would you plug it into?

your thoughts on that above

What it does is ratio the signal from the speed sensor to the PCM; that one looks like it plugs in right at the speed sensor connector. This is the kind of device I mentioned above. There are several dip switches inside the unit; you set them in a particular order to match the correction factor you need to make the speedo read properly (a list is included with the device). If you currently have 3.27 gears and are installing 3.73s, your speedo will read fast, so divide 3.27 by 3.73 to come up with a .876 correction factor, set the switches to most closely match .876 and you'll be real close.

oh ok thank you for the helpful info Wheat.

get a speedcal! cheap!!!