I have a matched pair, setup for a tunnelram. Worked great and made power on the dyno,would NOT work on the car. They will be going back.
Replaced them with a pair of Prosystem XE Dominators and the car works as it should.
I'm not bashing Dambest, just saying that the jury is still out.I will have more info when they are reworked and sent back to me from Dambest.
They are very expensive!