XJS Exhaust Systems
Low loss catalysts available for standard pattern V12 systems but not for TTs.
To understand benefits of TT systems see ‘TT Systems Explained’.
Lambda sensor mounting bosses can be added if required.
All silencers are straight-through unrestrictive type.
XJS 5.3 V12 – 1975-1991.
Silencer Substitute Pipes – replace restrictive first silencers.
Straight-through front silencers – quieter option.
Standard system – complete.
Large Bore System – complete.
TT Extractor Torque Booster – basic – front section only.
TT Extractor Torque Booster – complete – std rear section.
TT Extractor Torque Booster – complete – large bore rear section.
TT Extractor Race Version – basic (shorter pipe lengths).
Twin Tail Rear Silencers – also option with complete systems.
XJS 5.3 (Facelift) & 6.0 V12 1992-1995.
Silencer Substitute Pipes with Intermediate Pipes. Replaces standard one piece sections.
Standard system – complete.
Large Bore System – complete (Std for 6.0).
TT Extractor Torque Booster – basic – front section only.
TT Extractor Torque Booster – complete – std rear section.
TT Extractor Torque Booster – complete – large bore rear section.
Twin Tail Rear Silencers – option for 6.0.
TT systems for these models are generally similar to those for the earlier 5.3 cars but with appropriate tail pipe arrangements.
Note: All V12 TT systems require slight changes to the ECU fuel mapping to match the increased mass flow through the engine. This is included in the price. Other systems with air mass flow meters deal with this automatically.
XJS 6 Cylinder Engine Cars.
Low loss downpipe catalysts available for all 6 cylinder systems including TTs.
Standard original systems for all 4.0 cars are larger bore than for 3.6.
XJS 3.6 AJ6 1983 – 1990.
Silencer Substitute Pipes – replace restrictive first silencers.
Straight-through front silencers – quieter option.
Standard system – complete.
Large Bore System – complete.
TT Extractor Torque Booster – basic – front section only.
TT Extractor Torque Booster – complete – std rear section.
TT Extractor Torque Booster – complete – large bore rear section.
Twin Tail Rear Silencers – also option with complete systems.
Twin tail rear silencer.
XJS 4.0 AJ6 1991 – 1994.
Silencer Substitute Pipes – to mid 93.
Straight-through silencers – to mid 93.
Standard system (large bore) – complete.
TT Extractor Torque Booster – basic – front section only.
TT Extractor Torque Booster – complete – large bore rear section.
Twin Tail Rear Silencers – also option with complete systems – to mid 93.
XJS 4.0 AJ16 1995 – 1997.
Standard system (large bore) – complete.
TT Extractor Torque Booster – basic – front section only.
TT Extractor Torque Booster – complete – large bore rear section.
Twin Tail Rear Silencers – attractive alternative.
Twin tail rear silencer.
