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I was reading on 18turbo.com that the ECS Race valve or the n75 H valve was actually giving 1-3 more PSI boost which in turn was pumping out 10 more HP. They have dyno's of it too. That why I was thinking about replacing mine.
QuA
2008 BMW 135i | M Package | JB3 | DCI | BMW Performance Exhaust
Yeah I thought about that too. Some people have gotten overboost though, I still haven't decided if thats worthwhile. I guess if you got a gauge you can check to see if theres room for another few psi and still be within the realm of sanity.
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