HELP - cold air problem

[Programmer]

Could you post your EGT's and what fuel you're using ?
How long into the run does it start to drop out ?
What injection system, injectors, pressure, etc...don't worry
I won't out do ya at the track <g>.

-----Original Message-----
From: Flanagan, Stephen CECOM RDEC STCD
<Stephen.Flanagan at mail1.monmouth.army.mil>
To: 'diy_efi at diy-efi.org' <diy_efi at diy-efi.org>
Date: August 9, 2000 9:38 PM
Subject: HELP - cold air problem


>I am running a single turbo with a sheet metal intake.  Car has made some
>great HP to date but I have been only using an air to air intercooler.
>
>With the air/air the air charge goes from 100 deg up to about 270 deg (+/-
>20deg)
>depending on the days conditions.
>
>I had my intercooler boxed in and now have an ice-water/air intercooler,
now
>the air charge goes from 70 deg up to about 130 deg.  The car runs great
>through
>1st gear, but breaks up in high gear (2 speed automatic - powerglide).
>Spend several
>days on the track and 8 pulls on a dyno using WB02 (Horiba).  The only way
>to clean up
>the high gear was to lean it out, but the egts went way too high.
>
>Does anyone have any ideas what could be the major problem?  I am thinking
>that the
>fuel may not be atomized correctly at the colder temps, if so, what is a
>good action
>to try.
>
>I have seemed to lose around 150 hp after the intercooler change.  car was
>running
>high 7'50s, now it is running 7.70s to 7.90s.  I do not want to get rid of
>the
>cold air intercooler because I know it is worth at least 100 hp.  (Keep in
>mind this
>is on a 1500+ hp setup).
>
>TIA, Steve F
>
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