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Old 02-23-2013, 07:34 PM   #12
Scooby Newbie
Member#: 294644
Join Date: Sep 2011
Chapter/Region: MAIC
Location: Washington DC
2011 WRX Agile Auto
DGM 440whp 420wtq


Originally Posted by SeeeeeYa View Post
Before you blame the BOV, consider your compensations.

I'm pretty sure it has not been hot where you live lately. If your temps have been in the range it has been here your temp comps, alone, will reduce your boost that much. This is due to the ECU trying to keep power levels even. If you had logs from warmer times on the same setup you could reference you would likely note that your g/sec is very close, despite your boost being lower.

In short, don't change a thing until it get over 60F, or you risk issues you don't want. Slightly lower boost when it's colder out is way better than too much boost once its hot.

Also, as for the pressure drop of a TMIC, your PW has less drop than your OEM one, which will give you more, not less, pressure all things equal.

Ahhh I did not know that the ecu did this. I figured it would always go to 20 psi. Thanks for the input. I haven't done any revisions on my map since I'm waiting on a wideband and BFM cable in the mail. I've been bugging Eric at TP too but he said I might have a small leak since the needle on my boost gauge vibrated at WOT. I changed my bpv spring to a slightly stiffer one and now boost definitely comes on sooner and hits the full 20psi although it was definitely warmer today compared to when I did those first logs. So it may have been a combination of both. But this is good knowledge to know for the future! Thanks for the help, I really do appreciate it.
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