I have a 02 F350 pretty much stock. I just installed the 6637 and have a superchip tuner. Which is the better choice for exhaust? Is the 5in too big unless I do some other mods?

 

no real difference between the two performance wise. Just a different sound. Ilike my 5 inch with no muffler.
Keith

 

keith, is that 5" turbo back?

 

5" and you can say you have a cannon under your truck.

 

four inch down pipe then 5 all the way out

 

i have the 5" too .. LOVE it .. helped a buddy put a 4" on today, on a 6.0L .. both sound great .. personally, I love having that sewer pipe hanging underneath. Both mine and his came from MKO diesel .. best price and customer service you'll find.

My advice, after you install it, after a month or so after the film burns off, paint it with high heat or BBQ grill flat black paint. I didn't like the look of the silver pipe showing .. just the 6" tip

 

Save some money and save some room underneath the truck go with a 4".

 

when i finally get around to sellin my 6.0 and buying a 7.3 i'll be going with a 5" no muffler, no tip, i like the look of just the massive pipe comin out behind the wheels

 

Zero benefit in performance from 4 to 5 inch. Actually you might lose a small amount of low end power with the bigger down pipe. Go with what ever floats your boat. The performance diff is so small youd probably never notice.

 

Thanks for the info - The price diff. not being too much I guess Ill go w/ a 5".

 

who all makes the 5"? I just know of flopros

 

if i could do it again i would get the 5in just because it sounds so goooooood! my friend and i installed the 5in on his 99 psd and it sounds awesome. i bought the 4in system before i knew about the 5in..........oh well.

 

5" exhaust - http://stores.ebay.com/MKO-DIESEL-PERFORMANCE

 

that who I got my from

 

MKO 5" strait pipe 6" tip cleaned and painted black before the install last october to prevent rust..still looks good as new