Should I Keep Factory Cat Back Exhaust or Chop it up?

SkiDooNick700 · July 2, 2018

Hey guys,

Just looking for some opinions to see if anyone can change my mind, or at least get me thinking a bit more. I just got my Venom 250 in the mail today and next week I'll be dropping the truck off to get it installed. I've been pretty dead set on having them cut the factory cat back off and then run 3 inch pipe and fit this muffler in somewhere along the line.

Why should I do that?

Why shouldn't I just have them weld in this muffler to the factory piping, delete the resonator, and delete the flapper? Seems like at that point I'm really hacking up the exhaust!

Thoughts??

damnthetorpedoes · July 2, 2018

I'm sure you know this, but the 6.2 uses 3.5" piping all the way until the resonator. After the resonator its 3" for the last 1-2' of pipe. Not sure why GM did this.

I would hack up the 3.5" stock piping before changing it out to 3" but that's just me. is the Venom 250 a 3" or 3.5" muffler?

I put a 3.5" magnaflow on mine but its a little on the quiet side. I'm considering removing my resonator but having trouble finding someone to bend 3.5" piping to replace it with.

SkiDooNick700 · July 2, 2018

20 minutes ago, damnthetorpedoes said:

I'm sure you know this, but the 6.2 uses 3.5" piping all the way until the resonator. After the resonator its 3" for the last 1-2' of pipe. Not sure why GM did this.

I would hack up the 3.5" stock piping before changing it out to 3" but that's just me. is the Venom 250 a 3" or 3.5" muffler?

I put a 3.5" magnaflow on mine but its a little on the quiet side. I'm considering removing my resonator but having trouble finding someone to bend 3.5" piping to replace it with.

Yea, I am aware it is 3.5 inch piping. The Venom 250 is a 3" muffler, so, that's why I'm ok with reducing it to 3" for that entire length. I don't feel the 3.5 to 3 inch reduction will really hurt anything especially since I'm stock.

SirenRed16 · July 2, 2018

Hey guys,

Just looking for some opinions to see if anyone can change my mind, or at least get me thinking a bit more. I just got my Venom 250 in the mail today and next week I'll be dropping the truck off to get it installed. I've been pretty dead set on having them cut the factory cat back off and then run 3 inch pipe and fit this muffler in somewhere along the line.

Why should I do that?

Why shouldn't I just have them weld in this muffler to the factory piping, delete the resonator, and delete the flapper? Seems like at that point I'm really hacking up the exhaust!

Thoughts??

I hacked my factory exhaust and have no regret. I had my muffler replaced with the Carven R and remove flapper and resonator. Who is going to crawl under the truck and criticise the hack job on the exhaust? I'm planning on replacing everything with a Corsa sport cat back and at that point the stock exhaust is going to get scrapped.

Sent from my SAMSUNG-SM-N920A using Tapatalk

SkiDooNick700 · July 2, 2018

So, maybe cut out the factory muffler, swap in the Venom 250, then just run 3 inch pipe to where the stock pipe downsizes to 3 inch. I don't think it'd make much sense to have the pipe size changing from 3.5 to 3 for the muffler, then back to 3.5 til the resonator, then deleting that out and running 3 inch to meet with the factory 3 inch.