R56 Turbo lag?
#1
Join Date: Dec 2006
Location: Hot Springs Village, AR
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Turbo lag?
Last weekend I had a problem with turbo lag for the first time since I got my car over a year ago. I was in a driving course taught by Michael Ferguson on the grounds of the East Texas Police Academy (highly recommended, BTW). One of the exercises was a course with very tight turns--the more cones you dropped, the more "babies" you had killed. At two points you had a chance to go straight--midway and at the end. I didn't notice anything unusual at the mid-straight, but I sure did at the last corner. Please understand that even the mid-straight was short (1/4-1/2 block?). The problem came when rounding the final corner--you had just enough time to stand on it before you crossed the timing pylons. Except that standing on it didn't produce anything.
Some people (including Ferg, as I recall) said it was the heat from the frequent runs. Could that be? I mean, I really had NO power with foot floored. Everything's been fine ever since, so I don't think there is anything fundamentally wrong with the turbocharger, but I'm really puzzled about this. I had an instructor riding with me for part of the time, and she kept telling me to "go, go, go," but Zippeee! wasn't having any of it.
Thoughts?
Some people (including Ferg, as I recall) said it was the heat from the frequent runs. Could that be? I mean, I really had NO power with foot floored. Everything's been fine ever since, so I don't think there is anything fundamentally wrong with the turbocharger, but I'm really puzzled about this. I had an instructor riding with me for part of the time, and she kept telling me to "go, go, go," but Zippeee! wasn't having any of it.
Thoughts?
#5
That will help a little, but not to much unfortunately. The cure for heatsoak is generally a larger, front mount intercooler so that it cools more efficiently while driving the car. And to try and cool even more than that would be to put an intercooler sprayer on the new front mount intercooler so it sprays water or CO2 on the intercooler to help it cool down the gasses flowing through it even more.
#6
#7
The stock R56 MCS intercooler is fine if you're on a big open roadcourse racetrack or on the interstate, however as others have stated, in tight & slow city driving or autocrossing, it gets heat soaked quickly, killing power. I also noticed the intercooler getting reasonably warm [as indicated with IAT's through OBDII] during a chassis dyno session.
Bottom line, it sounds like a better intercooler is in the cards for you!
Bottom line, it sounds like a better intercooler is in the cards for you!
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