Need Help on '04 5.4 custom tunes. - Power Hungry Performance Forum

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Need Help on '04 5.4 custom tunes.

2004 to 2008 F-150 and Mark-LT
4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs.

Wed, September 22nd, 2010, 03:07 AM

ticopowell ticopowell is offline

Grown-up in training!

Join Date: Oct 2009

Location: Currently in Locust Grove Ga

Posts: 864

You can run 93 gas in an 87 tune, but it wont take complete advantage of the 93, even if you change the timing, but changing the timing would help.

and again im no expert, but this is what ive seen/learned from reading the forum for the past yearish

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