Neil, youve only got to look at what Stu @ MSD has achieved with the L8 of late to see why its becoming a preffered ECU over the P8.
my car had been on L8 for almost 4 years, did away with the P8 at quite an early stage.
Karl's mapping ability with the L8 makes the ECU a more than worthwhile and competent ECU to use on Martoons engines (and any other builders engines aswell)
For me, the L8 will cover the same requirements that i need as a £2k Autronic or Pectel ECU can cover, without the aditional costs.
it wins hands down