Newbie needs help!

[SoonerStang7]

I just purchased a 2001 coupe GT. I was told that the previous owner put 3.73 gears in it, but it wasn't tuned so the speedometer is off by a couple mph. I was wondering if I would have to purchase a tuner, or if there is a place in Oklahoma City that I can go to have this fixed. Also, does this affect the mileage of my car at all, it seems like I am putting on more miles than I am actually driving.
Another issue I am having is the seat belt light is blinking as if I'm not wearing it. Is there a fuse or quick fix. If not, do I just need to replace a sensor? Thanks in advance guys.

Mike

 

[03_TrueBlue_GT]

Hi welcome to the forums and congrats on your new car... Now for your questions.

Yes you will need to get the cars computer tuned for the new gears, the car still thinks it has the stock 3.27's in it and the speedometer/trip monitor will climb higher than normal... When I got the gears installed on the car I waited about 5-6 months till I bought a tuner and racked up more mileage than it does have right now, but I plan on keeping this car for as long as I can so mileage doesnt bother me... When it was not tuned I would go about 275 miles in the city and I thought this isnt right I cant be getting 22mpg in the city! Then I learned that I had to get it tuned...

You should be able to find a tuner shop in the area to get the computer tuned but its going to cost a lot because your basically buying a dyno tune and that can get pricey by the hour, but if you have a lot of boltons or other power adders this would be a good time to get the car tuned to get the most hp you can get it out of it vs a mail order tune like I have.

Me I went the other way and bought a SCT X3 Tuner from American Muscle and I love it for what it is. I was happy to just get the speedometer reading correctly, but the mail order tunes did help out a little but a dyno tune at the shop would yeild more power but oh well...

The good thing is now that I have the tuner I can basically go to the shop and I wont have to buy a tuner from him and I can just have him program the car then upload his tunes on the SCT.
Whatever you do wont hurt, I would do whatever you can afford right now... In the long run going to the shop and having the guy tune your car and you buy a programmer from him would be the best way but if you dont have the cash laying around and want to fix it soon get the tuner from American Muscle, heres the link to it.

Good luck and welcome again!


SCT SF3/X3 Power Flash Tuner w/ 3 Free Custom Tunes (99-04 GT) at AmericanMuscle.com - Free Shipping!

 

[ndiguy]

Agree with TrueBlue. Just get the SCT w/3 custom tunes and that should work. Diablosport will work also. I have 4.10s, CAI, Magnaflow catback and a Diablosport tuner w/87 octane tune and my car runs strong for what it is. The tuners allow you to change parameters like correcting speedo for gear changes, turning off traction control etc. BTW, you might want to consider throwing a chin spoiler on there while your at it. Makes the ole stang look more aggressive for not much money. Don't know why your seat-belt light is staying on.