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1999 Impreza L
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566 Posts
Discussion Starter #21 (Edited)
Car looks clean.
What's the bov mod accomplish?

Thanks.


From what I've read it helps the BPV hold higher boost pressures at the cost of disabling the over-boost protection. I have boost cut so I'm not worried. I've noticed that it only opens when I shift after building peak boost or its a whole lot less noticeable compared to an unmodified one which opened at the slightest amount of boost when shifting. I've had people confuse my BPV for a BOV in my previous car.


BOV is not an option. I'm not a fan of the noise they make.
 

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1999 Impreza L
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566 Posts
Discussion Starter #23
With the mod the BPV will hold up to 24psi allegedly.

If you aren't going to run over 24 psi, then you don't need to change a thing. Buy a second USDM valve and mod it just to give it a shot, but don't drive yourself nuts trying to locate the older JDM valve.

Sounds like it might be higher. I'm assuming the stock BPV is good for 24psi.
Once I get the Flex Fuel finalized we'll see if it holds more than 24psi. Unfortunately there is only one place in Reno that has E85.
 

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1999 Impreza L
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566 Posts
Discussion Starter #24 (Edited)
Purchased a set of 03-04 JDM STI struts with JDM STI pink springs. Got tired of my tires scraping in turns and bumps (02-03 WRX SPT springs on 99 Impreza front struts and 03 Impreza rear struts).


 

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1999 Impreza L
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566 Posts
Discussion Starter #25
Fuel pump couldn't keep up at over 28PSI.
Decided to install a Walbro 535LPH and hardwire it using a Summit Racing kit.






 
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