im am lookin at buying a 6.7 wondering what kind of fuel milage you get stock and dpf delet with a 6spd manual and any other other pros an cons you may have

 

my 08 got 13 to 15 stock and 20 to 22 after. clutches are junk in these trucks

 

If you buy one id recommend a DPF Delete using either the H&S Black Maxx, Smarty or H&S XRT. I would also recommend a Valair Nodular Sprung Hub Dual Disc Clutch Kit. You will notice a huge difference in power, fuel mileage and you will have a much more fun to drive truck.


Luke

 

Fuel mileage will vary from truck to truck. I have seen some 6.7's get as much as 18 mpg stock and as low as 8. From customers we speak to the average is around 13-14 mpg.

The DPF delete will make a huge increase in mileage, anywhere from 4 to 6 more mpg.

As far as the clutch, where its the same sorry dual mass setup that has been used since mid 2005 but thats nothing a good old South Bend wont take care off.

James
RSD

 

thank you guys im going to test drive a 07 on saturday i will get back to you on if i buy it or not. i much appreciate your imput

 

just like they said when mine was new 14 after deletes and edge with mp-8 at the time 20-22

 

i see you have the 5in magnaflow on your truck how is it in the cab i was told they drone bad

 

very loud strait piped with the muffler it is pretty quiet unless you really put your foot in it

 

Magnaflow kits with the mufflers dont have any drone. Any kit will have some drone straight piped.

 

The exhaust tip makes a big difference in drone and volume. A simple turndown will make the ground absorb some of the sound energy without adding any measurable restriction.