Renntech first to crack the 700 wheel horsepower barrier with the M157 V8 (63 AMG bi-turbo) motor on pump gas - 725 wheel horsepower CLS63 AMG on 93 octane
Wow, it is getting difficult to keep up with all the records and milestones on the M157 5.5 liter (63 AMG bi-turbo) V8 as tuners compete for supremacy Renntech was able to set a new milestone by pushing the motor over 700 wheel horsepower on pump gas. There are other tuners in the 700's but they are currently all on race fuel 100+ octane. Renntech was able to do 725 wheel horsepower on a dynojet in STD correction on standard 93 octane pump fuel.
This was done on a non-Performance Package CLS63 AMG. Renntech's M157 horsepower record previously stood at 691 wheel horsepower also on pump gas
. So what changed? Renntech developed a new airbox which clearly is showing dividends.
The rest of the modifications include the Renntech intercooler upgrade, ugpraded turbos, transmission upgrades, downpipes, filters, and new plugs. Dynojet dyno graph below, congrats to Renntech.