which ever one you want, but most people who want to get quick power on a budget get a 4 inch exhaust

i got a 5inch on mine and i love it its sooo loud

 

i was going to go with 5 but after reading your post and some others i was thinking four would work for now

 

i just have my stock 3.5" exhaust gutted... it only cost $100 (w/tip) depending on if you put a tip on... my friends say my truck sounds like a jet taking off when getting on it... while towing its hard to think at 75mph... and kicking it down at bout 30mph next to a car or truck it makes my ears ring if the windows are down... i had the same setup on my lb7 and my friends could here me comin from up to 2 miles depending on the day

 

straight pipped or muffed?

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straight pipped?

 

I had an 03 Dmax with 4" Straight Pipe and it sound great. The 03's didn't have Cats so I just went with a 4". We have a good 4" system that includes enough pipe so if down the road you want to remove the Cat then you can.



Luke

 

yes sir

 

nice!

so i think im gunna go with the 4" MBRP turbo back no muff, but since NY does emissions testing im gunna keep the cat on, is she still gunna have a deep grumble?

 

yep :upup:

 

NO '03 d-maxes came with Cats?

 

alright great, and if im not happy ill just cut the cats off, i got about 10 diff buddys that are all mechanics and love to do **** like that, itll only cost me a 30 pack haha.