- Joined
- Nov 26, 2009
- Messages
- 1,808
- Vehicle Year
- 1988
- Transmission
- Manual
Please due your self a favor and don't degrade the diesel power world!
yeah, they are doing a good enough job on their own


Last edited:
Welcome Visitor! Please take a few seconds and Register
for our forum. Even if you don't want to post, you can still 'Like' and react to posts.
Please due your self a favor and don't degrade the diesel power world!
I hated them, plus I couldn't smoke out small children on the sidewalk anymore.
In the REAL WORLD of ACTUAL PICKUP TRUCKS with diesel engines, stacks help a lot with egt's. I had a 5 inch turbo back exhaust on my 2004.5 5.9l cummins and egts were floating about 1450 and with the same size of stack except with a 7 inch tip egt's were 1200. The faster you get that air out the faster you spool your turbo, lower egt's, better gas milage. End of storyIt isn't nice to call country boys stupid.
Frankly 8 inch stacks are even worse. Unless you have a 13 liter+ diesel, you will see no benefit from those stacks at all.
Just an FYI, STACKS ARE GAY UNLESS ON A HUGE DIESEL.
heh heh heh....