Great first post man. So is a custom tune needed to recalibrate the speedo or is there a setting on the tuner that does the trick? I've had my tuner for over a year but never really played with it much although I don't remember seeing anything that I thought would change the speedo without changing something like tire revs/mile or gear ratio.

 

I'm pretty site the link in my sig has a how to of how to swap a bullet cluster into a GT using the same method as above.

I might have to give this a try and make use of the spare gt cluster that I have.

 

if you got a smart phone, like android or iphone, easy! download the speed view app, so you have a accurate speed reading, you have to play around with the tire size on the programer to get the cluster calibrated, might take a few trys to get it as close as posible, I did 3.73s with the Cluster swap and my speedo was way of about 20mph at 80mph, so i was reading about 100mph on the cluster... its basicly trial and error, hope that helps

 

if you got a smart phone, like android or iphone, easy! download the speed view app, so you have a accurate speed reading, you have to play around with the tire size on the programer to get the cluster calibrated, might take a few trys to get it as close as posible, I did 3.73s
with the Cluster swap and my speedo was way of about 20mph at 80mph, so i was reading about 100mph on the cluster... its basicly trial and error, hope that helps

You could also put the cluster in diagnostic mode and get a accurate speed reading on the digital screen where your mileage is shown.

Or you could use the 9V battery method and get the cluster calibrated exactly as it was from the factory.
How to recalibrate your gauges - New York Mustangs - Forums

 

Nice right up on the GT to bullet Swap "SouthFour" ya same concept on the V6 model,

 

Interesting... I have a tuner but it doesn't have tire size options like you guys'... Just gear ratio options... Would that still work?

 

your tuner company can fix that with a new tune then

 

Just a thought, wouldn't messing with the tire revs/mile throw off the odometer?

 

yeah it would be off by 20% so for every mile driven the odometer would show .8

but hey at least its in the right direction.

 

On second thought that ^^ is only going to work when swapping in a different style of v6 gauges.

If you want a perfectly accurate reading in a v6 car with

Cobra
Gt
Or Mach gauges

You will need to get it programmed at a dealer.

 

honestly i couldn't waste my time doing this though...i mean i have a GT outside and the clusters not special at all...i'd rather just get some covers for my current cluster

 

Yeah I don't plan on going over 120 mph either. I think i will stick with my Mach 1 replica gauges.

 

did the tachometer read correctly when you did this or was that off too?

 

All your other gauges work the same, me personally I don't mind that my odometer is off a few miles, different motor anyway, its one of those mods that's not for everyone, but I like looking at a 150 speedo vs a 120 :-D

 

I hate to resurrect an old old thread..but wouldnt this be the same as buying a $20 gauge face kit for a gt then putting them in a v6 cluster and dealing w the speedo however is necessary?

 

pretty much.

 

Thank you...