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Yes,Soul valved side deletes and M&M center delete so no mufflers
There was a lengthy side delete thread a while back and I posted quite a bit of info
Not all side deletes match up to a center delete-
Yes,Soul valved side deletes and M&M center delete so no mufflers
There was a lengthy side delete thread a while back and I posted quite a bit of info
Not all side deletes match up to a center delete-
Does the valves actually make a difference in the no muffler scenario? Look at the pipes it seems there is no difference between the two paths(open vs closed valve).
Yes, the valves make a difference. If I'm driving mellow I leave them closed, and especially warming up as I drive off. Once I'm driving I usually keep them open, and close them to use the phone.
I've posted the pic of the Super Cup exhaust-mine is sort of like it except I have the valves-but Super Cups probably have 100 cel cats or none at all-so I'm close to the sound of some of these Rallye cars. But with them open and just touching the gas pedal it's not hell on earth. It is if you're wide open tough
Also, I did it for dropping the weight and I suppose the improved cooling and air flow. The only way to tell if I'd like it was to install it and see what it's like. On the 991 forums quite a few members did the same thing, but I'm told the 991 cars are quieter inside probably due to extra insulation
FWIW, I installed the Valvetronic controller and it's nice to be able to switch the valves on/off. It is an easy install and only took about 5-10 min. It works great. For anyone who is considering opening your valves full-time (regardless of how you do it), I highly recommend doing this mod! The aural benefit is totally worth any minor side effects. Uncork the sound of your glorious engines.
With this controller, I supposed the 2 modes are “stock / variable” and "always open"? Is that correct?
02-22-2021, 04:23 PM
Just kidding. But in the spirit of Rennlist: https://valvetronic.com/products/por...lve-controller
