My gsr makes that noise too! But I feel like it's a combination of the secondaries opening and the heat shield rattling. Nice find by the way...keep her forevverrrr.nothing for the near future. There is a rattle from some heat shield or something that I need to fix, but otherwise I'm strapped for cash lol. I want to go for a 4 door type r clone and definitely maintain the OEM feel to it. When this engine craps out, Im gonna swap it to a C5.
My gsr makes that noise too! But I feel like it's a combination of the secondaries opening and the heat shield rattling. Nice find by the way...keep her forevverrrr.