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Cold engine full throttle?

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Old Jan 30, 2009 | 01:27 PM
  #16  
baylorar's Avatar
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From: San Diego, CA
Originally Posted by dan628
If you have the stock Boost control solenoid and hit full throttle when its cold, it only hits like 10 PSI of boost.
Bingo. The stock bcs and stock ecu limit the boost you get until the coolant gets to a certain temp. You can see these tables if you look at your ROM. You had to notice the car wasn't as quick as it normally is. Evo ECU is one smart cookie
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Old Jan 30, 2009 | 01:29 PM
  #17  
Johnboy1065's Avatar
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From: Knoxville Tennessee
Originally Posted by Ted B
The quickest way to accelerate engine wear is to run it hard when cold.

Engine coolant temperature reflects the temperatures of the internals. The internals are built such that the proper clearances are attained when the engine is at full operating temperature (which causes metal parts to expand to spec). Anything less has the tolerances running out of spec, which increases wear.

The oil requires more time than the coolant to come to full operating temperature, and until it does, it will not behave like its expected viscosity. This can create a starvation issue at high rpm, where oiling demand is high, and the oil cannot flow well enough to satisfy demand. Modern BMWs even have a moving redline on the tach that starts low when the oil temp is cold, and movers higher as the oil gets hot. The best policy is to not ask a lot of rpm or load from an engine until the oil is at least 170deg F (75 deg C).

To a high performance engine, an oil temp gauge is as valuable as a coolant temp gauge.
^^^ you speak the truth,

everytime I visit the local autozone or some other places the rednecks in there always say "GIT ON R when ya leaves" lol

I always tell them the exact same thing, I can't, the car isnt warmed up.....and the sad thing is these autozone people are supposed to know about cars lol

I also have a friend that wants me to get on it all the time right when I start the car, and I tell him the same thing everytime, some people never learn lol

but in the case of the OP, it doesnt sound like you have really done long term damage to your engine or anything

Last edited by Johnboy1065; Jan 30, 2009 at 01:33 PM.
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Old Jan 30, 2009 | 02:41 PM
  #18  
05ah8james's Avatar
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From: Connecticut
If its a stock motor it will be fine no doubt. If its a built motor and you doo that to many times, you're going to have problems
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Old Jan 30, 2009 | 03:40 PM
  #19  
tofuprince's Avatar
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From: los angeles
There is not much to worry about now since it's already done.
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Old Jan 30, 2009 | 03:51 PM
  #20  
sdfontanini's Avatar
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From: Denver, CO
Don't drive your car until the temp gauge (water temp gauge on the dash) starts to move. Even then I usually wait till it's at least a 1/4 way to it's operating temp. And of course you should stay below 3K rmps until it's fully warmed up.

Your engine oil will take even longer and the tranny fluid just as long, so it's best to start giving her hell only once the water temp gauge is at it's peak, even then I like to ease into it until my engine oils at it's normal operating temp.

Or you can do the exact opposite and blow up your engine, that's pretty easy. Try starting the car from a cold start and then do a lauch at 6,500 rpms. And don't forget to hit the N2O...
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