Originally takin from another thread but i decided to make my own...

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2k.civic.si &raquo;</TD></TR><TR><TD CLASS="quote">the stock narrowband o2 sensor can not be used for tuning.
take it from someone who owns a wideband...get one before you start your motor...a poor tune can kill a motor faster then anything.....to rich and cylinder walls get washed and rings wont seal for ****....to lean and pistons over expand and wow damage city to both the pistons and cylinder walls...

cost of new motor= $$$
cost of wideband = $200-400 depending on features</TD></TR></TABLE>
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Since ive put my B@M fpr and gauge in ive been messin with it just by the gauge and the a/f gauge...

its set on about 38/40 psi and seems to idle in the same pattern and run the same according to my gauge before and after the b@m...

but a question that i have is on the VAFC..

the Pressure is different, around 7,500rpm it is down to around -10 /2 .. when befoer it would stay in the -hundreds

what are those numbers reading actually? what is it suppost to be?
thanks