4" Turbo Back Cat? - Ford Powerstroke Diesel Forum
Please Visit our Site Sponsors
6.0L Performance Parts Discussion What has or has not worked for you?

Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
LinkBack Thread Tools Display Modes
Old 02-14-2012, 07:45 PM
Powerstroke.org Rookie

Join Date: Jun 2011
Posts: 21
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
4" Turbo Back Cat?

So I plan on doing a few mods to the truck in the spring. So far I have tried to be pro-active and changed to ELC Cat coolant, Installed a coolant filter, Scan-gauge, and did the blue spring update. My Delta is about 9-11 at the highest with the stock egr cooler. I live in Mass and have inspections every year. Will I lose a ton of performance having a MBRP 4"turbo back with a cat? Or should I do a SCT programmer with a light tune / egt probe? Also I still have a Ford ESP so should I not touch anything till that's done around 100k? Thanks

06 F350 6.0 73k
Reply With Quote Quick reply to this message
Sponsored Links
Old 02-15-2012, 08:45 AM
Compression Ignition Addict


Join Date: Aug 2011
Location: Bremerton
Posts: 441
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
I purchased a 4" Diamond Eye kit without the cat or muffler (straight pipe) and welded the cat back into the system after opening up the inlet and outlet of the cat to the new 4" diameter. Works well and only took a few minutes extra to stay legal without going all the way back down to the stock sized piping. I did run with it straight piped first and noticed a few degree rise in EGT after reinstalling the cat, but not enough to make me worry yet.

One thing I am considering doing is making a drop out section with two of the 4" band clamps to allow me to easily swap between kitty and no kitty... I have an extra section of 4" exhaust pipe to try it with, so I might as well...
Reply With Quote Quick reply to this message
Old 02-15-2012, 04:03 PM
Compression Ignition Addict

Join Date: Jan 2012
Location: Fallon, Nv
Posts: 2,403
Thanks: 54
Thanked 10 Times in 9 Posts
Feedback Score: 0 reviews
Read your ESP closely, it says 5 years OR 100,000 miles, being as this is 2012, you've covered the 5 yr mark.
Reply With Quote Quick reply to this message
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
What state or province do you live in?
Security Question
*Required, this field is not shown to others. Enter the last two characters of the word "Powerstroke"
Security Question #2
*Required, this field is not shown to others. "While balancing on a piece of wood, two inches by four inches known as a 2x4, john and his friend sally both spotted a dalmatian inside a truck with sirens, headed to put out a fire. State the animal mentioned in the sentence above."
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Display Modes

Posting Rules
You may post new threads
You may 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -8. The time now is 11:16 AM.

Powered by vBulletin® Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.