Originally Posted by biotic
What is the maximum amount of boost that a 2003 Civic EX internals can take and still be reliable? Anyone know of anyone that has boosted an EX civic 2001-2005? What are the performance gains?
probably 10psi safely properly tuned with no qualms about reliability, 2g84u was boosting 11psi on his sohc and made like 175-180 to the wheel.