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I once had that experience during a very cold day in Toronto while I was
driving my 5KT. I had to feather the pedal to keep the boost below 1 bar,
and the car felt absolutely fantastic. Too bad it didn't last, and didn't
repeat. I assumed that the wastegate froze shut, but that was just a
>Wow it's cold up here! (-13 deg. F!)
>So cold that when I put the stick in neutral and let the clutch out I could
>drive the car :-) Talk about viscous!
>I managed to get the car in gear, and was happily on my way to school. I
>got stuck waiting for someone to let me across the road halfway to school,
>and when I was given the chance, I pulled out, and gave the car some
>serious gas. I was slammed into my seat by the acceleration(In THIRD gear
>no less, tires slipped on dry pavement), and the computer's gauge read for
>a second 2.2 bar, with a more sustained reading of 1.7-1.8 bar! Why didn't
>the ECU shut down the engine? I _thought_ that the ECU shut down over 1.3
>bar! Several times during the drive I could get above 1.3 bar for a very
>short time(roads here are like sphagetti - not much straight stuff), and
>once I hit 1.5 bar. What's going on? I've had the ECU shut down once on
>me(another cold day) a while ago. Usually I can never get above 1.2 bar,
>unless I'm trailering something on a highway going uphill, in which case it
>tops at 1.3 bar.
>I'm used to getting excellent response in the colder weather-but this was
>ridiculous. I could get almost full boost in 1/2-3/4 of a sec. I felt
>like I was driving with a 162hp normally asp. engine!
>My only guesses are that -13 deg. F is below the ECU's operating specs, or
>the hose to the ECU had some water or something that froze in it(Does it
>get boost from that vacuum hose plugged into the pass. side unit? Also,
>where does the dash comp. display get the boost from? The ECU? If yes-I
>guess that means something's wrong with the ECU...)
>I don't think it was a instrument problem-I noticed an incredible increase
>in power, and while maintaining speeds the reading was as usual. However,
>the reading did fluctuate-it followed the normal ->->-->--->------>
>pattern, but when it should have maxed out at 1.2, it began to jump up and
>down between varying degrees of boost.
>I will see what it does tommorow-I believe it is supposed to get colder or
>stay the same as today, so I'll be able to tell if it was a freak
>malfuntion, or a reproduceable phenomenon.... if anybody has any comments
>on this, please let me know. I will post what happens tommorow...
>Call me easy to entertain/impress, but isn't it nifty when you pull out of
>an intersection and watch the guy who was behind you try to see through the
>huge cloud of vapor you left around his car? I bet he wasn't expecting fog
>that day! *-<:)
>Ah, the joy of turbos! Eh eh eh!
> '87 5kCST
San Jose, California
'87 560 SL