2023 CT4-V Blackwing 591 WHP

Matt came in with his 2023 CT4-V Blackwing to have our wildly popular Purple Belt Performance Package installed.  He ended up making 591 peak whp with E53 fuel in the tank, and should be well into the 600 whp range when he increases his alcohol content to somewhere in the E60 to E70 range.  That’s the sweet spot for these cars.  Below E60 we need to pull back boost and/or ignition timing.  And above E70 we can run into fuel system capacity issues.