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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 05-30-2013
4literbeater's Avatar
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Join Date: May 2013
Location: CT
Posts: 12
ill effects of tunes

After reading on here about tunes and such I wondered if there were any ill effects to doing mods like this? Does it decrease engine life? I know it adds power and gets better mileage but id rather not pay to destroy my truck. Hoping you all will have positives to say is this 4.0 doesnt have the get up and go like my full sized truck. Thank you
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Old 05-30-2013
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Join Date: Mar 2009
Location: Clinton, Ontario
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I never had a problem with mine... I only had it a few years but no issues in that time. As long as it's done properly there should be no issues.
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Old 06-04-2013
IN2 FX4's Avatar
Join Date: Feb 2005
Location: Costa Mesa, CA
Posts: 854
I have 154K miles on my Ranger and most of that has been with a performance tune. I have experienced nothing that indicates a decrease in engine life. The only ill effects is when I switch back to the stock tune for smog testing. I can't wait until I get back on the performance tune to get the performance and drivability back. I was told it should pass with the performance tune but I don't want to take any chances.
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Old 06-14-2013
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Join Date: Mar 2011
Location: Elm Grove, Wisconsin
Posts: 209
I threw a complex computer based tuner on my truck to alter the ignition and fuel control, and I gained about 20-30 horsepower, but am down to about 11 miles per gallon
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