Have a word with Steve at Moto Rapido he should be able to sort it, not sure if you can use your existing power commander or not, might be possible if it uses the same connections and loaded with a R map.
As for the exhaust I thought the 748Rs all had 50mm full systems :puzzled:

Ok, you need a ultimap chip, the 2002 748 R has a 50mm system.
I have a ultimap chip in my 2002 748 R and it runs sweet :smug:

I've always found them very helpful.

I bought a JHP Chip and fitted it but it didnt appear to help things so, the bike has gone back to P&H they have been working on it and rang me this evening to tell me that the front cylinder is running to rich but the back cylinder is fine, they have tried balancing the carbs and that hasn't worked. There going to check the valve clearances tomorrow as they think it might be that. I'm getting a bit worried that there might be something quite majorly wrong , would valves clearances really have this effect...?

A 748 doesn't have carbs.

And it's often quite normal for these bikes to run slightly rich on one pot or the other. There are ways and means around this - others here with better knowledge than I can explain but, I believe and FIM chip allows control over mixture on both pots.

This is running so rich that it doesn't fire properly on that cylinder so when you start it, it's only firing on one cylinder..! and when you try and pull away it spluters and all sorts and there is no power.

Are P&H Ducati dealers?

I don't have the knowledge to suggest a fix for this but, if they are Ducati dealers then they should have sufficient resources to solve it.

P&H called today to sy they have found the problem. The valve clearances on the front cylinder were way to tight which has ment that the rockers and cams are damaged well very worn but they also found one of the valves is broken as well. so new valve, rockers x2 and two new cams coming up, thank god it is under waranty.

i supose it was bret that upset you shame really the workshop guys do know their stuff

Yes it was Bret basiclly told me my bike was a pile of sh*t, yet P&H thought it was in good nick so much they have sold it within 3 weeks. I've bought parts from them and the guy on parts and the auz guy seem really nice. A few years ago I had a 750ss which i went to protwins to trade in for a 748 anyway we agreed a px price and paid a deposit, the day I was due to pick the 748 up they rang and said that ducati had lowered the price of my 750ss new so they would have to lower the px price of my by 700 quid. I had already taken out a loan for balance and sorted the insurance and they wouldn't keep to original price. I'm sure people have had good dealings with them but this has been to put me off going there again.