well ive been noticing a hissing sound and i know its not my SRI i may be thinking its my headers leaking since i never re tightened the bolts...what do you guys think?

 

Yeah. Has it thrown a check engine light yet? Mine did after a long time of hearing that noise.

An easy way to test without another person is one of two ways.

1. Start your car early early in the morning on a colder day and then you should see the white exhaust from the leak
2. Wrap a single layer of aluminum foil around the flange where your headers meet and also where they meet the block. Start the car. Check for ripped foil, if there is none, give it a good rev or two and you should have found it.

 

yeah its been going on and off for a while...like it will stay on for a day or less and goes off...then a couple days later it does the same...i like the foil idea thanks for the tip buddy

 

No problem! Let us know how it turns out!