What is typical for a boosted honda? About -18/-20?

My car seems to run just fine, but my AEM is saying -9/-10 during idle. Do I have a vacumm leak of some sorts? When it does heat up the idle does kinda get funky every so often where the AF will just kinda jump from 12-14.7 and fluctuate a lil bit.

I was just messing with my AEM today and kinda noticed it so I thought I would get a 2nd opinion.

 

I see about 24-27 inches HG @ idle

Do you have a regular boost guage?

 

^^^24-27in wow thats a lot...when my car runs...lol i see about 20-22in about 26 or so on decel

 

I get between 20-22in/Hg at idle.

 

.7 bar which is around 20-22 right?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by StolenTeg &raquo;</TD></TR><TR><TD CLASS="quote">.7 bar which is around 20-22 right?</TD></TR></TABLE>

20.6 inHg

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B20luda &raquo;</TD></TR><TR><TD CLASS="quote">^^^24-27in wow thats a lot...when my car runs...lol i see about 20-22in about 26 or so on decel</TD></TR></TABLE>

You are correct sir... had to run out to my car to test again... I see 22 inHg idling my car parked and 24-27 inHG decelerating

 

yup 20-22 is pretty normal for Ds and Bs

 

is your purge valve unpluged?

 

my gauge actually does read about -24in/hg at idle on my D.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SOHC_MShue &raquo;</TD></TR><TR><TD CLASS="quote">my gauge actually does read about -24in/hg at idle on my D. </TD></TR></TABLE>

your gauge is broken

 

480-500 mmhg That's about 18-20 inhg from what I can tell.

 

mine was 20-22

 

20-22 at idle, and 25-28 upon decel here. thats on a 200k+ mile motor too hahaha

 

Thanks for the feedback guys. My boost guage reads .6 bar.

 

i get 15in/hg at idle and 20-22 in/hg on decel?s that normal, this is a good question and does turbo size affect this??

 

a bigger motor will pull more vacuum...an h22 will pull more then a gsr

a 84 mm gsr will pull more then a stock 81mm gsr

 

Doesn't a set of bad valve seals also affect this?

I get -18", I know my cyl. head is beat.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by raene &raquo;</TD></TR><TR><TD CLASS="quote">Doesn't a set of bad valve seals also affect this?

I get -18", I know my cyl. head is beat. </TD></TR></TABLE>

im not sure. i am fairly positive im burning oil from my valve seals, and i still pull 185-190 compression (b18b) and 20-22 idle vacuum

 

mine changes....when my idle is cool it pulls -20 , but sometimes my car acts wierd and goes to -17 -18

 

I see so smaller engine+bigger turbo must mean that you will see less vacuum. I have a b16 with T3T4 and I see -15in/hg at idle and about -20 at decel.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fastrunner &raquo;</TD></TR><TR><TD CLASS="quote">I see so smaller engine+bigger turbo must mean that you will see less vacuum. I have a b16 with T3T4 and I see -15in/hg at idle and about -20 at decel.</TD></TR></TABLE>
i don't see how turbo size would effect your idle vacuum. -15 is way high. You should be lower.

 

20-22in at idle, 24-26 on decel. it sucks....literally.

 

i have around 6 in/hg at idle, cam duration is great so its bleeding off manifold pressure

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by D@nnY &raquo;</TD></TR><TR><TD CLASS="quote">your gauge is broken </TD></TR></TABLE>
you are correct sir. I just checked the datalogs today and i idle at about 330mbar which is right around -20in/hg. I wonder why my gauge reads off in vacuum...it doesn't in boost