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Mercedes-McLaren SLR 722 tuned by RENNtech
Source: RENNtech   
Mercedes-McLaren SLR 722 tuned by RENNtechIf you think that the bright and shiny Mercedes-McLaren SLR 722 with its 5.5-liter V8 engine just doesn't have enough firepower to put you in the stratosphere, then RENNtech has a truly good news for you. For some additional money, they will offer you a serious engine upgrade that will add 77 more horses to the stable under the bonnet of your a little bit overweight supercar.

Mercedes-McLaren SLR 722 tuned by RENNtech (side)Introduced last July, the Mercedes-McLaren SLR 722 is a tribute to Stirling Moss' and his co-driver Denis Jenkinson's victory at the Mille Miglia race in 1955, won by a Mercedes-Benz 300 SLR with starting number "722". So, you see, the vehicle's index doesn't have anything to do with its engine's maximum power output, although the engine is capable to deliver up to 650 horsepower.

German RENNtech has upgraded the original engine with new intercoolers and new intercooler pump, which is twice more productive than the stock unit. Because intake temperature is now 10C lower than before, boost pressure skyrockets and here you are -- your Mercedes-McLaren SLR 722 features real 722 hp. At least, Motor Authority claims so.
 
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