DPP 4" Exhaust

[KKlepfer]

I just installed a DPP exhaust Saturday and I love the sound and looks I get. I had a fellow CTD owner pull up next to me at a light today. He had an '03 2500 HO 4x4. He asked me if I could feel an increase with the exhaust.



I felt like I had to be honest and told him I really see a difference in EGT's but not speed. I told him the power I really experienced was when I put a fueling box on (EZ). So then he said "you didn't feel any difference w/ the exhaust then". I said, "not really" and the light turned green. So I told him this is what all my mods do together. I broke loose the rear end and smoked my tires as I left the light.



I feel like the truck is actually slower now with the "4 exhaust. I think it's psychological because I'm used to hearing the turbo whine. Now all I hear is the exhaust. Don't get me wrong, I love the sound but am afraid I may have slowed the truck down. Has anyone else had this sensation and is just my warped senses f***%#@ with me?

 

[DocDetonancour]

KK I've seen other posts that the 4" was not a plus for speed? Anyone got a true statistic? Thanks, Doc

 

[LEngles]

Am I missing something here? being a new ctd driver from many gas dodges that I have upgraded. I have measured my stock exhaust and its 4 inches id all the way to the turbo. what would I gain with say a Banks monster 4incher?

 

[mklucas]

LEngles, 04. 5's have 4" turbo back exhaust, the 03 and 04's have 3. 5" post turbo going to a 4" exhaust. You would only gain something by doing away with the cat and/or stock muffler in your case.



Klepfer, can't help you there buddy.

 

[EMD-Run8]

I think it's that the truck has more of a spread of power beyond 2000 rpm's with the aftermarket exhausts which makes the bottom end SEEM less. After drivin' mine awhile and feelin' it out the bottom end seems to be just as strong as before. Stock mine just seemed to go flat at 2000 and didn't seem to change much after that but with the 4"er it just seems to breathe better all around without any significant bottom end loss--if any IMHSOP observation.

 

[Mark Craig]

DPPI Exhaust

KKlepfer,



Glad you like it and enjoyed getting it installed, thanks for your business. Concerning your loss of power, like EMD-Run8 said and I agree I think it's more of an allusion due to the sound you hear and the stock sound. On a dyno especially if you have any type of fueling box the HP is always higher than stock, but you do get that "feel" that it might not be when driving. I have done some G Tech runs with various trucks and when exhaust is added 0-60 etc is always better.



Either way enjoy it and have a good smokin time.



Mark @ DPPI

 

[KKlepfer]

Thanks Mark and EMD-Run8 for your feedback. That is exactly what I was suspecting. I just needed to hear it from others who have done similar mods. I also needed to hear from those who have seen the dyno results or 0-60 times.



By the way, I towed my jetskis to the lake today and I feel the difference with my new exhaust. It's great to be able floor it off the line and not have to worry about EGT's.



When I get my DTT 48RE upgrade I know I'll be pleased by getting all that HP from the flywheel to the tires. Oo.