im about to buy a 3" MAGNAFLOW HIGH FLOW CAT and it asks if i would like to buy the air tube kit..........what the hell is an air tube kit and IS it needed?

 

Cars with air pumps need an extra tube and flange on the side of the cat to pump in extra air to improve catalyst efficiency.

Integras don't have air pumps, so you don't need it.

 

ah cool, thanks
BTW what does it do for cars w/ air pumps. pumps air to the cat?

 

The air pump is powered by a belt off the engine, like a power steering pump or an A/C compressor. It's main goal in life is to pump air straight into the cat in cars that don't have a high enough oxygen content in their exhaust to burn up the bad stuff in the cat. The additional oxygen lets the catalytic converter burn off all the extra NOx, CO, and HCx emissions.

My RX-7 came with one, a lot of domestics have them, the S2000 even has one.

 

Wonder Why The Tegs Dont

 

wonder why the tegs dont have them

 

because they have enough Oxygen in the engine, exhaust.

 

Because they are clean enough to not need them. Let's see why:

Integras, all models: Small, clean burning engines.
S2k: the most aggressive I4 ever to be marketed, so it will puke extra emmissions: needs an airpump.
Domestic V6's and V8's: huge, ineffiecient engines: needs an airpump.
Mazda Rotaries: Needs fuel to keep them cool and for slight lubrication issues: needs an airpump.

Your car is too effiencient to need an airpump in stock form. That's good, because emissions inspectors willl not have to look for them in the future (hence why my '7 is almost a year out of inspection... the air pump is gone!)

 

good to know, thanks