Still playing with my Greddy RS DV, actually tried it reversed........
The flutter happens on throttle release, which means it should be pulling vac and opening the valve.
The flutter must mean the vac is not strong enough to do a quick pull on the diaphragm.
Could be, Greddy chamber is too large? Could be vac line is collapsing or not large enough or maybe too long? Remember it does work well with the OEM.
Any input is appreciated, I'm actually very happy with the OEM in the relo position, just bothers me I can't figure this out.
I may try the small spring only on the hardest setting,, just for fun.



