Re: American Racing Header SPECIALS!
WOW...that's a big gain. Is tuning a large part of the gain? I ask because I didn't dyno near that high on my car with another brand a few years back, during a dyno day near you. I actually dyno'd less than Kurts 2000 ACR with stock exhaust. I did show more torque in the middle but dropped about 4 RWHP by the end. I do throw the rear o2 sensor code every few days upon cold start even with fresh cats. Again, that's with another brand of headers.
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