I have been watching the forum for a number of months and now I have started my own project I thought I would share some progress.

I have an 18 month SL62 R231 which I use for commuting (80 miles a day) and have done 6 track days in the last 12 months.

I dyno'd my car just after I bought it on DD rolling road and it produced 574 BHP which I was more than happy with.

Now to the task in hand.

Before I embarked on any mods I changed the filters to some K&N's and did dyno run on a different dd rolling road (12k miles of running in). The results came back with 581bhp.

Next up was a Rebellion piggy back box to avoid ecu drilling. The box was installed in 30mins. And then I had a 10 miles drive to the rolling road which allowed for adaption. The acceleration felt significantly stronger and the engine note more aggressive with some bigger bangs and pops. Two runs on the dyno (dd rolling road) produced a reading of 628bhp & 840 nm (I will attach the shoot out when I am on the pc as the ipad wont let me!). I have sinced tracked the car and its a different beast and clocked 3 mph faster than a GTR on the straight. db at 4k revs went up from 92 to 99 on the sound check.

My next mod is being installed hopefully Friday which will be RADO down pipes with sports cats. The install is being done by Eurocharged London and should significantly improve the sound and add some BHP but I have no idea how much. I will follow the install with a dyno run.

Future plans. TCU plug and play from Rebellion, Renntech lowering module and some new alloys to be decided.

I will keep you posted.