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    • How much power/torque can a boost leak cost you? Weistec turbo upgraded W212 E63 S M157 gets back 20 awhp & 43 awtq

      Maintaining and accurately diagnosing modern turbocharged cars is very important and also why quality shops are hard to come by. Solo Motorsports took in this W212 Mercedes E63 AMG that has a Weistec M157 turbo upgrade as the owner complained about inconsistent power.


      Well, Solo Motorsports was able to identify a number of small boost leaks and repair the car.

      What is a boost leak?

      A boost leak means that somewhere in the turbo or intake, there is an area where the air (boost) is escaping. Typically a boost leak is caused by a loose or bad seal, cracked housing, bad or old hoses, clamps. When a boost leak is present, the turbo will be able to generate boost, but it may not be able to hold it at a constant level and pressure will drop off proportionally to the size of the leak.
      The severity of leaks can range but power and torque were certainly down here:


      With the issue addressed the car is over 700 horsepower at four wheels on a Mustang dyno and making a mountain of torque at 863 lb-ft to the wheels.

      It is always a good idea to find a good shop that can take a look at your car as dealers often will not go into certain things in high detail due to the high volume of cars they service.


      This article was originally published in forum thread: How much power/torque can a boost leak cost you? Weistec turbo upgraded W212 E63 S M157 gets back 20 awhp & 43 awtq started by Sticky View original post
      Comments 1 Comment
      1. Batman's Avatar
        Batman -
        I'm curious to know how long the owner of that car has been running the Weistec parts. Did he buy the parts brand new? I was under the impression that Weistec performance parts were durable and of high quality.