Well,I went all the way to Rising Sun Performance (249miles each way) for the second time last weekend.First time I went to them a month ago I was let down by the car as the standard ECU in the car was found to have a Buddyclub chip in it and it had damaged the ECU so that it could not be read or mapped!
Anyway this time I had a new ECU with me and the mapping started straight away...until they started full power runs and discovered it was running very poorly and the graphs were all over the place.They spent hours lookin through everything and found the trouble to be a faulty CAS unit(cam angle sensor)
On examination it had been chewed up by the pin that drives it from the exhaust cam and the pin had actually snapped off the cam!!
The reason this had happened is that a gasket with spacers in it had been missed out when the engine had been assembled! This gasket should sit between the cambelt cover and the cas unit.Without it the cas was being forced towards the cam too much...
So they fitted a new exhaust cam and found yet another problem...the bottom pulley had no woodruff key!
Anyway after all this had been fixed and the engine was all back together they said it could be mapped, but not until the next day.So another night in a hotel...
The mapping was finished the next day and I have to say it drives much smoother and pulls much better...but there is another problem... the walbro(if it is a walbro) in the tank will not supply enough fuel for more than 1.2bar without making it run lean over 6000revs....So I am gonna need to pop a relay near the pump and uprate the power supply to the pump or change the pump.
Anyway it was not all bad news...it still made 350bhp at 0.7bar..........410bhp at 1bar...........450bhp at1.2bar but not taken over 6k revs.
So it will make a bit more, but I need to sort the pump to run more boost.
I have also fitted a very free flowing exhaust which gives a much deeper and slghtly louder note...
Total expenditure for the 2 days was £1,210...nice