Hey RNS-11Z...
MBWorld Fanatic!
Joined: Jan 2009
Posts: 1,175
Likes: 101
From: Australia
09 C63
Ok
i dont have much time but i will try write as much as i can.
When i first fitted the exhaust system, we had issues with bad fuel. Once we got that sorted, we made a best of 317rwkw. This was down some 5-8rwkw then my best. I decided to change the collectors, i extended the extractors and used a different cone piece. The headers are 1 3/4in. The exhaust its self is 2.9in (just under 3). When i re dynod with the new collectors i made a best of 305rwkw. In the end i was down a good 20rwkw on power. Torque was similar. How ever, my best time with 325rwkw was 12.2 @ 116.5 mph, with less power i went 12.0 @ 121mph. It was humid last night at the track, i only had 1 perfect run. I played around with driving it in S, Manual and S1 modes. The best is do not stall it up, put it into S1 and let it change it self. I did my best time in that mode. my 60ft could have been better, my diff would spin 1 wheel off the mark sometimes.
Over all i am very happy with the outcome, considering i have the smaller header package compared to MHP or MBH(?), i have ran similar mph to MTHIS, be it at a much slower time. With better track conditions and better driving i dont see a 11sec pass an issue. My tuner will be retuning my car in a few weeks, i hope to go out then again but i know the weather here in QLD will be even more humid so i may not see the results i want until after summer.
h.
i dont have much time but i will try write as much as i can.
When i first fitted the exhaust system, we had issues with bad fuel. Once we got that sorted, we made a best of 317rwkw. This was down some 5-8rwkw then my best. I decided to change the collectors, i extended the extractors and used a different cone piece. The headers are 1 3/4in. The exhaust its self is 2.9in (just under 3). When i re dynod with the new collectors i made a best of 305rwkw. In the end i was down a good 20rwkw on power. Torque was similar. How ever, my best time with 325rwkw was 12.2 @ 116.5 mph, with less power i went 12.0 @ 121mph. It was humid last night at the track, i only had 1 perfect run. I played around with driving it in S, Manual and S1 modes. The best is do not stall it up, put it into S1 and let it change it self. I did my best time in that mode. my 60ft could have been better, my diff would spin 1 wheel off the mark sometimes.
Over all i am very happy with the outcome, considering i have the smaller header package compared to MHP or MBH(?), i have ran similar mph to MTHIS, be it at a much slower time. With better track conditions and better driving i dont see a 11sec pass an issue. My tuner will be retuning my car in a few weeks, i hope to go out then again but i know the weather here in QLD will be even more humid so i may not see the results i want until after summer.
h.
