Following on from the Surrey results last year, James recently came to Bristol for a Stage 1 remap having previously discussed what he wanted from the car and the benefits this would bring. The Surrey dyno showed the car to be running ok, albeit a little low on power given the chip upgrade. Anyway, first up was to run it up on our dyno to get a good baseline before any mapping took place.
As presented (Standard + G-Tec 1 chip)231bhp @ 5961rpm
234lbs/ft @ 4740rpm
191 wheel power @ 5682rpm
We did two runs the first giving slightly less power at 227bhp & 231lbs/ft. What is interesting here is that the power and torque are almost identical to the Surrey Dyno Dynamics, with peak power being made at the same 5900rpm. The main difference was the air fuel ratio, which proved to be a lot richer going into the mid-10s. This was corroborated by my own lambda against the dyno lambda, so suggests that the SRR lambda was perhaps a little off that day.
So to the mapping, well for a totally standard car, the biggest gains are always made within the mid-range as this is where the turbo and engine are most efficient. Although not quite as extreme, we will also see gains off-boost and with part throttle thus making the car more drivable and responsive. For James’s car, given that we could not increase boost beyond what he was already running, it is very satisfying to be able bring everything else into perfect harmony in order to effect a significant increase in performance and enjoyment. The results were excellent in this regard, showing immediately in the first drive on the road.
FC Stage 1247bhp @ 5608rpm
260lbs/ft @ 4358rpm
216 wheel power @ 5233rpm
Great to see a well looked after Plus that James has owned from new
I didn't mention this on the day (had to double check), but James's Coupe was number 500 that has received an FC Performance upgrade