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VF2 SS - Black edition

lmoengnr

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They went from 307 to 340kw by playing with air intake and exhaust...
307 was LS2 output, LS3's were 317, 325 and 340.
317 version had SS/SSV exhaust center section, HSV headers and mufflers.
325 version had HSV 2.5" center section.
340 version had bimodal intake and revised headers with larger outlet.
 

Ron Burgundy

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307 was LS2 output, LS3's were 317, 325 and 340.
317 version had SS/SSV exhaust center section, HSV headers and mufflers.
325 version had HSV 2.5" center section.
340 version had bimodal intake and revised headers with larger outlet.
My bad....I meant 317 not 307
 

Derekthetree

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Yeah mines the 340 SV. I can't see the bimodal intake doing much, surely all in the headers.
 

VF Ute

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After doing some mods to my ute recently, I left the MSE off. My 340 HSV headers and 100 cell cats (HSV centre section) have resulted in a slightly louder exhaust note. I thought the VCM OTR would give me a good induction sound to compensate but I'm a bit disappointment. I think I miss the MSE but I'm not a fan of how they look. I'm wondering if they can be modified to run lower to the frame rail and then come up near the booster and plumbed in. Maybe I'll have a look at this in the future. I'm getting a tune later next month so hopefully with a bit more get up and go I'll be happier with the mods I've done.
 

lmoengnr

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After doing some mods to my ute recently, I left the MSE off. My 340 HSV headers and 100 cell cats (HSV centre section) have resulted in a slightly louder exhaust note. I thought the VCM OTR would give me a good induction sound to compensate but I'm a bit disappointment. I think I miss the MSE but I'm not a fan of how they look. I'm wondering if they can be modified to run lower to the frame rail and then come up near the booster and plumbed in. Maybe I'll have a look at this in the future. I'm getting a tune later next month so hopefully with a bit more get up and go I'll be happier with the mods I've done.

I think, for maximum effect, the tube should be as short as possible.
 

VF Ute

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You're probably right, I think it could be done with an extra 300-400mm pipe extension. Might look at it one day. Not overly pressing.
 

Ron Burgundy

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Here is what MSE looks like inside. Basically funnel shaped chamber with rubber membrane.

The air does not pass through.

My guess that the membrane eliminates high frequency sounds based on what I read. I am guessing that removing or replacing the membrane with other material would affect the sound...and possible vacuum leak ;)

All in all not very high tech ;)
 

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VS 5.0

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Here is what MSE looks like inside. Basically funnel shaped chamber with rubber membrane.

The air does not pass through.

My guess that the membrane eliminates high frequency sounds based on what I read. I am guessing that removing or replacing the membrane with other material would affect the sound...and possible vacuum leak ;)

All in all not very high tech ;)

Have you tried it without the membrane ?

For science of course.
 

Ron Burgundy

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Have you tried it without the membrane ?

For science of course.

I did not. I am guessing removing the membrane will result in vacuum leak as the rest of the piping is open....

There is also some foam stuck at the end of the tube where it connect to firewall. This probably affects the sound too. I will try and experiment with removing it as this would not result in vacuum leak.

It's only at the end of the tube and 4-5cm long. It's lightly glued at the bottom but easy to pull out :)

Btw I have spare MSE setup I am playing with. I will always keep one non modified.

https://www.camaro6.com/forums/showthread.php?t=501964
 
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Skylarking

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Here is what MSE looks like inside. Basically funnel shaped chamber with rubber membrane.

The air does not pass through.

My guess that the membrane eliminates high frequency sounds based on what I read. I am guessing that removing or replacing the membrane with other material would affect the sound...and possible vacuum leak ;)

All in all not very high tech ;)
Also a guess on my part but like a drum and a flute, which also don’t look high tech due to familiarity, understanding and controlling how the sound is propagated through the MSE piping probably is...

I‘d also guess one reason for the diagram is to seal the intake system from the cabin while the foam at the end to the pipe would attenuate the sound a little....

Makes me want to grab a spanner, remove the foam and go for a drive... but its late and I don’t want to be on the road at night with the hoons that frequent our suburb :eek:
 
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