02' 5.4 poor performance
Thread Starter
|
New User
Joined: Mar 2004
Posts: 2
Likes: 0
From: Las Vegas
02' 5.4 poor performance
My 02' supercrew has a 5.4 that gets 12.5mpg highway and doesn't have nearly the power of my 98' 5.4. I've installed flowmaster exhaust, K&N air intake system and used a superchip microtuner. Any help to these issues?
Thread Starter
|
New User
Joined: Mar 2004
Posts: 2
Likes: 0
From: Las Vegas
I have tried all grades of fuel, 87, 89 & 91 octane. I started out stock with 12mpg on a trip from las vegas to denver CO. I then installed the exhaust and K & N. The last step was the supertuner. I also noticed that it has minimal power going through the mountain passes compared to my 98 F-150 or even my 2000 F-150 work truck.
Elder User
Joined: Mar 2004
Posts: 616
Likes: 1
From: Florida Parishes, LA
If I'm not mistaken you need a min of 91 or 92 octane for the tuner. I would try to return the program to stock, fill up with high octane, run that tank out, refill, and reprogram with the performance tune.
Thread
Thread Starter
Forum
Replies
Last Post
