Notices

2002 7.3 ford diesel

Old 05-17-2008, 06:37 PM
  #41  
Registered
 
sleek1's Avatar
 
Join Date: Jan 2006
Location: Phoenix, AZ
Posts: 1,197
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by bigboat28
I am getting 16mpg f250 crew cab, 3:73 gear, 4wd, stock tires and its a 2002, anyone have a truck like this that they put the tuner in and what did your mileage go to? I am planing to also put 4" exhaust and an intake on it, would love to get 20mpg or better. I talked to Jody at DP Tuner yesterday told him I was going to do a 5" exhaust, he said that that was to big would lose power. Has anyone found this to be true or heard anything about this?
01 7.3 CC 4x4, 4" lift, 16.5x35x12.5, 3:73 gears, 4"MBRP exhaust DP Tuner and my last 1,000 mile all highway trip (relatively flat ground) avg 18.9mpg. This was according to the trip computer. I have had the odometer calibrated for my tire size. I'll start checking mpg at the pump on paper. I honestly don't think you're ever going to see 20mpg unless you stay with stock tires and height.

Last edited by sleek1; 05-17-2008 at 06:39 PM.
sleek1 is offline  
Old 05-17-2008, 07:04 PM
  #42  
Registered
 
Join Date: May 2004
Location: A tree somewhere in the woods in Clarcona Fl.
Posts: 1,461
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by bigboat28
What was your mileage before and after on those 2 different size tires? What was great?

18.2 at 75 to 80 towing an enclosed trailer (7x14) with 3 full dress Harley's in it. Dropped to 16.5 with the wider tires/rims, same trailer, same bikes, same driving speeds.
Slick02 is offline  
Old 05-19-2008, 12:02 AM
  #43  
Registered
 
Join Date: Aug 2007
Posts: 198
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Joe92GT
I'm trying to follow.. so your not using the AC line? Or are using the AC system? It sounds like you routed the AC line after the expansion valve into a cooler, then on into the truck/back to the normal routing.
Yes! that is what i did.

Simular to putting a super chiller on a blown motor using water for coolant.
B one is offline  
Old 05-19-2008, 12:06 AM
  #44  
Registered
 
Join Date: Aug 2007
Posts: 198
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Sydwayz
What rear end gears? What size wheels and tires? 4x4?

And the biggest question... was that 22.24mpg divided by hand or by the trip computer on the truck?
2001 F350 Duely 4:10 rear end 16" tires not 4 wheel drive and yes that is calculated by hand.
B one is offline  
Old 05-19-2008, 09:38 PM
  #45  
Registered
Thread Starter
 
bigboat28's Avatar
 
Join Date: Dec 2004
Location: Ohio
Posts: 4,007
Received 101 Likes on 73 Posts
Default

Anybody got any good results from just taking the muffler off of a stock exhaust system?
bigboat28 is offline  
Old 05-22-2008, 05:24 PM
  #46  
Registered
 
sleek1's Avatar
 
Join Date: Jan 2006
Location: Phoenix, AZ
Posts: 1,197
Likes: 0
Received 0 Likes on 0 Posts
Default

Are you smoking crack? How loud would that be?
sleek1 is offline  
Old 05-23-2008, 10:41 AM
  #47  
Platinum Member
Charter Member
 
Join Date: Jan 2001
Location: so. WI
Posts: 1,562
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by bigboat28
Anybody got any good results from just taking the muffler off of a stock exhaust system?
My Excursion is running with muffler delete. It doesn't make all that much more noise than with it on except for a slight increase in resonance. The stock muffler is EXTREMELY restrictive, and the muffler delete will drop the EGT's significantly. I've never calculated what the increase in MPG would be.
Those who don't like running without the muffler commonly add a Walker BTM (Big Truck Muffler) after removing the stock one. They are available at many parts stores- Summit Racing has them as well. Less than hour at a reputable muffler shop getting it welded on, the cost of muffler and install should run you right around $100.
Jim
jafo is offline  
Old 05-23-2008, 01:09 PM
  #48  
Registered
 
Join Date: Sep 2007
Posts: 432
Likes: 0
Received 4 Likes on 2 Posts
Default

I went with the magnaflow 4 inch system, with 3.5 inch down pipe. 409 stainless just under 500 dollars.

Zero power increase. Zero fuel mileage increase. HUGE drop in EGT's.

I hate the sound of 7.3's with out mufflers. Because of the firing order and piping, they flutter, and sound like crap.

Buy an exhaust system. A must for a drop in EGT's with a chip.
Joe92GT is offline  
Old 05-23-2008, 01:25 PM
  #49  
Forum Regulator
VIP Member
iTrader: (1)
 
Sydwayz's Avatar
 
Join Date: May 2001
Location: Worldwide
Posts: 23,724
Received 1,030 Likes on 456 Posts
Default

Originally Posted by Joe92GT
I went with the magnaflow 4 inch system, with 3.5 inch down pipe. 409 stainless just under 500 dollars.

Zero power increase. Zero fuel mileage increase. HUGE drop in EGT's.

I hate the sound of 7.3's with out mufflers. Because of the firing order and piping, they flutter, and sound like crap.

Buy an exhaust system. A must for a drop in EGT's with a chip.
I've got the 4" MBRP with dual exits behind the tires and 5" cans/tips on mine. I did chip, intake, exhaust, and gauges all in one shot, so I don't have any comparisons.

But it does run like a scalded monkey when I ask it to. OutlawMark here on OSO did all of my upgrades ( www.lightning-motorsports.com ) when he ran a shop here in Virginia. He has worked on countless trucks, and said that my combination provided the fastest stock turbo 7.3 that he had ever driven. (If you notice on Mark & Tom's website, they both drive 7.3s with mods. They know the trucks well.)


One note... on my 7.3 Auto 4x4 CC Dually (with factory 2" blocks, not 4") we could not get the 4" exhaust to stop smacking the transmission crossmember under acceleration when the motor torques up and the rear stays planted. You have less than 1/2 inch of clearance through the hole it has to pass through. I ended up padding it with a thickness of high temperature silicone radiator hose, and now I don't have anymore thump. This is a common problem reported on TheDieselStop.com. Other guys banged a dent into their long pipe to combat this problem, but I just could not see doing that.

Last edited by Sydwayz; 05-23-2008 at 01:34 PM.
Sydwayz is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
t500hps
Trucks, Trailers and Transportation
45
12-16-2006 05:38 PM
Boomer35
Trucks, Trailers and Transportation
17
09-29-2005 01:12 AM
fastboats
Black Thunder
8
06-28-2005 08:07 AM
OG Outlaw 24
General Boating Discussion
0
02-25-2003 10:28 AM
Sonny Spectre 30
General Boating Discussion
21
02-04-2002 10:17 PM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Quick Reply: 2002 7.3 ford diesel


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell or Share My Personal Information -

Copyright © 2023 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.