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Iv been trying to do research on a chip for my 04 325xi and all iv been seeing were chips that just kill the rev limiter and top end non that really give n e horse power can n e one help me out and let me know witch ones r good and worth buying thank

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Iv been trying to do research on a chip for my 04 325xi and all iv been seeing were chips that just kill the rev limiter and top end non that really give n e horse power can n e one help me out and let me know witch ones r good and worth buying thank

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Witch!?

Where!?
 

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Iv been trying to do research on a chip for my 04 325xi and all iv been seeing were chips that just kill the rev limiter and top end non that really give n e horse power can n e one help me out and let me know witch ones r good and worth buying thank

Sent from my DROIDX using Bimmer App
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Buy a BMW performance intake to start http://www.trademotion.com/partloca...fo&PartID=755875&siteid=214672&catalogid=4462 for $315. A members dyno test on a ZHP showed a gain on 6.5HP (BMW claim +3 HP but they underpromise and underdeliver :thumbup:).
The adaptive ECU will adjust the engine map automatically for the increased airflow. Chips like Shark give a small bump by assuming you use premium gas always, smoothing ECU maps and optimizing CAI, headers and exhaust. Some help manage CELs.
 
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