sorry for late reply been flat out lately. yes still around. just keeping a low profile atm. I read about the things that are going on here but dont post much anymore.
I have 2 rs5`s full carbon fibre chasis, and a harm sx3 with the lay over front shocks and upright rears. both with modded 23cc motors imported from the usa.
im into rc helicopters,race 1/4 scale gas boats rc sailboats and 1/5th scale onroad cars. my other hobby/business is sharpening knives, swords, chisels, ect im not talking sharp but razor sharp superfine sharpening.
sounds like the combo switch. it cost me 485 bucks to replace it at ford. I know it was a rip off but I dont have time to fix it or to fark around with the car off the road
with the split open air screamer apart from being illegal it will make it slightly easier for the wastegate to control boost. the case of exhaust flow and wastegate performance is that to much flow in the exhaust allows the exhaust gas to follow the path of least resistance. so if the exhaust flow path is of lesser resistance than the path of the wastegate, exhaust gasses will flow around the turbine instead of bypassing the turbine and exiting out the wastegate making the turbo spike at an uncontrolable rate over boosting. this is why people who have large exhaust systems port out the wastegate and put on a larger flapper this allows more gasses to be vented through the wastegate instead of going around the turbine. so if you in theory allow the waste gate to flow to atmo it will have less resistance than the exhaust system maintaining easy control of boost but. when you hard tune a 4 litre engine with 18 or 20 psi there is a hell of a lot more exshaust flow so turbo mods such as a ported wastegate are a mandatory addition.