well when i put the other one on it didnt work at all. the car would rev up to 3500-4000 rpms, there was a high pitched whine like a vacuum leak, and the whole time the throttle was closed. everything was hooked up the same as the stock tb, i even switched all the sensors and shit from the stock tb to the LS and it didnt work. i took a look at both of them and noticed that on the LS there were certain ports that were closed off on it, and on the stock they were open. any ideas?