Why do I need a tuner for.....
06-07-2012, 09:02 PM
#1
Member
Thread Starter
Join Date: Aug 2011
Location: NJ
Posts: 32
Likes: 0
Received 0 Likes
on
0 Posts
Why do I need a tuner for.....
My 05' f150 lariat screw 4x4 with flow master catback exhaust & CAI with 132,000miles?? But my old 2000mustang gt with the 4.6L with the same mods was fine?? No tuner needed...
Thanx for any input
Sj78
Thanx for any input
Sj78
06-07-2012, 09:38 PM
#2
The 3V 5.4L uses a slot style MAF which is not as forgiving as the old style like in your 2 valve 4.6. The 04-05 5.4L also runs a 14.7 a/f at WOT, and runs nearly lean from the factory sometimes.
06-07-2012, 10:01 PM
#4
Senior Member
Otto, so if my 2v 4.6 F150 has the same mods as the OP then a tuner is not really needed? Just trying to learn...
06-07-2012, 10:33 PM
#5
It is not as dangerous on the 4.6L, however if you want the full benefit of any intake a custom tune will make the most of it. Catback exhaust modifications don't warrant a custom tune.
Trending Topics
06-07-2012, 11:03 PM
#8
Senior Member
Originally Posted by Fuugz
Not trying to hijack, but would I need a tune if I put a cold air intake in a stock 04 5.4 3v?
