08-17-2016, 03:46 PM | #1 |
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Active auto downpipes
So I pulled the trigger on downpipes from active seems like those guys know what they doing. Can anyone provide feedback on downpipes on f85/6?
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08-17-2016, 05:10 PM | #2 |
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Can not give you any BMW feedback, but on LS platforms at 600ish hp, it's mainly for a killer sound. Catalytic substrate really dampens the V8 thump. You will enjoy that. You will get a cell unless you block or delete it. Power wise, the new cats are pretty good. The sound and quicker turbo spool will fool ya into thinking it is a huge gain. Do a before/after dyno , cats only , and you'll see 15-20rwhp. Nice increase but not massive. Enjoy !
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08-18-2016, 10:05 AM | #3 |
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I just installed a set of downpipes two weeks ago and loving them. Mine are catted high flow.
Turbos spool much faster, acceleration improvement and great change in exhaust tone. I do want to hear some feedback once you get your installed and if you hear the waste gate rattle that was notorious on the m5/m6 forums. I can barely hear it on my car due to the cats I did not throw a CEL which was interesting. I am running race chip piggy back |
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08-18-2016, 11:59 AM | #4 | |
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08-20-2016, 04:11 PM | #7 | |
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08-21-2016, 02:57 AM | #10 |
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I am new here... never had downpipes... so basically if I would install catted downpipes I wont be facing CEL? don't really care about HP, my target is to improve exhaust note.
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08-21-2016, 09:11 AM | #11 | |
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I would just go with Catless and get the O2 spacer or mini cat.
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08-21-2016, 11:35 AM | #12 |
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You mentioned you have Dinan Piggyback installed eventhough on Active website they mention that their software is needed inorder to avoid a CEL. Is it a matter of time? or is Dinan software is able to get around having a CEL?
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08-21-2016, 12:45 PM | #13 | |
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08-21-2016, 12:46 PM | #14 | |
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08-21-2016, 12:59 PM | #15 | |
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Others method of clearing CEL are as follow: - OBD2 dongle or CANBUS connected devices (such as; Burger Tuning / BMS JB4, Akrapovic, and others) are just a timer that will reset clear all fault codes in the ECU. There are a lot of bad sides of this. 1. ECU never in a ready mode, which means the engine is not run optimized or mostly rich. 2. You will never see a CEL if there is in fact other fault going on with the car other than the O2 sensor fault. - O2 Sensor spacer has been known to be able to work. But it is hit and miss. The downside, you may have clearance issue. - Mini Cat, lately it has been very popular. You just need to get the best one in the market, I believe it is bigdaddiesgarage.com. No downside known so far except you may have clearance issue.
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08-21-2016, 02:46 PM | #16 | |
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08-21-2016, 04:14 PM | #17 | ||
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08-29-2016, 07:22 AM | #18 |
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Hey how has your truck reacted to the downpipes? I installed mine (active Auto...same as you) over the weekend and Im getting a bit of a harsh idle upon start-up. My truck also has the Dinan software like yours.
How is yours performing? |
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08-29-2016, 12:46 PM | #20 | |
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08-29-2016, 01:59 PM | #21 |
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Do you think maybe the car needed to adjust and understand the new setup? I do not want to blow the cover on my project but i just installed Akra exhaust and i noticed when i tap on my gas paddle while trying to park in my garage my RPM went up and down and my car stalled as well. I will give it another 100 miles and see if this issue exist or not.
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08-29-2016, 05:05 PM | #22 | |
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