Have had no sleep and have had some alcohol, so forgive me if I you think I am talking a load of sh.t I do find this subject interesting and my understanding is that on a two stroke the exhaust pipe is critical, there is usually a box at the end, call it an expansion box, the exhaust gas expands within this box which forces the exhaust back towards the cylinder, allowing the unburnt fuel back into the cylinder.
You need to leave either the Cat or one exhaust box.
Long time ago when the site had rolling road sessions one guy had a straight
through pipe all the way and it was down on power compared to everything
else, even non modded cars.
A properly designed exhaust can produce more power than a straight through
system. Sounds mad but its been tried and tested.
Am I right in thinking that the turbo in the Diesel engine does not require back pressure and that the boxes, silencers restrict the flow. I do realise that the cat restricts the flow, but unfortunately we need something to check the co output for mot.
Purple, it’s 6.30am and I wanted to work on the car today. With the forecasted heat and lack of sleep I might have to reconsider.
I need to know more about exhausts.