The 3.8L twin-turbo V8 M838 engine in the McLaren 570s is a great engine, providing excellent throttle response and top end power, which isn’t something many turbocharged engines can do. Unfortunately, the turbochargers that are used are a touch on the small side and lose efficiency above 6,500 RPM where the 570S starts to lose power until redline. Unfortunately, this isn’t something that can be tuned out of the car, as turbochargers have a limited efficiency range. Weistec recognizes this problem, and they have a developed a solution that uses the stock turbos with a little bit of modification. This upgrade, known as the W.3 turbo upgrade, works best when paired with other modifications, but is an excellent addition to any 570s.
With this upgrade, Weistec fully disassembles the stock turbochargers and machines the compressor housings and center cartridges to accept the larger Weistec 5-axis CNC machined impeller wheel. This Weistec impeller wheel uses a larger design, allowing it to flow more air. Despite being significantly larger than the stock wheel, this wheel weighs the same thanks to its lightweight construction. The result is more flow which results in more power, but without any sacrifice in throttle response and spool time. Weistec W.3 turbos add top end power without sacrificing low-end torque or throttle response, to put it simply.
Depending on the modifications, tune, and fuel used, you can see as much as a 200whp gain with these turbos; This will take your McLaren from 485whp up to 668whp. As you can imagine, adding 200+ horsepower to already ridiculously fast car is incredibly fun and incredibly fast.
If you have any questions about Weistec W.3 turbos for McLaren 570S or would like to purchase any parts for your McLaren, please do not hesitate to contact us. We can be reached by phone at 1.480.966.3040 or via email at [email protected].
