Howdy yall... just bought me a '98 F-150 reg. cab w/ 4.6 on it and flowmaster exaust. It's got stock 16' Goodyear Wrangler tires on it, and was wanting to put 17' mud or all-terrain tires on there. I know the bigger tire will screw up the speed a little bit... but how much? I know there is a way you can re-calibrate the speedometer, but how do you do it, and if you pay somebody to do it, how much does it cost? Thanks yall.

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Gig 'em,

TexasAggie

 

One easy way to calibrate for tire and rear end gear changes, and chip your engine for a 1998 4.6 is to buy a Hypertech Power Programmer III. Performance features and what can be adjusted can be seen at hypertech-inc.com

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2000 F-150 XL,RC,LB,5.4,4R70W,3.55LS,
4-wheel disc/ABS,Chestnut/Parchment,
Ford bedliner & gas/wheel/spare locks,
3" cold air box modification,Superchip,
Dynomax ultra-flow welded 3" cat-back.

 

Yeah I thought about using the chip. The only thing is that its 400 bucks. Can you go to somewhere like a tire shop or somewhere where they already have it, and they just plug it in for say 50 bucks? Thanks for replying.

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Gig 'em,

TexasAggie

 

Go to: http://www.ford-trucks.com/dcforum/80_96/1838.html

(There's an underscore between the "80" and the "96" in the above URL, as in "80_96".)
Info on reprogramming your speedo, for free

[This message has been edited by StrangeRanger (edited 05-30-2000).]