[s-cars] HELP!! Intermittent Boost Loss (Kind o' long)

[mlp qwest]

Brian -

Can you check your intake manifold inlet temperatures?
Could it be you heat soaked your IC with the early hard pulls?
I don't think things will go back to normal till you get
your inlet temps to go back down.  The DAveTron is kind of
nice for checking on this if you've had it installed.

Baring a DaveTron, try dumping or spraying a bucket of
water in on the IC when the problem first crops up.
You should hear a sizzle, or at least see a little water
vapor steam off, then .... ????  Inquiring minds want to know if the problem
stops?

mlp

~-----Original Message-----
~From: s-car-list On Behalf Of brian bilotti
~
~Dear S-Heads,
~Yesterday I was doing some hard pulls and I noticed
~that when getting to 20lbs (software will go to 24) it
~would back off to 10lbs, ambient air temp 67 F. This
~wouldn't happen everytime though. Ok, me thinks it's
~software related, I swap out the box and put in hotter
~s'ware, hmmm, initially one backoff then presto,
~nomore boost loss, holds 26 lbs as long I want it to.
~Ok, try 3rd box, similar s'ware to #2, same thing, no
~problem. Then, on my way home w/#3 plugged in, get
~symptoms again, go to 20 won't go further, hold for a
~bit, then back down. Also seemed to flutter a bit like
~a bad plug (more on that later)
~No fault codes, doesn't seem to be an air leak (not
~consistent enough), plugs (less than 5000 miles)-
~don't think it would cause this symptom but I checked
~anyway- all perfect.
~Any suggestions about the cause of this from our
~collective brain trust would be greatly appreciated as
~I have a Q'club event at Laguna Seca Raceway on
~Tuesday
~:-).
~May the rings be with you......
~Brian Bilotti "Edwin"
~
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