I recently discovered what was described to me as a "knock controller" when I bought the car, is in fact a Unichip piggyback unit. Great bonus I thought. Since it was originally setup with an open induction kit, I decided to have it remapped at Perfect Touch in Hoddesdon to what I have now, a 2.5" Scorpion exhaust and standard airbox with modified air feeds minus acoustic valve. The do extensive tuning with many Skylines in various tunes parked outside their workshop, including their own 700bhp Skyline track car!
Once on the rollers, a diagnostic run revealed that it was apparently over fueling a lot at full throttle and a bit on part throttle. The guy questioned who originally set it up, to which I didn't know, as it was poorly setup with only basic alterations made. The first run made just over 175bhp. An hour or so later, it now dyno'd at 183.3bhp with correct fueling across the rev range. The guy said that most Clio 182 dyno around the low to mid 170's bhp mark so I'm happy with my 183bhp. He also ran it without the airbox, ie, throttle sucking air directly, and it only yielded an extra 1bhp! So the standard airbox, minus the AV is actually pretty good. Result, there isn't a huge difference and doesn't "feel" quicker but is definitely pulls more smoothly through out the rev range. Did a few comparison runs on my usual route and is about half a second quicker to the ton than my previous runs on average.
The torque looks like its all over the place compared to the bhp plot, but this is due to torque plot is on a different scale to the power plot. When drawn on the same scale, the torque is a lot flatter and smoother.
Once on the rollers, a diagnostic run revealed that it was apparently over fueling a lot at full throttle and a bit on part throttle. The guy questioned who originally set it up, to which I didn't know, as it was poorly setup with only basic alterations made. The first run made just over 175bhp. An hour or so later, it now dyno'd at 183.3bhp with correct fueling across the rev range. The guy said that most Clio 182 dyno around the low to mid 170's bhp mark so I'm happy with my 183bhp. He also ran it without the airbox, ie, throttle sucking air directly, and it only yielded an extra 1bhp! So the standard airbox, minus the AV is actually pretty good. Result, there isn't a huge difference and doesn't "feel" quicker but is definitely pulls more smoothly through out the rev range. Did a few comparison runs on my usual route and is about half a second quicker to the ton than my previous runs on average.
The torque looks like its all over the place compared to the bhp plot, but this is due to torque plot is on a different scale to the power plot. When drawn on the same scale, the torque is a lot flatter and smoother.
