Exhaust modification

[vr2turbo]

Let's see how it goes. Until I get the car back I won't know how best to proceed.

We got a MIG welder and DIY......hhahhahahhahaha

 

[Izso]

We got a MIG welder and DIY......hhahhahahhahaha

who has the welder?

 

[vr2turbo]

who has the welder?

Sorry, wrong tense. Should be we "get"...lol
I only know Joe has but that is in his work place.....lol

 

[WilsonTHarv]

Guys,

I have a 3" straight flow exhaust setup on my turbo car. I have a mid-box resonator (pretty large one and is straight flow) and a pretty large straight flow rear muffler. But it's still loud and the droning at 2.6-3k rpm is killing me since I'm in that rev range a lot.

I've been reading up about side-branch resonators and helmholtz resonators. It's those weird branch exhaust add-ons that apparently take away the droning by cancelling out certain frequencies depending on length of the resonator.

Anyone tried this with positive results?

View attachment 571443 View attachment 571444

I have seen a video on youtube about installing helmholtz resonator on a galant vr4 to reduce drone ... he get a quite positive result with it ,maybe you could check it out if u haven't watched it .

 

[ixeo]

if I had to guess, from my own experience it’s because the diameter of the pipe is on the big side thus it drones.

 

[Izso]

I have seen a video on youtube about installing helmholtz resonator on a galant vr4 to reduce drone ... he get a quite positive result with it ,maybe you could check it out if u haven't watched it .

Yeah thanks. Will look at that

 

[^pomen_GTR^]

if I had to guess, from my own experience it’s because the diameter of the pipe is on the big side thus it drones.

told him to reduce the size... but he didnt want to...

 

[WilsonTHarv]

Yeah thanks. Will look at that

Here's the link

 

[6UE5t]

Use mugen style twin loop muffler at the rear, it sounds soft/not droning but yet still sporty. I'm using that type of muffler on my Mark X and pretty happy with them but not sure if it is suitable for high powered turbo cars and if it's available for big 3' pipes like yours.

 

[vr2turbo]

I think you original muffler the fiber glass all gone already. Like my VR when new it does not drone that bad, but after years of use the drone has become louder.....lol

 

[gunnerzz]

I think you original muffler the fiber glass all gone already. Like my VR when new it does not drone that bad, but after years of use the drone has become louder.....lol

makes me remember the old days seeing rxz riders DIY replace the fiber in their muffler.involves lots of digging,knocking, and sometimes fire...

 

[vr2turbo]

makes me remember the old days seeing rxz riders DIY replace the fiber in their muffler.involves lots of digging,knocking, and sometimes fire...

For car, there is a muffler model where the ends can open up. Lock down by bolt/nuts. This is for replacing the fibers.....

 

[parakey]

I think you original muffler the fiber glass all gone already. Like my VR when new it does not drone that bad, but after years of use the drone has become louder.....lol

Is your spare tyre in the trunk? Without it, the drone may get worse

 

[vr2turbo]

Is your spare tyre in the trunk? Without it, the drone may get worse

Everything in, actually carrying plenty extra weight. Spare tyre, tool box, water, shopping bags, trekking sticks, jumper cables, extra spark plugs, etc.....lol

 

[christ]

Guys, sorry to hijack this thread. Any recommended places that make good custom exhaust system? Anyone here has any experience dealing with shops like racetag, mfr, supercircuit, etc?