Hey guys, I have an 09 250 hp challenger and I wanted to know what would be the hp gain if I added a dual exhaust, air filter, air intake, and a diablo predator?
I have long tube headers, dual exhaust, CAI and custom tune and I picked up 29 rwhp. 175 rwhp with just predator tuner & cai. LT headers, dual exhaust & custom tune got 204 rwhp.
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