Well, mom and dad finally sold our 98 Chevy 6.5L and our 00 Burb and are picking up an 04 Crew Cab Shortbed 4x4 LT Chevy Duramax/Allison. They looked at an 03 Cummins HO/Auto, but didn't like it (they are die hard chevy fans).

My question is can I put my old 4" muffler on there? I know I'm gonna have to get some adapters to make a 4" muffler fit on a 3" pipe, but can I do it? I don't want them wasting their money on a flowmaster dual exhaust again and they won't spend $400+ on an exhaust.

What kind of intake upgrades are there also? Anything cheap besides a K&N? This truck will be towing a 10K lb horse trailer at least once a week.

Should I get them a boost and EGT gauge? They won't chip it but I know the Dmax's run kind of hot and I want to make sure that this engine lasts a long time. How bout just an EGT gauge?

Thanks for any info yall can give me.

 

Afe makes a nice set up for the Duramax. A buddy of mine added it 2 weeks ago, and says it works great. They had two types a stage 1 and a stage 2.

 

Really don't see any EGT probs with the factory D-Maxes. The exhaust will flow quite a bit of HP, regular juice (90HP), will work fine with stock exhaust, do replace muff with a part from FLO PRO on some trucks. The intake is a restriction, I only use the AFE intake systems. Contact for pricing.
Chace