| replace them with straight pipes or test pipes. The tubes that hook into the exhaust just before the catalytic converters are the AIV air tubes. The AIV system can also be deleted. If you use Search on this site you will prob find everything you need to know and more. Will you pass emissions testing without your cats? There is also an exhaust write up and an AIV delete write up on my web site - [ www.twinturbo.info ] under z32. Welcome to this site. You would do well to enter your vehicle info also under your member page.

"Straight-line acceleration is probably the first aspect of automotive performance that any intelligent driver gets bored with." Peter Gregg
"We owe a lot to the dragsters. They always break something, figure out a way to beef up the part and the benefit trickles down." Robo
"Not everything that can be counted counts. Not everything that counts can be counted." Einstein
"And now my friend, the first-a rule of Italian driving, [Franco rips off his rear-view mirror and throws it out of the car] what's-a behind me is not important." Raul Julia, playing Franco Bertollini while driving a Ferrari Daytona in the movie Gumball Rally
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