| Did you take any pictures of what the inside of the housing and spring conditions were? - There is no spring inside the OEM recirc. At least there wasn't any spring inside when I cut these open. Judging by the metal disc attached to the diaprhagm, I'm assuming it's a mass loaded design, kinda like a passive radiator. How recircs work The diaphram looks like it's in pretty good condition, did you test the original spring and compare it to the new? - Nope Did you do a functional test of the valves to see where they opened at before & after installation? - Nope, this mod won't change how they open or when, just reduces the resonance they introduce into the intake plumbing. Are there replacement diaphrams included in the kit? - Nope, not needed unless the factory ones are torn, and I have no idea how that would even happen. Are there a range of different springs available for adjustment of opening pressures? - Brett may have others available, but these are the ones he decided worked best after testing.

"I'm glad I have the MSP mani's." - jschrauwen 22:20:13 06/10/08"...Downpipes own. They own everything...anything...all there ever was and will be...they should be stock on all cars. Screw the environment, emissions, noise! I love them...I shall name my first-born after them with glee..." - SeedyRom 05:13:20 10/03/02 "i love the cock" - genic 22:20:47 09/25/03 "I hope you get fucked in the ass with a pringles can." - ni[X]it 14:53:53 02/02/06 "Either ignore him or beat him up. Anything else will be over his head." - Marshall 12:28:23 08/18/04 "i've got to the point where i can drive the Z at its limits and i want more" - shadowZ 16:29:56 08/31/04 "I was way more timid then than I am now about getting in there and yanking on things." - TT XTZ 13:30:34 07/25/05 "Just ran out to get some knee pads. I'm ready now... BRING.....IT.....ON... :-) " - Dave N 19:04:30 10/31/07
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