tsenior wrote:Tim007 wrote:
I have an ML running Chip it, 3" straight through, snorkel and EGR blank. I started playing around with the throttle body as it was playing havoc with my tune. The drive ability was not very smooth and the noise coming from the snorkel that was being fed back through the intercooler was too loud. Basically until the in opened 100% it was noisy and crap to drive. Once it opened and the throttle stayed about 25% it drove like a dream. That go me thinking so I disconnected the wiring harness to the throttle body and went for a drive. The truck drove awesome. Very smooth, spooling up quicker and the noise was gone. The problem was then the run on at shut down as the valve did not shut. I have since tried drilling holes in the valve which is much better but still a bit of run on. I would love to be able to trick the throttle body to stay open 100% all the time but to close when the ignition it turned off to make shut down smoother. If some one can help me achieve that I owe them a carton or two.
do you have your throttle body disconnected all the time?
No. I have drilled two holes in the butterfly valve that does help the problem but nothing like it being open 100% of the time which is what happens when the harness is off. The problems that causes though is you will throw a code (not a limp though) which is no drama but the shut down can be rough. A lot of mechanics call that valve an "anti-shudder valve" because that is what is stops by shutting off the air supply to the engine on shut down.