Jump to content
SAU Community

Recommended Posts

Except I had an 80mm Fujitsubo Legalis R pass noise emissions while flowing 300+kw. There are good exhausts and there are cannons. :P

Yep; they are a great thing; I'd much rather have it on, and never get hassled.

Using a sound meter app, and in the garage, with a bit of reflected noise; mine runs 80db at idle, and 90 at 3000rpm.

When I built the split system for my C34 I was looking at using 2 Varex mufflers side by side, but the cost was going to be too much. So I was looking at what else is available and found Dynamax VT mufflers which for 2 was less than the price of 1 Varex.

http://www.dynomax.com/mufflers/dynomax-vt-mufflers

These use the same sort of thing, a butterfly valve but they are spring loaded. At light loads they remain close and under full noise they become near enough to straight through. They are nice and short in height and don't look any different from a standard muffler from the outside, which for me is plus. Once the car is warm, it's quieter than factory, but with a slight rumble to it. Full noise and it just screams.

Here's the only pic I have that you can see the valve in mine.

null_zpsfaeeeca3.jpg

Lots of clearance when tucked up high.

null_zpse1aefb61.jpg

When I built the split system for my C34 I was looking at using 2 Varex mufflers side by side, but the cost was going to be too much. So I was looking at what else is available and found Dynamax VT mufflers which for 2 was less than the price of 1 Varex.

http://www.dynomax.com/mufflers/dynomax-vt-mufflers

These use the same sort of thing, a butterfly valve but they are spring loaded. At light loads they remain close and under full noise they become near enough to straight through. They are nice and short in height and don't look any different from a standard muffler from the outside, which for me is plus. Once the car is warm, it's quieter than factory, but with a slight rumble to it. Full noise and it just screams.

Here's the only pic I have that you can see the valve in mine.

null_zpsfaeeeca3.jpg

Lots of clearance when tucked up high.

null_zpse1aefb61.jpg

Thats cool was it easy to order, so the site

Slightly off topic here; do you guys get randomly pulled over in your M35 Stageas? Spoke to a friend who drives an import and he said two things which may have explained why I spefically got pulled over:

- driving along Princes Highway at night where it is very common for street racing/traffic light drags to occur

- though the M35 Stageas look understated, they are starting to build a bad reputation by cops who specifically target imports

Nope, the only time I have been singled out and pulled over I deserved it.

Distant police car in the opposite lane caught me on a near-deserted road... momentarily airborn off the down side of a bridge... doing near 150kph in a 100 zone... D'oh (yes we had to be somewhere urgently, but still...)

  • Like 1

Distant police car in the opposite lane caught me on a near-deserted road... momentarily airborn off the down side of a bridge... doing near 150kph in a 100 zone...

All the coppers think it is a volvo anyway, especially the AR-X from a distance...

post-76144-0-45079000-1403224717_thumb.jpg

  • Like 2

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Thanks Duncan! Yeah it's street use for me only. Maybe occasional track day. Any difference in noise when running with the two pumps? I would expect the lift pump to be more quiet than the main pump so hopefully not? And yes, unfortunately quite a big price difference to the simple hanger setup. Though I'm usually willing to trade money for better reliability and future-proofing. Buy once, cry once and all that. I'd be very happy to never have to deal with fuel pump / wiring issues again  
    • The old manifold was quite under the GTR strut brace.  The new manifold is quite [unknown] the GTR strut brace. The GTR strut brace was needed to clear the bonnet vents. The Old strut brace will almost certainly clear the new manifold, but not the bonnet vents. The old strut brace will almost certainly clear the new manifold, and the new bonnet without vents. But I am hoping the GTR strut brace clears the new manifold :p
    • On the bright side, at least you knew that it happened and remedied before anything happened. A friend of mine just took his Fiat 124 to a shop for an oil change and they didn't tighten the oil filter housing properly. 4.5 quarts spewed out and even after refilling + tightening the cap the engine has a tick now.
    • So, more pain. The FAST manifold is a little larger than the stocker. This is problematic because there really wasn't much clearance to begin with, so going from 'barely enough' well into 'no' is sad based on the external dimensions of the thing, even though where it bolts to the head is the same. Result is the fuel rails sit a good 25mm higher, and this is a bit of an issue with the wiring that runs behind the motor, and the fuel lines, and everything else. When pushing the manifold on, it required a huge amount of force to crush wiring looms to fit it, sensors like the MAP sensor are about 1mm from the firewall, and the FPR just has to bend ABS lines to be forced into place. After some brainstorming and some sad drinking, the loom for some reason ran from the grommet behind the ABS sensor, then to the driver side head, then back to the passenger side head. So all of this was pulled back and stripped, a few wires cut and rejoined, so that the 'branch' was now on the passenger side's head as below: Before you basically couldn't see anything behind the driver head. This is much improved! The MAP sensor is now pointing up (instead of at the firewall) Brackets have been made up for the rail. The rails are for a LS1, the manifold is designed around a LS2 as it's base. Which of course has slightly different bracketry and water pump clearance, hence the mods people need to do. Should be hopefully mounted tonight. I spent money on a new FPR that is slightly more compact than my Turbosmart FPR1200. The gauge has also been moved to the rail. There's also apparently an ORB to AN Union instead of the adapter, because the ~25mm of the current adapter is going to make the difference. Provided this all goes together and arrives today, it'll be the totally not stressful attempt to start it.
×
×
  • Create New...