muffler 2 b or not 2 b

[mcreacy]

New feller here, I would like to add a 4" (409) torbo back system heard you need backpressure from the muffler or could I go straight. Could someone set the record straight

[Brian]

what kind of truck is it going on?

welcome to the forum.

[mschn99]

Originally Posted by mcreacy

New feller here, I would like to add a 4" (409) torbo back system heard you need backpressure from the muffler or could I go straight. Could someone set the record straight

if your truck is a 6.0, some backpressure actually helps the EGR system operate, this is something we are just learning with the new calibration...

If its a 7.3, It doesnt really matter, so you can run it completely strait with no worries........Marc

[Banshee34]

WELCOME!!!!!!!

Which year/setup do you have???

[mcreacy]

sorry it's a '03 f350 7.3 cc 4x4

[99Smokin73Stroker]

Straight pipe it. Talk to us with your diesel questions. We'll set you straight...literally! Guys who know nothing about diesel tend to think that the same principles with gas engines go with diesel. They still think they have spark plugs for goodness sakes!

[mcreacy]

thanks for the info, i'm trying to improve my 14 mpg (driving like grandma). I think my 35's don't help any. What else can I do tp improve the mpg.

[99Smokin73Stroker]

a little more air....a good intake with a prefilter if it's a real high flowing one....a chip helps too, 35's don't...lol

[ndurbin]

I say get an aftermarket high flow muffler.........why you ask?........a straight piped PSD drives me up the wall. Cain't describe the sound without looking/sounding like an idiot....lol......but it just makes me want to go nuts.

[99Smokin73Stroker]

The 7.3's aren't too bad, but the 6.0's sound better with a muffler I think.