Ok, well...I installed my Stillen pipe and PR CAI the other day, and i guess having the better flow made a previously small problem quite anoying now.

When i am stopped at a light in DRIVE, i get this vibration coming from the engine like if my idle was too low. I know i dont need to adjust the idle, thats not the problem. I am pretty sure its a vacum leak (at least thats what it seams like) but i cant find it for the life of me!!!

Keep in mind that this vibration only happens in drive, when i put it into NUETRAL it completely stops, and sometimes when i put it from nuetral back into drive it goes away. This is a completely inconsistent problem, and the only time i seam to hear the hissing of the leak is when its in drive but even then i have NO IDEA where it could be coming from.

I also replaced about 99% of the vacume lines in there about a couple months ago, i say 99% because i did all the ones i could see when i had my Intake manifold off, maybe there is more?

Anyone have any ideas of how i should solve this? One thing i was thinking was when i cleaned my IACV i used the original gasket, and i also remember it being cracked on one side, but i dont think a leak THAT small could cause anything noticeable like what i am experiencing now...

Thanks ahead of time...

 

camon, no one can give me some advice?