HELP - cold air problem

[Romans, Mark]

If you are cooling the air that much you may be able to put in some more
timing and bring the exh temps down and make more power.
Mark
----- Original Message -----
From: "Flanagan, Stephen CECOM RDEC STCD"
<Stephen.Flanagan at mail1.monmouth.army.mil>
To: <diy_efi at diy-efi.org>
Sent: Tuesday, August 08, 2000 7:30 AM
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
>
> ----- End of forwarded message from owner-diy_efi at diy-efi.org -----
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