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2010 2011 BMW 5 Series Forum F10 N55 Behind the Grill Intake DIY |
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05-14-2021, 09:13 AM | #23 | |||
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The important thing about the MAF is that it reads how much the passing air cools the wire, and then based on that it calculates the air flow assuming stock intake tubing sizes. The stock intake at the MAF is roughly 3" which is what I have here so I expect no MAF issues. What I don't understand is how all the extra air could negatively impact WGDC... above my pay grade. |
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05-14-2021, 11:27 AM | #25 | |
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So I see your logic in saying the T-map sensor shouldn't be impacted post turbo but I also trust David way more than anyone... so it's a question of understanding the cause and effect of extra intake air impacting WGDC. That's what we don't know. I will try to get him to educate me and pass on the info. Man I'd love to know what he knows and be able to tune like he does... |
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05-14-2021, 12:58 PM | #26 | |
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Ten years ago when I lived in Miami, I watched Mike at ActiveAutowerke put a safe tune on my turbo'd E46 (was not ready for full on tuning yet so we put a rich tune with a 5000 rpm redline as a temporary tune). He was moving so quickly that I didn't get to ask him much lol. It looked like an old DOS interface (well, lack of interface really. No graphs. it was just black screen and a ton of numbers and letters. Looked like the matrix backdrop )
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05-14-2021, 01:34 PM | #27 | |||
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05-14-2021, 01:55 PM | #28 |
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Looks like my inlet isn't lining up the way I'd hoped, need to do some more trimming - it is TIGHT!!!
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05-14-2021, 01:59 PM | #29 |
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05-14-2021, 02:03 PM | #30 |
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What inlet did you end up using?
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05-14-2021, 02:29 PM | #31 |
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Progress, this is gonna work and solves multiple issues!!!
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05-14-2021, 04:50 PM | #32 |
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05-14-2021, 07:30 PM | #33 |
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Nice shit bro! You will def. need a rescale to take advantage of the extra air coming into the intake. Turbo will spin faster with incoming air and will affect the WGDC depending on the density of air. I personally noticed a big difference once we were going up in revisions.
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05-14-2021, 09:23 PM | #34 | |
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05-15-2021, 12:41 PM | #35 |
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Done
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05-15-2021, 02:39 PM | #36 |
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I looked at your mock up and I see what you're doing now. So you're keeping all the piping on the turbo side, eliminating that whole plastic piping that goes up and over the engine. Brilliant. I'm sure that would work the same with my car, I haven't really gotten in there to see clearance but I have a lot of space under the hood of the X5.
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05-15-2021, 10:26 PM | #38 |
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It is on my insta browbmw but here you go...
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05-15-2021, 11:45 PM | #39 |
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05-17-2021, 10:55 AM | #40 |
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Here is why building boost too soon with too much air might be an issue... if it spools too soon and you hit 100% WGDC at a low RPM, the boost will fall off... maybe it's better to hit boost at a more optimal RPM? Here is a short read that helps...
https://www.stratifiedauto.com/blog/...-turbo-setups/ |
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05-17-2021, 12:04 PM | #41 | |
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05-17-2021, 01:06 PM | #42 |
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Man... I would have loved to know but I have NO data logs pre PS2 or Pre Kidney intake.
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05-17-2021, 01:36 PM | #43 | |
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05-17-2021, 03:00 PM | #44 |
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We can fix that good sir. Im booked up for tonight but... tomorrow (if weather allows) I can do a log to show the WGDC Vs Actual Boost on my car (PWG, FBO on Stage2+ E40, and stock turbo with BMS intake). Not exactly apples to apples but it would get the point across.
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