How about Juan's and Mike's EFI'd Carrera's that run 22psi on pump fuel at the normal 7.0:1 C/R?
I suspect that EFI and full bay intercooler conversions bumps up that "limit of 1.0bar" quite substantially
And yes, twin plugging improves the combustion efficiency as well, providing even more safety margin, or allowing even more boost, since flame travel is halved
'89 911 Turbo Cab
Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition
Last edited by WydRyd; 10-31-2006 at 04:57 PM..