MPi throttle body modification (1 reply)
Right, now I've got an internet connection sorted I thought I'd put something on this new thread.
Anyone who has an MPi (or possibly an SPi - I'm not to sure) should check this out. I'd read that this was a problem so checked my Throttle body when I serviced my car and found this was the position of the throttle when wide open.
Sorry if the picture isn't too sharp, I still had the bonnet on and couldn't pull the camera any further back. The limit of the throttle is the stop next to the throttle body......so I ground it off.
Be sure to take precautions to prevent any ingress of metal/dust etc into the inlet. Hopefully you can see how I attacked the stop with the dremel type tool. I ended up with this...
As you can see, there's still a bit I could do to straighten up the flow into the throttle body but this would've involved removing bits. I didn't want to do this (I needed the car for work the next day). On the road there was a definte improvement above 3500 rpm, a bit more oomph really. It still seems to run out of breath a bit above about 5500 though :).
So go and check your's out!