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  #21  
Old 10-19-2019, 05:47 PM
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^Phew!!! Just in time. When we'd see m54's come into the shop needing a DISA we were always worried the pin would be precariously sitting somewhere waiting to fall into the intake runners.
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  #22  
Old 10-19-2019, 05:56 PM
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GOT HER BACK GUYS!

Yeah that one was pretty close. The video actually exposed the issues. In the first pass we could hear 3 slight misses in the top of second gear. I think the MAF was the primary cause, however decided to inspect the DISA. I was pretty shocked.

Took her to the top a couple times in second gear and no missing. They were definitely due, there was a moderate power gain.
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  #23  
Old 11-14-2019, 08:54 PM
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The blow off is pretty nasty on this build. Remember there is a MAF, so itís not atmospheric.

Anyone agree?
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  #24  
Old 11-14-2019, 09:10 PM
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Blow off or blow by?

Is tuning available to make it MAP based vs MAF based?
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2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)


2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)
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  #25  
Old 11-14-2019, 09:35 PM
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Quote:
Originally Posted by crystalworks View Post
Blow off or blow by?

Is tuning available to make it MAP based vs MAF based?


So Crystal I think you are correct. It would be blow by right?

I did not choose alpha-n because of smog in California. I was able to pass at least twice, which worked out well. Visual was overlooked.

In Texas we still have inspection. I wanted the X5 to able, under any circumstances.

So, if itís blow by and the microphone caught that release of pressure, I would say the RMS kit it pretty aggressive.

Right?
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  #26  
Old 11-14-2019, 09:40 PM
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GOT HER BACK GUYS!

Andrew, Overboost, and Bcredliner. I would like to hear your feed back as well regarding reprogramming.

Last edited by Happy; 11-14-2019 at 09:57 PM.
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  #27  
Old 11-15-2019, 11:52 AM
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Does it have a "blow off" valve? I'm more familiar with turbo than supercharger but I would think you would still want the pressure to be released to atmosphere after lift off.

I was asking if you meant blow by, oil/boost making it past the piston rings. Wasn't sure what you were referring to in post 23.
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2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)


2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)
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  #28  
Old 11-15-2019, 12:24 PM
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It does, but I think you refreshed my memory that it is a bypass vs blow off. If it were to blow off MAF would detect irregularity, so it puts it back into the system.

I rarely drive the X that hard but I was shocked myself to hear what sounded like blow off.

There is no blow by from the rings, but itís a bit rich. Thatís why Iím mulling of the idea of reprogramming, because how darn hot it get here during the summer.

I just keep hear an old saying, ďleave well enough aloneĒ. LoL..
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  #29  
Old 11-19-2019, 12:18 AM
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Quote:
Originally Posted by crystalworks View Post
Sounded like a large diesel truck in the first drive away.
Kinda does sound like a Cummings. Itís gotta be the torque?

Right?
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