Hello, I have a 1990 F250HD 4x4 w/351W(FI) and the ZF 5sp.
This vehicle is now a off-road vehicle only, no on-highway usage at all. My question is it still has all the emissions stuff on the engine, can someone please explain to me what I can take off and what has to stay, I know a lot about these engines but need help on this. Like unscrewing the hot air tubes that go into the exhaust manifolds and plugging the with pipe plugs or what.
and can I do this and still keep my check engine light off or will it always be on.
I saw a truck just like mine at the local garage getting a new EGR that was a electrical company truck that had all this taken off and the engine bay looks real clean, besides there are emissions sensors on my truck that are bad and I would rather do this to clean up the bay.
It is a strictly off road truck now,
and besides I am in Arkansas and there are no check anyway.


thanks,
Joel Thomas
1990 F250HD 4x4, 351w, ZF,
305/75/16BajaClaws.Ferndale,AR

 

I am an Arkansan too. Take all that junk off! Put headers on it with Flowmasters. And build up the intake crap too. An engine is really just a big air pump. Try this. Doesn't an engine need oxygen to burn gas? Then...get a big oxygen tank and route a line to the intake. Run it off 100% oxygen. Air is only what 21% oxygen? It will boost your power! Do I have an idea here or what???

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ALLRIGGHHHTT!
thanks for the help but you may need a little help on the ovygen theory