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08-14-2013, 11:22 AM | #23 |
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Yes you really need the cel for other problems that arise. I know already mine will be louder because the rpi gtm is not as humble as the Akra. Alan's does sound good though. That bang in 3rd gear was crazy badazz. Ok it's decided then. Catted for me.
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08-14-2013, 11:47 AM | #25 |
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Brian, you should go with catted as there is no CEL fix at the moment. Catless is very loud under load especially with a straight pipe like you and Dave have. Catted might be the perfect combo for the RPi GTM in term of noise level for you. Don't forget the GTM is louder than the Akrapovic. I am happy with my setup due to the fact the Akrapovic has a resonator to filter out the drone, which would have driven me nuts. The CEL is annoying but I'm going to try out the Akrapovic delete R today. The Delete-R device plugs into the factory OBD2 port and keeps the check engine light from coming on for the catalyst inefficiency code. Hopefully this work until a tune comes out. Good luck Brian.
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08-17-2013, 07:53 AM | #27 |
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The guys with the DP's..... do you hear your waste gates at idle rattling under the car?
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08-17-2013, 10:35 AM | #29 |
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Not at idle, I do hear the waste gate, but only when I let off the gas pedal during low speed. Mine is more of a whoosh follow by a mettalic tinny noise.
Last edited by bclk55; 08-17-2013 at 02:35 PM.. |
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08-18-2013, 07:39 PM | #31 |
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Floor it and look the other way
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08-18-2013, 11:01 PM | #32 | |
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08-18-2013, 11:04 PM | #33 | |
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08-19-2013, 01:02 AM | #34 |
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08-19-2013, 01:09 AM | #35 |
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08-19-2013, 01:11 AM | #36 |
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08-19-2013, 01:17 AM | #37 |
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08-19-2013, 10:36 AM | #38 | |
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08-19-2013, 11:09 AM | #40 |
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Allan is correct guys, the microcats are not working on the US M5s. The catted one has not thrown the CEL.
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08-19-2013, 12:08 PM | #41 |
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What about o2 simulators?
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08-19-2013, 12:44 PM | #42 |
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From what I have seen its a hit or miss with them, it does seem to work on the older cars but not quite as great on the newer vehicles.
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08-19-2013, 01:37 PM | #43 |
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My buddy is making a set with built in microcats. I should be installing all by next weekend. I guess I will test it out.
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08-20-2013, 09:06 AM | #44 |
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