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Old February 3rd, 2013, 09:13 PM   #8
tiger blood
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Join Date: 10-14-08
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Originally Posted by deathbypsi View Post
If its a MAF truck and not speed density there really is no reason to use a Tweecer or tune it with a Quarter Horse. With the right size injectors and a matching mass air flow sensor the factory ECM will run it no problem.

I have a 94 f150 that was 5.0 MAF and last summer I pulled the 5.0 out and dropped in a fresh 5.8 and it was pretty much plug and play. I used the stock MAF sensor and some new 19lb injectors in the 351 and the stock ecm has no issues with the bigger motor.
and it will work. It won't be all it can be, but you are right, it will work.
but changing from a 19lb to a 30lb is huge and so is the difference in displacement.

If you are running an automatic, I would try to find an 5.8 MAF ecu set up to work with the e4od. That would be the ideal setup. I cannot image that your 5.0 has an e4od, but they did make em. Rare I bet, but they might just exists.
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