I know this is a newbie question but is there a huge difference in egt's, performance, sound between 4 and 5 inch?
1.There will be little to no difference in EGT's under 600HP. 2. Performance will be about the same, some report that they feel a loss with 5", some don't. Personally, when I added my 5" system to my stock truck, I could feel a gain at the seat of my pants. 3. Big difference in sound. 5" is much deeper and boomier than 4". The best way I have come to describe the difference is 4" sounds like a B series Cummins with a performance 4" system, 5" on a B series sounds like an N14L without a muffler.
waytogo I have a 2005 dodge with the 5" monster exhaust, no difference in egt's until I was pulling a 35' stock trailer then they stayed much lower than the 4" that was on it (about 2-300* lower). The sound at idle is no different but when you put your foot in it sounds just like a freightliner, just be sure to put a muffler in otherwise you will get lots of hiway drone.
Thanks for the input, right now im straight pipe so it sounds like a bi-plane when im towing up hills. Getting tired of the raspy noise and high EGT's
Personally I prefer the sound of a Dual 4" kit than a 5" kit, IMO the 5" gets a bit of a drone at certain RPM
Got my 5" in and i love the sound, It does sound like a peterbuilt. EGT's are a bit lower but i havnt towed yet. I did feel a bit of a power increase, overall im happy with it!imp:
I just had a 4 in stainless steel Magnaflo,put on mine last week.I love the difference it made.waytogo
id like 2 get a 5" exaust on my 06 Powerstroke...heard the 5" on my stock engine iz not good 4 it ???
I dont see how it would be bad for it. Some people claim a loss of power. I guess because there isnt enough backpressure on the turbo? I definetly felt a power gain over my 3" straight pipe.