That is a solid difference right there especially considering the forced induction run was in warmer weather. @charliekay's full impressions below:
Last night I finally got around to running the car, after a couple of busy months.
Very impressed with the times, and gain overs the N/A setup.
The car has the following:
- 2008 C63 with Original Tranny
- Weistec Stage II Supercharger w/ Oil/Air Seperator
- OEM multispoke 19s on front, w/ OEM Conti tyres
- OEM 5-spoke 18s on rear, w/ MT ET Streets 265/40
- Full interior with no weight reduction
- Pump Fuel - 98RON (equivalent to 93R+M/2) - I only ever use BP Ultimate 98
- iPE Full Valvetronic Exhaust
N/A the fastest the car ran was 11.803, this was with the iPE Exhaust and OE Tuning Stage II tune. Unfortunately I cannot find the timeslip for the 11.80 run, but I have one for an 11.83 run I did, which was 1.849 60ft, and trap speed was 119mph
For comparison reasons, I used the same car, same wheels (including rubber), same fuel, same track (Sydney Dragway), same exhaust, all with full weight.
Obviously it was a different day so different temp, looking at the different time slips, looks like there was a 10 degree Celsius temperature difference between the runs, last night being hotter. Not sure how much time this equates to, but just trying to be 100% clear with the results.
So last night after the Stage II was put on, I ran 11,205, 11.181, 11.184, 11.184 again and the last run was the fastest being 11.162.
This mean the Weistec charger took a minimum of 6.5/10ths off the N/A time. The reason I say minimum is traction is a problem with that much power, you can feel the car hesitates and jumps a little when it hits second. I think some 16s or 17s with better rubber would be worth 1-2/10ths just in solving the jump into second, not to mention the gains in weight reduction and 60ft gains.
Anyways here is the time slip.