i removed the AIR system when i put in my LTs....
now when i start the car it sounds like air leaking out somewhere.... or being sucked in... either way it wasn't there before and i'm wondering if i need to plug something and whether it's something that could harm my engine?
i can try to describe it better a bit later, lack of sleep is limiting my thought capacity... also, it seems to fade away for the most part as the engine warms up... sometimes it goes completely away, others it will stay, jus very faint...

any help is appreciated!!

 

did u disconnect the AIR pump or is it still electrically hooked up cause that might be what ur hearin once the car gets warm enough the AIR pump stops cycling(the pcm thinks the cats get warm no xtra o2 need to help light the cats off)

 

yep try taking the pump out and taking the fuse out also

 

I also think its the air pump , I had the exact same symptoms...I had pulled the fuse and I also went underneath the front drivers side and took all the air pump hoses ,connections, and the pump itself out...it was a bit of weight saving too boot

 

the pump and all tubing is sitting in the garage, so it can't be that
there was a small tube that connected to the top of the junction for all the tubing, but i plugged that on one of the bolts that was around it

anything else it could be? i can't see the fuse doing anything, but once i get my PCM and TB back ill pull the fuse and see if that does anything