Okay, so I bought my Z4 about 4 years ago and since then I've been doing a ton of research on the N54 platform to know which direction I want to go in and how to do everything myself. I've owned a Lexus SC300 with a 2jz swap and 3 240s with SR20s. I know my way around cars, but German engineering is definitely different. Since then, I've installed catless DPs, 7.5" FMIC, index 12 injectors, Eldor coils (recently switched to B58 coils), downpipe w/ BOV, 2" inlets, upgraded PCV valve, catch can, aluminum valve cover, dropped from 19 inch wheels to 18s with more width and performance tires for much better traction (since it comes stock with stupid run-flats), Magnum cold air intake, 2 step colder NGK plugs and an oil cooler.
Point is, everything should be set up for stage 2+ MHD tune. Everything is running smoothly with good logs, but the burble is tilting me. I enjoyed my burbles while it was stock tuned, then I flashed it with medium burbles. No burbles at all. ZERO. I drove around for about 50 miles to see if it would set in and nothing. Tried to figure out wtf is going on and I simply can't. I then flashed it to the highest burble settings possible and I FINALLY got burbles, but ONLY when I downshift into 1st with RPMs reaching 6k.. I don't like downshifting into 1st. I get no burbles downshifting into 2nd. None.
Does anyone have any idea wtf to do or what's going on? Very frustrating. I checked to see if the exhaust flap is open and it is, but it still doesn't do shit. Maybe if the exhaust flap is closed? I don't see that helping at all though.
Thanks for the time reading this and any help/info would be much appreciated!
Point is, everything should be set up for stage 2+ MHD tune. Everything is running smoothly with good logs, but the burble is tilting me. I enjoyed my burbles while it was stock tuned, then I flashed it with medium burbles. No burbles at all. ZERO. I drove around for about 50 miles to see if it would set in and nothing. Tried to figure out wtf is going on and I simply can't. I then flashed it to the highest burble settings possible and I FINALLY got burbles, but ONLY when I downshift into 1st with RPMs reaching 6k.. I don't like downshifting into 1st. I get no burbles downshifting into 2nd. None.
Does anyone have any idea wtf to do or what's going on? Very frustrating. I checked to see if the exhaust flap is open and it is, but it still doesn't do shit. Maybe if the exhaust flap is closed? I don't see that helping at all though.
Thanks for the time reading this and any help/info would be much appreciated!
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