ok here it is. i have my air pump set up with a custom cat on my RB full dual exaust. i just cant find the fitting that im suppost to put on the block right next to coolant inlet for the turbo. this fitting is suppost to connect with the cat to pump air into it....can i get away with emissions if i dont have that long tube??

 

Talking about your split air pipe? You most likely wont pass smog without it and will burn up your car probably as well.

 

No. The hose goes to the ACV. The air pump allso goes to the ACV.
They way the cat works is it gets air pumped to it causing the internals to heat up and burn off unburnd gas and so forth. Without it it wont burn it off so probly no you wont pass as well it will just cuse it to clog up.

 

hmmm so with the exaust how likely do you guys think ill pass

 

You wont. Try searching under the alcohal trick

 

soo, what does the air pump do besides pump air into the cat. im getting a RB header with a single exaust(2 1/2) w/ single muffler. can i get rid of the air pump if im running w/o cats?

 

Depends on what year RX-7 you have and if its turbo? What do you have?

 

87, n/a, i think that if it only dumps air into the exaust then i can do without it after i get rid of the cats.

 

Yes you can kill yours. try this
http://www.rotaryresurrection.com/ro...ssionsrem.html

 

Yes. With an N/A with no cats U can get a RB header to suit your needs. I got the Full RoadRace system & the header had a pipe to feed the actuators & came with an ACV block-off plate. It looks awesome & sounds great. Lotsa $$$$ though, but IMHO is worth it.

Ramses666

 

Actually the cat will burn up if there is NO air going to them.
The air is dumped via the ACV throughout the ports underneath the intake ports on the irons of the engine. It travels through there and then goes into a pipe, sometimes 2 that mates up with the exhaust manifold. Those little holes underneath the exhaust ports are where the air comes from. There was a really good emissions guide by ddub that instructed you how to just use the air pump to dump unmetered amounts of air into the exhaust, without the use of the ACV. His method worked quite well, and he passed. What was undecided was if too much air will harm a cat, as well know that having too little causes it to turn cherry red and die.

 

Are you sure you do not have this backwords? My exsperiance has ben no pump cloged cats bad gas milage pore performance to much back presure. My theory for compisation is. Blow into a fire and it heats up. take the air away and it dies.