Quote:
Originally Posted by e85m4
I like the product but price tag is on the very high side !! Yes 812whp is a lot but its at 32psi... any aftermarket turbos at that boost level will produce power around that level.. but the stock engine wont last long either .. people are making 600whp on stock turbos at 22.5psi so 10psi more = anywhere between 100 and 200whp more
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Currently there are no aftermarket twin turbo systems for the S55 platform that produce 812whp at 32psi other than the KRAS55Bi. All current aftermarket offerings are hybrid turbos that produce more than 100whp less at the same boost level. Also, the back pressure levels on stock manifold hybrid turbos are extremely high which is one of the contributing factors for increased risk of connecting rod failure at power levels above 700whp. While it is true that many people are producing 600whp on stock turbos, peak horsepower does not tell the whole story. Stock turbos may produce that power for a brief moment as they're operating outside the confines of their compressor map and well above 22.5psi. Whereas, the KRAS55Bi continues to make power all the way to the rev limiter. The true difference in power lies in the powerband as shown in the stock turbo overlay with E85 vs. the KRAS55Bi. By 7k rpm the KRAS55Bi produces 327whp more than the stock turbo.
This particular beta test vehicle has over 30K miles on it of which 20K+ miles have been with the KRAS55Bi's installed daily driven at 750whp-775whp without fail. We understand there is a lot of information in the press release which can sometimes be overwhelming and overlooked. Here again is a quick excerpt regarding engine reliability at this power levels with the KRAS55Bi. We hope this helps clarify some things.
"The introduction of the KRAS55Bi proves that early connecting rod failure on stock engines is more a result of high exhaust back pressure along with extreme torque demands rather than a pre-mature mechanical limit of the rotating assembly based on data from several high mileage 750+whp beta test vehicles . The shape of the dyno curves listed above are a visual representation of the KRATOS Engineering Team’s success at disproving this fact."