Talk Morgan Forums Morgan Sports Cars Classic Morgans (pre-CX) +4 GDI manifold and ceramic cat

Hello, I want to instal the +4 GDI manifold and ceramic cat from Librands in my Morgan. It looks fine and I hope that my engine will run better and cooler because the catalysator is outside. Do somebody installed this one? Please tell me your story. Is something negative? Is it easy to instal? Is the catalysator there to hot for the paint? I hope for many answers, best greeetings from Germany (Niederrhein), Ralf.

With modern engines there usually is a lambda sensor before and after the cat togeter with a map in the engine ECU that looks at the difference in readings. Its quite possible that changing the exhaust will trigger the engine management light

The Ford Duratec GDI engine is built to Euro 6 emissions standards, and changing anything might have consequences , since this is an incredibly set of rules to comply with.

As I understand it , the cat being as close as possible to the exhaust ports is to ensure maximum temperatures to burn off the volatile emissions very quickly.

The Librands kit moves the car outside the engine bay (good for keeping the car cooler, and for looks) but it does mean the cat is functioning at a lower temperature, which may not be beneficial. I don't know of any actual emissions data from either of the 2 suppliers of this type of system for the +4 GDI , so maybe the temperature difference is insignificant in the greater scheme of things , but I would be wary of such modifications.

If my memory serves me correctly I believe we have a member here who fitted a system to his car , but when it came to the MoT he reverted back to standard in order to ensure a pass.