" Terry did it already with 20D. My car has always made this noise and I never thought it was the DC mapping itself. Makes sense though, depending on WG position, WGDC and exhaust pulsations, you're getting the perfect storm for rattle. Hindsight is always 20/20 lol. "

" Doh, forgot you had VTT Stg2s. I'll give er a try this weekend anyway. "

" Actually, I think the WGDC table is the base table and DC Corrections is the 5% authority to correct from the base table. I'd be interested in seeing a log with Boost DC Correction logged though. Otherwise shoot me the map and I'll take a log this weekend. "

" So, you added DC to the WGDC table down low, but won't that cause severe negative DC corrections where you added it? I thought the procede only has 5% "on the fly" authority for DC correction.

I had that midrange rattle for so long, I just propped the WGs open more, at the expense of lag, for less rattle. "