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2010 2011 BMW 5 Series Forum F10 2014 BMW 550XI Dyno (MONSTER) |
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04-29-2014, 12:30 PM | #23 |
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need another $100 =D
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05-07-2014, 01:31 PM | #24 | |
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Quote:
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05-07-2014, 02:13 PM | #26 |
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dont forget to turn off traction by holding traction button... to hold gears make sure to put your shifter to the left so it gets in to M mode.
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2011 550i RWD 60-130 7.35
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05-07-2014, 04:01 PM | #27 |
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05-30-2014, 09:49 AM | #28 |
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I'm having the EXACT same problem with the power drop as soon as the boost builds. I can even hear a whistling right as it happens. I took a look at the area of item 9 (the tube to turbo gasket and i can see that it's loose. you can wiggle the tube and see the gasket move. There is one bolt holding the tube to the turbo at the tip of the tube but no bolt mounting on the bottom. Seems like a bad design. I tightened the bolt as far as it can go but i can still wiggle the tube. I tried to wedge it in by pushing the tube down and took a drive. No more power drop! So this definitely has an effect. I can live with it for now. I'll need to go to the dealer soon anyway for rear brakes so I;ll have them replace the tube/gasket then.
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05-30-2014, 10:20 AM | #29 |
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^^ When i inspected mine there was on bolt on top and one hidden bolt on the bottom. Both were hard to reach because there was other stuff blocking it. What did you use to get in there to tighten it?
Again that area doesn't see boost but rather only vacuum air since the turbo is sucking in air from the intakes in that location. I can see that causing an issue only because it would be taking in "un-meterred" air and the ecu might not like it if its a significant amount.
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05-30-2014, 10:56 AM | #31 |
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No downpipes. You will have to live with a check engine light if you run Dps until someone comes out with a legit tune that can disable it for the N63TU.
I have a 3" axleback exhaust on mine and I believe the OP's car is still fully stock except for the BMS tune. Alan
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05-30-2014, 01:15 PM | #32 |
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You are correct. All stock with just BMS tune with increases dial
I ran a e60 m5 last night with a tune and from 40-120 I was ahead by about 3 cars and pulling. I had my dial on my Jb increased by "1" with 3 more settings to go. So yea. |
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05-30-2014, 02:50 PM | #33 |
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Drives: 2013 BMW 550i xDrive M-Sport
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I think this is only true if you use a catless DP. If you go catted I've read that there is no CEL. Catted DP's should still decrease turbo lag a good bit over the standard DP.
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2013 BMW 550i xDrive Alpine White [300] | Black Dakota [LCSW] | Anthracite [4CE] Options: M-Sport [ZMP] | DDC+ARS [ZDF] | Exec [ZDB] | Driver Assist/+ [ZDA+ZDB] | Cold [ZCW] | SAT [2TB] Mods: MORR VS8.2 + PSS (20" 255F/285R) | ACS Springs | Dinan Stage 2 | StopTech BBK |
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05-30-2014, 03:06 PM | #34 |
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From what i read here and on the M5 forums even those with high flow cats still gets a cel eventually because the ecu is still not liking what its seeing from the O2 sensors.
Alan
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05-30-2014, 03:25 PM | #35 |
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More great info! Thanks.
Experiencing any "knock" with this magic box? Whether from lower octane fuel, turning up the dial or at high RPM? Last edited by Sum1.; 05-30-2014 at 03:54 PM.. |
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05-30-2014, 03:58 PM | #36 |
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The un-metered air would make sense. one additional piece of info. i ran with the BMS stage 2 set to map 1 "on" and it the cutoff in power was pretty abrupt. I set it to map 0 (stock) and it still did it but it was less noticeable, BUT also making a lot less power. So probably since the BMS is faking out the ECU to pump up the boost, getting the additional un-metered air may be causing the ECU to abruptly reduce boost. either way as long i keep that gasket tight, all is fine.
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