Pass Laguna Seca sound limit in 3.2 seconds!
#31
Rennlist Member
so its the same affect as bypassing this switch and connecting to two hoses??
Dang that would have been even easier
Same set up, SW center bypass had no problems, it did feel down on power though
Dang that would have been even easier
Same set up, SW center bypass had no problems, it did feel down on power though
#32
Rennlist Member
Glad to hear that this mod has worked with the SharkWerks bypass. Has anyone tried this with the GMG GT3 center exhaust? I'm wondering if it will bring the GMG exhaust down to 90db.
#33
Rennlist Member
Also wondering about the RSS X-pipe. I really don't want to bother putting my stock pipe back on, but plan to do just that so there will be no guessing whether I will pass or not.
#34
Rennlist Member
its good for about -5db on the sharkwerks,dont know how much louder RSS or GMG is...
#36
GT3 player par excellence
Lifetime Rennlist
Member
Lifetime Rennlist
Member
^ stock .1gt3/rs will not pass sound. mikymu;'s mod will work though
#37
Rennlist Member
Assuming same holds true for .2 with the cap installed. Can anyone with a .2 please confirm? Much appreciated.
#38
This does cause a small but discernible loss of torque, so a switch that goes from "quiet to "automatic" rather than to "loud" will leave the system functioning "normally" (with the peculiar sound of the exhaust opening up at 4000 rpm) and that helps with the low end of the torque curve, which I find handy for Laguna.
#39
Addict
Rennlist Member
Rennlist Member
Thread Starter
Will be doing the same mikymu intervention on my Z06 this weekend
BTW, My Cup car also passed 92 db at Laguna Seca with Akrapovic exhaust. Not an easy task. I had to install street GT3 side muffler brackets to support the two side mufflers then rig up the street GT3 vacuum solenoid to make the muffler valve work. I blast through T5 at over 7K RPM and the only black flag was for the poor soul behind me that could not figure out why his street GT3 could not pass sound
Tapping into vacuum line behind intake in the Cup
mikymu Laguna Seca switch for the Cup
BTW, My Cup car also passed 92 db at Laguna Seca with Akrapovic exhaust. Not an easy task. I had to install street GT3 side muffler brackets to support the two side mufflers then rig up the street GT3 vacuum solenoid to make the muffler valve work. I blast through T5 at over 7K RPM and the only black flag was for the poor soul behind me that could not figure out why his street GT3 could not pass sound
Tapping into vacuum line behind intake in the Cup
mikymu Laguna Seca switch for the Cup
#41
Anyone know if .2 GT3RS with Sharkwerk bypass with this valve closed setup will pass sound at LS?
I had TC Design wired a switch along with a turndown pipe. Eager to test it out this Sunday.
I had TC Design wired a switch along with a turndown pipe. Eager to test it out this Sunday.
#42
You'll want the "turnip" (turn up) pipes from Sharkwerks -- you can get those through Tony at TC Design. The switch will suffice, just note that it will cost low-end torque when in "quiet" mode.
#43
Rennlist Member
#44
Rennlist Member
#45
Three Wheelin'
Thank you Larry. Getting settled in CA (finally back!) and looking forward to meeting some of the west coast Rennlisters and running some of the CA tracks. Beautiful car, BTW.