DIY exhaust mod

[Kyle]

okay after being bored of how quiet my hummer was i decided to chop the muffler off and boy was i surprised!!! it sounds perfect, when you start it up its got a nice throaty deep idle. When driving around normally you could never tell theres no muffler, theres no drone since the resonator is still there and when the car is in lower rpm you cant hear exhaust at all. when you get on it tho it gets loud! ill post up some photos!

 

[Kyle]

Sent from the top of a mountain in my h3

 

[BigHoss]

Post up a vid! Any noticeable low end loss?

 

[Kyle]

Post up a vid! Any noticeable low end loss?

nope! having the CAI helps a lot! and yea ill post one up!

 

[BigHoss]

Hhmm wonder if not having an intake will? Yea definitely post one I'm curious for the sound.

 

[JonBishop]

i was wantin to do this too but idk if the CA smog regulations will be cool with it, if i knew id do it tomorrow! looks good too! great job

 

[06 H3]

Johnbishop if you want cut it off and I can weld on a flange. Then bolt it on for smog

 

[chad]

I like it. Funny thing, I went to a muffler shop today about mine. Didn't like what they told me though.

 

[Kyle]

i was wantin to do this too but idk if the CA smog regulations will be cool with it, if i knew id do it tomorrow! looks good too! great job

There's new smog rules, if you car is 2000 or newer you no longer have to have the smog guy plug the sensor in the exhaust pipe!! Hence the reason i did this!!


Sent from the top of a mountain in my h3

 

[Kyle]

I like it. Funny thing, I went to a muffler shop today about mine. Didn't like what they told me though.

What did they say?



Sent from the top of a mountain in my h3

 

[Expendable]

There's new smog rules, if you car is 2000 or newer you no longer have to have the smog guy plug the sensor in the exhaust pipe!! Hence the reason i did this!!


Sent from the top of a mountain in my h3

but visual inspection still exists in which if the smog guy does the visual you will fail. plus there are rolling smog tests that are deployed 'randomly' throughout CA.

 

[chad]

What did they say?



Sent from the top of a mountain in my h3

they wanted $250 for work and they keep the parts, its really loud and messes up my sensors

 

[JonBishop]

Johnbishop if you want cut it off and I can weld on a flange. Then bolt it on for smog

well looks like I might be doing this thank you chris

 

[algin5109]

Watch out for exaust fumes entering rear area without that pipe out near the bumper. Especially at idle

 

[Kyle]

Watch out for exaust fumes entering rear area without that pipe out near the bumper. Especially at idle

im going to get the pipe bender and bend it downward!!!

 

[chad]

im going to get the pipe bender and bend it downward!!!

i dont think that will make a difference as the gases will still rise, i would get a clamp and some pipe and extend it towards the rear of the truck.

 

[Corey Barnes]

I chopped mine of as well and ran duals with 3 1/2" tips. Sounded good when you got on it but but wasn't loud enough at idle for me, didn't sound any different than stock at idle. (Previous ride was an F-150 5.4L with straight pipes). So I debated putting a flowmaster 40 on instead of the resonator. Ended up just chopped of the resonator and put a piece of pipe in place of it. I was afraid it would be to raspy and too obnoxiously loud with the 3.7 but it is anything but raspy and sounds great with little drone inside! It's perfect! I'll try and post a video of it by next week waiting on a new iPhone my mic is blown.


Sent from my iPhone using Tapatalk

 

[Kyle]

i dont think that will make a difference as the gases will still rise, i would get a clamp and some pipe and extend it towards the rear of the truck.

alright ill do that

 

[Sneakysilver]

Well mine cut! Going to the auto store later after work to get some pipe and maybe a tip to keep it looking classy!

 

[BigHoss]

Video or it never happened!

 

[Sneakysilver]

Video or it never happened!

Alrighty! Ill take one tonight, don't a have a before video but there's one on YouTube, ill make one after the cut you want revs an some In cab drive drone?

 

[BigHoss]

Sure.

 

[ArtHummer]

Watch out for exaust fumes entering rear area without that pipe out near the bumper. Especially at idle

I'll second that.
It is very dangerous to leave the pipe under the body. Not a good idea to leave it like it is... If you take the muffler off, make sure to extend the pipe outside from underneath.

 

[Kyle]

MAKE SURE TO ADD A PIPE THE SHOOTS OUT THE BACK, after driving on the freeway all day the back plastic on my bumper melted! Im going to fab up a extension piece so it doesn't melt anymore


Sent from the top of a mountain in my h3

 

[06 H3]

Am I going to fab an extension piece and weld it? :emb: