Hey, just installed my peakboost kit, runs awesome and pulls hard, My blow off valve though is getting sucked 1/2 open at idle though. This is on a built b20/vtec. The Bov is closed when the car is off but as soon as i start it, you can watch the BOV open as the vacuum builds. I am also getting a little bit of compressor surge when no at WOT and letting off. I'm running about 12psi on a t3/tO4E. Anyone else using a different spring? How do I fix my problem?

 

What spring are you using? Here is the chart from tial:

Engine Vacuum Reading...........Use Spring

- 22 and -23 in/Hg................-12 Psi (-24 in/Hg )
-18 and -21 in/Hg.................-11 Psi (-22 in/Hg )
- 14 and -17 in/Hg................-9 Psi (-18 in/Hg )
-10 and -13 in/Hg.................-7 Psi (-14 in/Hg )

match the vacuum ur car pulls at idle to the correct spring

 

its normal for it to be open at idle, as for youy getting compressor surge, does it have a good vacuum source? Also the tials arent adjustable without changing the spring but i think you'll be fine with a little surge it never hurt anyone

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Soccerking3000 &raquo;</TD></TR><TR><TD CLASS="quote">its normal for it to be open at idle, as for youy getting compressor surge, does it have a good vacuum source? Also the tials arent adjustable without changing the spring but i think you'll be fine with a little surge it never hurt anyone</TD></TR></TABLE>

Yeah I know I'm the n00b, but wouldn't spending $200 on a BOV and still have compressor surge defeat the whole purpose of it?

 

Mine also stays open at idle..I think thats just normal...And mine is run right off my GE vacuum box...

 

12psi spring here..and no problems at all