gavsdavs wrote:do you mean the Carina gearbo, not the avensis ?
No, i mean the Avensis.
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gavsdavs wrote:do you mean the Carina gearbo, not the avensis ?
ashley wrote:Protok wrote:ashley wrote:
Looking at the dyno graphs I'd want the map checking anyway...they just don't look right to me
Why so?
If it's cause of the curve then all turbo'd beams go straight up like that
Mine was making 1bar of boost at 2300rpm though with the disadvantage of nothing after 6700rpm.
Nope- I get the torque curve as it spools up, pretty much what you'd expect on a smallish framed turbo on a 2l engine. What I don't get is that torque then instantly takes a nose dive, flattens back out briefly before tailing off again...Makes for a very strange power curve, I'm guessing when you drive it, it goes, feels a bit flat, then picks up again...
My guess is that the variable cam is activated around 5.1k rpm, which gives the engine a bit more airflow allowing the turbo to flow better and so pushing the torque curve to the right a bit.
Can you tell the cams when to come in? If it was me I'd be trying to map them in around 4.7 - 4.8k instead- you might avoid the nose dive in torque at that point then, and would probably increase peak torque attained.
That's my guess anyway...would certainly be worth playing with on the dyno......