Hey guys happy late thanksgiving! I just got my bew tires in and put on and of course its a slug.. Jus curious as to which gears i can go with and get that power back and still be able to run 70 at a decent rpm any advice is appreciated thanks

Sent from my iPhone using IB AutoGroup

 

Opps forgot to tell ya i got an 05 f150 5.4 kingranch, 4x4 w/ towing pkg and 37x12.50r17 trail grapplers

Sent from my iPhone using IB AutoGroup

 

4.56...imo

4.88 if tires are bigger than 38"

 

Is that going to help my 10 mpg problem or make it worse and at 70/75 what will my rpms be like?

Sent from my iPhone using IB AutoGroup

 

NOTHING is going to help gas mileage when you lift a truck and put big heavy wheels and tires on it.

With 37's and 4.56's, you will be turning about 2200 rpm at 75.

With that intake, you NEED custom tunes to keep it from running lean and damaging the engine.

 

4.56 anda tune

 

Ive got an edge evo on it .. Do i need to do like a gryphon or whatever?

Sent from my iPhone using IB AutoGroup

 

Hi.

Affirmative. And, like, yesterday, lol.

OR - if you have the stock intake put it back on and just do the Gotts mod - that is safe, and you will not notice any difference power-wise.

It'll save you a bit of scratch for the gears.

Good luck!

 

I dont have that stock intake and is the gotts mod the intake box and cold air combo thing ive seen a few times on here? And how do i go about getting a custom set of tunes? Im kinda clueless on this electronic stuff lol

Sent from my iPhone using IB AutoGroup

 

Mornin';

Gotts Mod for 04-08' 5.4 3V's:

https://www.f150online.com/forums/ar...4l-engine.html

https://www.f150online.com/forums/ar...04-2008-a.html


Custom tuning for Evo/gryphon:

http://www.gopowerhungry.com/_ordering_info.shtml

Contact them for any further info / questions - it'll be $60 per tune - a real bargain these days.

MGD

 

hopefully the tune will be in time to save the motor from damage

 

Thanks bud ill have to give em a call and find out how to do it... Appreciate all the help

Sent from my iPhone using IB AutoGroup

 

Ha its been like that for over a year and i have no idea how long its been on there before i bought the truck!! What damage will it cause ?

Sent from my iPhone using IB AutoGroup

 

Running lean can burn valves.

 

Oh ok thats true.... It wont throw a code for that? And who is a highly trusted tunes co? Id like to have alot of power and maybe good mpg if its possible to have both but id rather have mor power i reckon

Sent from my iPhone using IB AutoGroup