RSA964993

I was on another thread trying to decide what I needed for my RS America. I have a race set up, race headers with dual straight exhaust. Great sound on a race track but not ideal for the street. Your picture helps because it gives a picture of what looks like a stock set up except for the tip. I'm going to put the stock headers back on and not route/block the heat exchangers because I don't have any HVAC, then the cat, then add the fabspeed primary and fabspeed secondary and hook up to the tip. Any idea how loud this will be? It has to be somewhat quieter than what I have now I'm hoping.

964cabtip

Hi, Jason, thanks for your advice!! is that a turnkey component I can install to introduce the "air leak"? And which ECU EPROM has this particular feature?

911Jetta

Stock set up:



what do you mean "add the fabspeed primary and fabspeed secondary and hook up to the tip."

Do you mean bypass BOTH primary and secondary? (to replace #8, and #9)
That will be very loud...

With the stock headers, most people only bypass one of the mufflers. Bypassing only one muffler gives a great sound too, not too loud. For a little more sound... add a cat bypass. Adding a cat bypass greatly reduces heat in the area, loses 20 lbs, sound great (one notch louder than a single bypass), and provides much better throttle response. Depends on your environmental views...

John McM

I can't work out whether you are serious or not, but I had an after market ECU that over-fuelled, spat flames and gave loud bangs on overrun as fuel exploded in the secondary muffler. It also left a sooty residue over the bumper. It's not a good way to drive and I find it hard to understand why you'd do this intentionally. I removed the system and sold it. Just a nice rumble now.