Jump to content

E7 350 has warm egt’s with 4” turbo back exhaust


rhinoo
 Share

Recommended Posts

I was on here a while back and had bought a truck with an upgraded s-400 turbo which had terrible turbo lag. I added bigger injectors and made a few tweaks to the pump. Truck runs great now but egt’s are a little warm. 1050 degrees behind turbo @ 36-37 pounds of boost. If I’m driving it and get in a long pull I can let out of throttle and get it to drop down but at some point one of my lead foot drivers will be in it so I’m thinking I need to cool it down. My question is, if I get rid of the 4” exhaust will that help or do I need to back fuel down a little? I really like how it’s running and hate to defuel it. 

Link to comment
Share on other sites

19 hours ago, R.E.D said:

Absolutely, 5" will flow more cfm, therefore lower back pressure and lower egt's.But I don't think the drop in egt would be substantial.If your not running a straight pipe, check your muffler for obstructions ,it could be plugged up from years of use...but never the less in my opinion, it's never a good idea to give a driver a modified truck..that's just asking for trouble...just my .02¢

Also want to add here!  be sure the muffler you buy is Made for a single exhaust truck  4inch or 5 inch ! There is a difference  in dual and single ! We got burned once by making a dual into a single and not changing mufflers ! School  of hard knocks came into play here!

 

Just sayin

  • Like 1
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...