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The reservoir fits perfectly under the engine cover without any problems.
No, you don't have to drill or make a hole. You just remove the engine cover fill the reservoir up and that's it. When you install the reservoir you may have to check and refill couple of time until the whole system is filled with fluid.
I didn't drain the whole system, no need to do that.
For the installation of this product at least two people are needed (for taking the bumper off)
use a lift while installation.
The front bumper has to be taken off to gain access to the hoses. take off the turbo coolers to gain more working space. Everything else must be done according to the diagrams that I've posted before. Collect all escaping coolant. Before assembly check for leaks. then install the front bumper.
I finally did the upgrade according to the diagrams that I posted above. On the top of splitting the system I also upgraded the inter-cooler pump. I managed to find out from the other threats that Renntech is using Pierburg CWA100.2 pump, therefore I got the pump for much lower price.
Alternatively you can also order the pump from your local MB dealer with the following part number: Mercedes SLS cooling pump Part number: A 000 500 04 86 which costs around 400USD.
Connection of wires: Zero: Ground, 3 and four: Positive pole (+)
nice info! Any advantages of just upgrading the pump? Is that what renntech does, or do they add an extra res?
First, I divorced the system and got better outcome since I live in Tbilisi, Georgia where temperature reaches 45 Degrees. For daily driver it's a very good solution and necessary if you have a modified car.
If you modify your ECU and add large turbochargers. You must add heat exchanger. I got mine from Weistec... Intake temperatures are low and stable even after hardcore racing.
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