Thunderstorm M3 with up to 500hp by ATT

Autotechnik + Tuning or ATT has given the M3 Convertible a bit more fire under its belly. The car is already powerful with its standard 4.0-litre V8 pushing out 309kW (420hp). But in the tuning world enough is never enough.
By giving it a compressor system, optimising engine software and installing a new exhaust system with optimised dynamic pressure, ATT was able to extract an extra 59kW (80hp) to make it an even 500hp (368kW). For extra enjoyment the tailpipes were apparently tuned to give out two different sounds. ATT will do the engine job for €11,749 including installation.
Wheels fitted are 8,5x20 and 10x20 alloys while the matching tyres are Michelin Pilot Sport 2s measuring 245/30 ZR 20 and 285/25 ZR 20 front and rear respectively. Although generally praised as a very competent handler, ATT felt their M3 needed an extra dose of road-holding ability. So they included a KW coilover suspension system in the kit for about €2,000.
The interior can be ordered with a cabin largely made of carbon fibre or Swarovski crystals. ATT calls it the Thunderstorm M3 and with a name like that we cannot wait to see the performance figures.

Google翻譯
Autotechnik +調整或先進交通運輸，給予 M3敞篷一點在其肚子火。這輛車已經強大了其標準的4.0升V8擠出 309kW（420hp）。但在調整世界足夠的永遠是不夠的。

通過給它一個壓縮機系統，優化發動機的軟件和安裝新的排氣系統優化的動態壓力，先進交通運輸能夠提取一個額外的59kW（80HP決定），使之更加500馬力（368kW）。為了提供額外的享受排氣管顯然調整，使兩種不同的聲音。 ATT將工作做發動機為€11,749，其中包括安裝。

車輪是8,5 X20和10x20合金，而匹配的輪胎是米其林Pilot Sport 2秒測量三十分之二百四十五鋯 2025分之285鋯 20前部和後部分別。雖然普遍稱讚非常能幹的處理程序，先進交通運輸認為他們的貨幣供應 M3的需要額外的劑量道路控股能力。因此，他們包括西線懸架避震系統系統在包約€2,000。

內飾可以訂購的客艙主要由碳纖維或施華洛世奇水晶。先進交通運輸調用它的雷雨M3和這樣的名稱，我們不能等待一下，看看表現數據。
資料來源: http://www.worldcarfans.com/109113023290/thunderstorm-m3-with-up-to-500hp-presented-by-att