ati, when see boost?!?

[Need4Speed]

ok, I have a serious question for you ATI owners:

first time out today. I had 2 boost gauges in the car
(one permament and one temporary). I part throttled
the car (2/5) to 3k rpm. It started out under 20hg vacuum
at idle. At around 3k, it almost reached 0. So, I guess
the bypass might still have been blowing off boost,
but IS THIS NORMAL?

On part throttle, when do you see boost?
Do you have to really press it >50% to see boost?

I just don't want to mash it just yet. I applied pressure
to the FMU (manually with a pump) and I could hear it turn on...
I also looked at the hoses and there doesn't seem to
be a problem. I also know the bypass works because tons
of air comes out of it at idle and I can see the actuator
arm moved over.

thanks,
rob

[masshog]

I actually had the same question. I noticed that it is intermittent, if you are under 3500. It also depends on the gear. But even in a low gear, I may not feel the supercharger, unless I am at 4k. I've had my car looked at 2 times, after the install. The last time, he dynoed it, and the results seem linear. However, this is under ideal conditions. So not sure how you can tell what should happen. Can anyone talk to ATI to find out ?

[jesseenglish]

Because the bypass valve is so large, you really won't see boost unless you're really on the gas and you're above a certain RPM. For me that's around 3000.

Trust me, I had the same reservations and finally, I just really got on it and all of my questions were answered.