hey guys, i'm new here and although i've had my '98 gt for a little over two years it's basically stock except for dynomax race bullet mufflers. anyway's i'm going to have new gears installed real soon (and i'm gonna have them installed at rearend specialties in santa clara, ca so if anyone has info on these guys please share) and was wondering what was the best way for me to go about correcting my speedo. i don't see myself doing anything more than catted x-pipe, headers, and throttle body in the next year so a custom chip can wait. so other than that what should i go with, speedcal, speedo tooth, etc.?
best way to correct speedo?
- Thread starter o0akoni0o
- Start date
Cobra Jay
Member
I'm using a DM SpeedCal for now 'til I get a few more mods done over the Winter. Then I'll get my speedo corrected when I get a chip and dyno tune in the Spring. BTW No problems with the SpeedCal what so ever. 
97gtconv.
Member
sorry for doing to budge into this thread to ask a question to someone else.
GT JAY how do u like that Dallas Mustang Speed-Cal, i have my 4.10's 8.8 rebuild kit and the dallas mustang speed cal in my garage. You've had no problems excelerating or missing through out the power band. anything? I'll have mine in time for friday. thanks guys
GT JAY how do u like that Dallas Mustang Speed-Cal, i have my 4.10's 8.8 rebuild kit and the dallas mustang speed cal in my garage. You've had no problems excelerating or missing through out the power band. anything? I'll have mine in time for friday. thanks guys
BayArea02GT
New Member
I have got my 4:10s today and I am going with MW Speed Cal. Also, I am going to get them installed at the same place you are 
w00t
New Member
Cobra Jay
Member
AdRock
Member
If you plan on using the stock tune with the Predator you won't be able to change the rear end ratio. It's a known problem that Diablo is trying to fix. Just some food for thought.
