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smurfbus's Avatar
Join Date: Aug 2009
Location: Europe
Posts: 1,423
I just rigged up boost logging again after I had burnder my previous MAPsensor with 12V.

Here is a pic of 930 short ratio trans on 1st to 2nd and another pic of 4th gear WOT. Turbo is Holset 40super with the biggest turbine housing for T3 flange 18cm. 964 cams, 38mm intake ports, CIS SP 6bar, wcp at 6.3 bar idle and split sec for controlling enrichment. BB headers with not so good wg piping for Tial 46mm and lowsy twin scroll flange. Tires are 315/35-17.

First pic is first to second with limiter banging so the rev sensor/log stalled. I had to blib before changing to second which also spinned.

From 930

This is fourth gear WOT just to see the spool. It would go up to 1.1 bar and then taper to somewhere 0.9 bar.

From 930

I might need to address that 3500rpm notch on fueling if it does not affect other areas.


From 930
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79 930: HX40S#16, MS3pro+ID1000+044+E85, Ignition: 123/TUNE/MSD6A, True split BB, 2*turbosmart38

Last edited by smurfbus; 06-02-2014 at 05:59 AM.. Reason: More info
Old 06-02-2014, 03:52 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #81 (permalink)
Chain fence eating turbo
Join Date: Dec 2008
Location: Austin, TX
Posts: 8,714
Mine does the same. It'll spike and taper down from 2nd through 5th. Nature of the Holset's turbines I guess.
Old 06-02-2014, 10:03 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #82 (permalink)

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