YES my EVO is loud in other words vibrates everything around. For example if you are walking next to the car while it’s on idle your ears will hurt not because its loud it just vibrates. I have done everything I can to make it quieter with no luck. Here what I have

Turbo 3071
SS manifold
TBE with hallow cat helix exhaust
koyo radiator


I have checked my exhaust for leaks and I have found none...

The sound is louder after my hallow cat but I don’t want to sacrifice power (I want to keep my hallow cat) and I don’t know what to do. any ideas will be great but I don’t want to loose power.

I know it might be impossible but i had to ask.

Thanks

 

All your mods are noise adders.

SS header - noise adder
Larger turbo - larger exhaust wheel means the exhaust pulses are less chopped up when exiting the turbo = more noise
hollow cat - noise adder

The only thing I can suggest to quiet things down is to add resonators and change to a quieter muffler. Those two shouldn't rob power too much.

 

I'll bet the hollowed cat is making the vibration. Try a cat-delete pipe, and also check your DP for any scuff marks, they can hit other parts once they heat up and expand.

 

quieter muffler or silencer on the end

 

You can try the WORKS resonated test pipe.

 

Mhyar:
Stop being a baby and deal with it! Man do you tell you wife she is too loud too

Chris

 

sound clip?

 

I will get you guys a sound clip today...

 

chris I dont care myself but people and friends started to get mad. I mean its vibrating the house. Its sounds like a big *** V8 with no headers. I can handle it but they cant.

 

Strange that it vibrates that much. I have a straight pipe and it sits fine, not to loud and no vibration. You might want to try running a pipe in that hollow cat to cut out the resonation it may be causing.

 

My car in stock trim rattle the pictures in my house when I warm the car up in the garage with the garage open!

Yes, it is a cheap so ca house, but then again, most houses in so ca are cheap too! Start construction on monday, finished tuesday!

What type of muffler system / cat back are you running?

 

ok i got some sound clips. First one is when the car is warming up so its louder. the other sound clips are taken when the car is warm.



**** the WMA (AVI)are invalid here as an attachment. Do you guys host them or something? Thanks

 

you'll be popular with the gals.

 

Chris will host them guys. They will be up soon

 

the helix exhaust is loud.