Hi, some came in last December but were immediately sent out to customers so we didn't get a chance to do any testing.
There is quite a big waiting list for them but the next one on the list is being fitted and tested here so I'll let you know the results. We haven't seen any plenum spacer kits that actually work yet, so it'll be quite interesting.
What do you mean by work? As in peak power, area under the curve.
Are you saying that the plenum kits you've tested have made a loss?
Which ones have you tested?
Im sure the Cosworth will make more than the spacers it looks like a decent bit of kit, but just want to know the facts.