As you longer-time members may remember, I've been working to quiet the drone of my cat-back borla exhaust for 987.1 - and my last word on it is I'm finished and it's still too loud for my taste.
Since I have a few past attempts at different tip configurations on the shelf I decided to go back to the pig-snout I built from a 2--->1 merge collector framed by the trapezoid stock CS tip surround ... I wanted the 2 cylinder banks joined to reduce drone and enable some exhaust gas scavenging.
The main challenge is finding mufflers which would fit and could be joined by off-the-shelf bends and some tube reclaimed from the factory CS exhaust, gathering dust since 2010. My fab skills are not great.
The Plan was to build it on the car, tack-weld the pieces together and then have it welded properly.
After looking at a *lot* of muffler brands, Googling until my fingers were blue in the face and reading Amazon reviews I decided on a pair of Flowmaster HP2 Shorty mufflers (12" long body) and two Vibrant Performance ultra-quiet resonators - one of each for each bank of 3 cylinders.
The pieces ...
Tip:
Muffler and resonator:
The HP2 would extend straight towards the rear bumper cover, a small radius 90 degree bend would follow and the the resonator would attach to that - perpendicular to the long axis of the car ... each side would then terminate into the Y-collector / tip assembly.
And the result:
more details in the next post - stay tuned!
Since I have a few past attempts at different tip configurations on the shelf I decided to go back to the pig-snout I built from a 2--->1 merge collector framed by the trapezoid stock CS tip surround ... I wanted the 2 cylinder banks joined to reduce drone and enable some exhaust gas scavenging.
The main challenge is finding mufflers which would fit and could be joined by off-the-shelf bends and some tube reclaimed from the factory CS exhaust, gathering dust since 2010. My fab skills are not great.
The Plan was to build it on the car, tack-weld the pieces together and then have it welded properly.
After looking at a *lot* of muffler brands, Googling until my fingers were blue in the face and reading Amazon reviews I decided on a pair of Flowmaster HP2 Shorty mufflers (12" long body) and two Vibrant Performance ultra-quiet resonators - one of each for each bank of 3 cylinders.
The pieces ...
Tip:
Muffler and resonator:
The HP2 would extend straight towards the rear bumper cover, a small radius 90 degree bend would follow and the the resonator would attach to that - perpendicular to the long axis of the car ... each side would then terminate into the Y-collector / tip assembly.
And the result:
more details in the next post - stay tuned!