truck loudness

[skowpowerstroke54]

I have a question about the exhaust loudness of the obs trucks... i have a '96 f250 with the 3.5 inch stock exhaust except for a gutted cat and a muffler delete... my buddy has a 2002 super duty 7.3 and he just has a muffler delete and his truck is easily twice as loud as mine from idle to higher rpms... his has that blat at higher rpm's that mine doesnt.. so my question is... why is there such a difference? Could it be my pancake shaped downpipe? both trucks have chips and intakes

[Big Bird]

down pipe would be a good reason, also do you have the stock intake box on yours still? If you do, then do a DIY intake using the napa filter and it makes some difference too.

[skowpowerstroke54]

I have a DIY intake on mine already... he has a K&N on his superduty

[powerstroker52]

mine is the oppsite, my buddy has a 99 superduty and his truck sounds terrible compared to mine

[skowpowerstroke54]

what do you have leading up to your stack?

[GM Duraturd]

My OBS is just as loud if notlouder than most straight piped SDs. It has the 3" downpipe, to a short 4" section and then 5" from under the cab to the stacks.

[powerstroker52]

regular downpipe then it went to 4 inch piping straight to the stack, thats all

[skowpowerstroke54]

hmmmm i think i need a new downpipe

[cndrm]

Definitley need a new downpipe. The stock, flattened DP that came on the OBS trucks is POO. I'm working on getting a 3" DP for my truck, as I already have a 4" exhaust. I'm probably going to get one from Performance Truck Products Diamond Eye 3" Down-Pipe Kit 94-97 7.3L Ford (Aluminized) | Exhaust Components | 94-97 7.3L Power Stroke | Ford Power Stroke | Diesel Power | Performance Truck Products

mike

[Chunkspowerstroke]

My truck sounds good I think. But if you are going to put a down pipe in there a real pain in the a$$