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Old 04-05-2012, 08:50 PM   #1
Soarer
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Default Boost Issue While Tuning

I've been working on tuning my 2002 wrx ej205 motor with vf43, sti tmic, dw650cc injectors, spt intake, perrin hard inlet pipe, up & down pipes, 3" exhaust and Grimmspeed electronic boost control solenoid.

The issue I'm running into is that when running 80% duty cycle on the boost control solenoid, I'm only hitting 12.5 psi. Why would I be underboosting like this? I should be running more like 17 psi at 65% duty cycle, so I'm told. Any input?
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Old 04-06-2012, 10:43 AM   #2
AREA1320
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Boost leaks?
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Old 04-09-2012, 05:12 PM   #3
Soarer
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Quote:
Originally Posted by AREA1320 View Post
Boost leaks?
Nope, no leaks. In my experience, if there was a boost leak, it would be pretty obvious. Also, upon reverting to an older map, the boost levels went back up.
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Old 04-10-2012, 12:53 PM   #4
LTM87
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Do you have a log available that we could look at?
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Old 04-10-2012, 01:29 PM   #5
wrxkid2003
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There is a lot that could cause this a log and you map ,if you can share it, would me big help.
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Old 04-10-2012, 02:05 PM   #6
Dartholomew
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When you're saying your running 80% vs. 60% wgdc, are these from your logs or what you have set as targets in your map?

If you have no leaks, and boost levels return to normal with another map, then it could be in your tables, no? Easiest thing to do may be to run a map compare and see if you've got adjustments or scalings in your target boost, turbo dynamics, or other compensation tables that would affect your maximum boost.
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Old 04-12-2012, 01:08 PM   #7
Soarer
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Got this sorted out. It turns out that the tuning software for some reason was running the atmospheric adjustments. We had turned this off but for some strange reason on the 10th reflash, it turned them back on. Once we clicked them off, it started working as it should.
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