Quote:
Originally Posted by spdbydesignchris
Surprising, we see 400whp out of our 400X @ 14-15 PSI all day long.
The 500X makes 500whp @ around 20 PSI.
I would have expected more from the 620Z, hum....
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This is on a 9:1 Compression motor, therefore the comparison isn't quite there, on a stock compression motor and e85 it would be around the same.