The under tray isn’t the issue. The valve and plug are on top of the muffler and it’s difficult to get your hands up in there.
I will order the pigtails. Thanks Rick.
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The under tray isn’t the issue. The valve and plug are on top of the muffler and it’s difficult to get your hands up in there.
Sorry I think I asked the question incorrectly, I would like to know if the car with the baffles closed performs OK with the extra back pressure, is the computer adjusting OK or does the car run a little choked or any other symptoms with baffles closed and in track mode with wide open throttle.Yes they work on track. That’s the whole point of this thread.
Not sure of what's going on there but I'd take it to your dealer and have them look at it. Make sure the Grimm modules are not on the car.
I was referring to the 30% open. I think they should be fully closed. I ran LS with resonator delete and the Grimm modules and passed 90 db.
Doubtful you will pass sound at Laguna with the valves partially opened. I failed sound there once with them fully closed. It was one of those days with low clouds that amplifies sound. Been there about six other times on clear days and I have had no problem passing sound with them shut. Will be ar Laguna again on Oct 21.