Hi 👋 I’m new to forum

Here’s my Rotrex Supercharger Scion FRS
On E85 making 354whp 7400rpm at 13.7 psi . Using the C30-94 Rotrex Supercharger.my best 1/4 mile run is a 12.7 at 112-113. But I never launched hard highest is 4000rpm and my power doesn’t really start until 5500-6000. Didn’t want to brake an axle on my street car and it’s ET drags so I just tuned it to run 1.99-2.0 60ft on M&h race master drag radials. But after 200 passes and 3 1/2 years of making double factory power on a stock flat 4cyl motor I snapped a rod! It was Last Wednesday night drags off the year super cold out! 39degress at10pm to be exact and the car was making more power than normal with cold dense air and right after 3rd gear shift I hit the gas and it lade over no power I lifted and tons of smoke came out the exhaust and then bang hole in the block . So right now I’m working on getting a FA20 bored and stroked to 2.2 With forged internals and upgraded oiling system!



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Blue line is High boost pulley On E85
Green line is 3psi less/low boost pulley E85
Yellow is factory before supercharger

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That's awesome. I'll make a drag racing sub forum once we get enough working units out there and people are drag racing with them.
 
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