Talk Morgan Forums Morgan Sports Cars Maintenance & Servicing Plus 4 GDI Aero Racing Manifold & Exhaust Upgrade

So..........

The rear mudflap mod was a simple cut......

For the front I had to extend the inner bracket, and then strip the mudflap, cut for clearance and add an aluminium curved panel. I used my redundant engine heat shield for this.







Things are quite tight around the back and here you can also see my closure plate.



I also made some new exhaust skid plates. Each time I do this they get bigger, but it does keep the road crud off the mountings.





This is the engine bay before I fitted the new heat shield............



And finally, when everything was done..........






In the garage, the engine fired up first time and sounded much less throttled. It revved freely, and the noise is little different to the standard set up.

Today after a fifteen mile shakedown........no knocks or rattles, a nice throaty roar under acceleration. Smooth idle. Much freer revving through the gears, and most noticeably, more bottom end torque, easily pulling away in higher gears than before. And it feels a bit quicker. Whatever ....it's a chalk and cheese transformation.

So far no engine light! The new cat doesn't come with a jacket, so I've wrapped it in a weave blanket, and put the old cat cover over the top. If I get any problems with the cat not running hot enough, then I may have to rethink the manifold wrap. My heat shield prevents the hot air rising and enveloping the cold air intake, and should also keep the manifold hotter. The mudflap also shields the cat from air flowing under the Morgan. Interestingly the offside wing now gets very hot. I added a blanket to the cat on my 4/4 Anniversary because the wing was getting super hot, but even with the double layered insulation.......that wing is hot!

So, my next step is the trip to the factory and the ECU flash. It will be a week or so, and I'd like a bit more road time to get to know the characteristics............