DISA Motor Maintenance

SDemetris · 12-23-2013, 04:45 PM

So I've read some threads about DISA flap failures and got kinda nervous and was wondering how often you guys check yours. The first one seems easy to pull out but the second seems like i would have to take off the whole manifold to get to it. It looks like you just need a few torx wrenches. If I remember correctly, the car I got my 3 stage IM from had 27k on it and i probably put around 10-15k on it since then so it should be good for a while, but I was just curious if you guys regularly pull yours out or if there's another way to tell if theyre working without taking the manifold out.

nate5ks · 12-23-2013, 06:08 PM

They will throw codes if they're not working I think.

andrey_gta · 12-23-2013, 07:46 PM

On e46, if you pull one out you can tell its bad if it wiggles alot.
On n52 only the large one is easily accessible, therefore its one only on you can check.

personally I think this design will only fail in electronics, as the recent threads suggest with the weird noises.

SDemetris · 12-23-2013, 10:44 PM

What i may do is put a gopro or something similar in the engine bay and see if i hear any weird noises occasionally. I sometimes get a rough idle at about 1k rpm on cold starts but im just attributing that to being around 40F or less some times

12-23-2013, 04:45 PM	#1
SDemetris FSAE Dude 62 Rep 759 Posts Drives: E90 328xi Join Date: Jul 2012 Location: Pittsburgh, PA iTrader: (0)	DISA Motor Maintenance So I've read some threads about DISA flap failures and got kinda nervous and was wondering how often you guys check yours. The first one seems easy to pull out but the second seems like i would have to take off the whole manifold to get to it. It looks like you just need a few torx wrenches. If I remember correctly, the car I got my 3 stage IM from had 27k on it and i probably put around 10-15k on it since then so it should be good for a while, but I was just curious if you guys regularly pull yours out or if there's another way to tell if theyre working without taking the manifold out. __________________ 2007 TiAg 328xi: AA Tune, AFE intake, Full exhaust, 335xi Brakes, H&R RSB, UUC FSB, H&R Sports, Billy Sports...BBS SR 17x8 1985 Gazelle Beige 325e: Poly everything, e24 3.25 LSD, 225 lb weight reduction, Corbeau FX1, Shifter machined by me, roll bar, harness, all the other goodies. My "Racecar"...15x7 BBS RA
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12-23-2013, 06:08 PM	#2
nate5ks Captain 35 Rep 648 Posts Drives: 2006 BMW 330xi Join Date: Nov 2011 Location: Jacksonville Beach, FL iTrader: (0)	They will throw codes if they're not working I think.
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12-23-2013, 07:46 PM	#3
andrey_gta Brigadier General 318 Rep 4,040 Posts Drives: 130i coupé ;) Join Date: Nov 2011 Location: Bimmerpost iTrader: (1) Garage List 2008 BMW 128i [10.00]	On e46, if you pull one out you can tell its bad if it wiggles alot. On n52 only the large one is easily accessible, therefore its one only on you can check. personally I think this design will only fail in electronics, as the recent threads suggest with the weird noises. __________________ 128i Sport 6MT converted to Euro 130i spec, 3.73 diff, tuned by evolve ~220 whp 207 wtq(ft-lb) SAE In-progress: //M front arm, M3 rack, e36M lip Wishlist: Coils, n55 mnts, headers, LSD, e60 finn diff "The 1-series is the last car that BMW engineered before the Germans, as a car-making culture, fell out of love with driving." - R&T 2013 135is
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12-23-2013, 10:44 PM	#4
SDemetris FSAE Dude 62 Rep 759 Posts Drives: E90 328xi Join Date: Jul 2012 Location: Pittsburgh, PA iTrader: (0)	What i may do is put a gopro or something similar in the engine bay and see if i hear any weird noises occasionally. I sometimes get a rough idle at about 1k rpm on cold starts but im just attributing that to being around 40F or less some times __________________ 2007 TiAg 328xi: AA Tune, AFE intake, Full exhaust, 335xi Brakes, H&R RSB, UUC FSB, H&R Sports, Billy Sports...BBS SR 17x8 1985 Gazelle Beige 325e: Poly everything, e24 3.25 LSD, 225 lb weight reduction, Corbeau FX1, Shifter machined by me, roll bar, harness, all the other goodies. My "Racecar"...15x7 BBS RA
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