PERFORMANCE FOR THE JAGUAR V12

Looking into V12 Plus Torque Manifold Our ENHANCED ECU (Electronic Control Unit) makes the car much nicer to drive whilst our SUPER ENHANCED ECU at uses more advanced techniques to provide the sharp response normally associated with multiple twin choke carburetters. Our LARGE THROTTLE CONVERSION provides an extra 25 b.h.p. comprising large bore throttles, supplementary cool air intakes, high efficiency filters and modified ECU. For those who want 6 litre performance from a 5.3 then our PLUS TORQUE CONVERSION is available comprising the Large Throttle Conversion added to modified inlet manifolds with internal ram stacks (photo right) to optimise resonance effects and boost mid-range torque.

SE (SUPER ENHANCED) ECU - all models 1981 on.275.00
LARGE THROTTLE KIT - with remapped or modified ECU - 1976 on (inc. gaskets)425.00
SE LARGE THROTTLE KIT - items 1 & 2, option for 1981 on600.00
HIGH TORQUE INLET MANIFOLDS (includes port gaskets and injector seals)700.00
PLUS TORQUE KIT - all injected V12s (Items 1,2,4. inc. all gaskets and seals)1100.00
BADGED MANIFOLD OPTION on items 4 or 5.80.00
SILENCER SUBSTITUTE PIPES per pair (Stainless)98.00
LARGE BORE STAINLESS EXHAUST SYSTEM750.00
MULTIMAP ADJUSTABLE ECU 1980-91 applications (Lucas 16CU)395.00
V12 E TYPE EFI CONVERSION - in co-operation with Southern ClassicsP.O.A.

V12 UPGRADE OPTIONS IN STAGES

SE ECU to SE LARGE THROTTLE KIT (Item 2 added to 1)375.00
LARGE THROTTLE KIT to PLUS TORQUE KIT (Items 1,4 added to 2)800.00
SE LARGE THROTTLE KIT to PLUS TORQUE KIT (Item 4 added to 3)600.00

How do our V12 conversions perform?

Independent tests by Graham Bradshaw of "Jaguar World" magazine produced the
following in-gear acceleration times in D2 gear from his 5.3 XJS converted in stages:-

STAGESeconds:
40-60 m.p.h.
Seconds:
60-80 m.p.h.
Standard6.76.9
Super Enhanced ECU5.05.76
+ Large Throttle kit4.55.45
Full Plus Torque kit4.14.94

He also reported that with the Plus Torque kit overall fuel economy was improved!!!