4" vs. 5"

somebodyelse5 · #1 (**permalink**) 12-25-2007, 05:22 PM

I need to get an exhaust, i was lookin at a 5" aluminized mbrp. I was told that a 4" system is fine but whats your guys opinion? What are you running and how do you like it?

I installed the aFe stage 2 today and am installing the edge tomorrow i think. Im also planning on straight pipe for the exhaust.

5" or 4"????

forddieseltweek · #2 (**permalink**) 12-25-2007, 05:23 PM

5" is over kill unless your pushing major power, I run 4" into 5" with no problems..... and it sounds good too....

redstroker_2002 · #3 (**permalink**) 12-25-2007, 05:25 PM

ya 4 inch all the way!

**SCUFFY828** · #4 (**permalink**) 12-25-2007, 05:29 PM

4 inch is all you need , the biggest problem with the 5 inch is clearance , every 5 inch kit ive installed it has been a hassle to keep it from rubbing everything under the truck, stay with 4 inch

silverF250 · #5 (**permalink**) 12-26-2007, 04:27 AM

If you have a hitch in the bed the 5" is a pain. If I had to do it again I would do 4" in a heartbeat a lot easier to install.

somebodyelse5 · #6 (**permalink**) 12-26-2007, 10:12 PM

is there a big difference in performance? and would it be smart to have the exhaust installed with the chip? it looks like im going with a 4" Banks

***strokin_early_99*** · #7 (**permalink**) 12-26-2007, 10:35 PM

Just two things.

1) Why would you spend the money on the banks when it is over $100 cheaper for the other brands?

2) 5" is not necessary to make big power. The big power guys running the turbos that use the hypermax mounting kits use a 3.5" down pipe. I am not a member of the 500 club yet, but I will be and it will be with a 3.5" DP to 4" intermediate piping to a 5" single stack.

Keep Strokin'