Well it's been a while coming but just like all good things it was worth waiting for.
At last we have INDEPENDENT CONCLUSIVE PROOF that the Spider DOES NOT cause an obstruction that leads to a loss of power, in fact the reverse could be said to be the case.
I'll be posting a link to the report that will soon be posted by the guy responsible for the testing (Insaneron - Ron Haslett) and I leave him to provide the full details but the essential details are as follows;
1) - 545 CI Ford motor (fitted with a blank Spider plate - no drop down tube fitted) made 767 hp
2) - As above with Spider fitted, made 770 hp
3) - As above with 250 hp jets fitted (set very rich at 0.74 Lambda), made 1024 hp
4) - As above made just under a 300 ftlb increase in torque and just fell short of the 1,000 ftlb figure
All the above done on low octane pump fuel and with just 5 degrees retard.