Yeah ? i have 30 " wild country radial all-terrains...lol and no way will it lite em up ! i love the truck but can't believe it won't...lol yea i guess ill have to save for a k&n, Flowmaster exhaust, ****** headers...then i should have no problem burning out...and maybe a edelbrock intake manifold...i dont plan 2 do it a lot but just once in a while for fun ya know ? thanks !yeah broncos are sick and i love ford and also love them yota's as well !!!

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Seems like you are still intent on burning out.
I have 33's on mine and never considered trying to burn out, so I don't know if my 302 could do it. However based on the comments of the others, it seems as though you should be able to smoke those 30 inch tires. Since you can't you may want to do some trouble shooting of your fuel and electircal system to see why you are lacking power.
All you need is a cheap voltmeter, and a short length of wire.
Your computer monitors the functioning of your engine and its sensors, and will set DTCs for you to retrieve.
WHy don't you pull codes and let us know what you come up with?
Even if your Check engine light is NOT on, check for codes.
I found a great article on how to test for codes.
http://www.fordfuelinjection.com/files/self_test.pdf
This will be of particular interest to those with 1984 through 1988 models, but is also excellent for those up to the 1995 models.
With an '88 the only tools you will need to check for codes is a short jumper wire, and a cheap volt meter.
Here are the connectors that you will find by the driver's wheel well, that you will jump with the jumper.