Mazdatrix Gray Area Exhaust
Joined: Oct 2005
Posts: 1,329
Likes: 8
From: SF Bay Area, California
Originally Posted by steve84GS TII
The Bonez cat will effectively replace all the stock cats.I have a friend who's stock 87 N/A passes fine with just the single Bonez main cat and the R.P. presilencer filling in for the precats (visually).
I install my stock precat on the turbo during smog time simply to keep the visual inspection guys happy.It might help me pass the sniffer test a little since I have a streetport,but Im sure the Bonez is doing most of the work.
I install my stock precat on the turbo during smog time simply to keep the visual inspection guys happy.It might help me pass the sniffer test a little since I have a streetport,but Im sure the Bonez is doing most of the work.
Thread Starter
Joined: May 2005
Posts: 625
Likes: 0
From: Norfolk, VA
Originally Posted by boyee
very interesting. hope this works out for me too! i hope my air injection works. my air pump sucks in air because i can feel it when i take off the top hose but im not sure about my air control valve.. ahh i gotta look on how to test those.. does it say in the fsm? hmm what else... oh yea. will the bonez cat last for another two years to smog again? or should i take it off and buy a rb presilencer.. but then where will the air injection hose go.. oh well
Joined: Oct 2005
Posts: 1,329
Likes: 8
From: SF Bay Area, California
oohhh right... hmmm sounds like an easy install which i might spend my money on to improve performance and so i dont have to use the bonez cat until 2 years later... if my car passes smog first now. anyways for your gray area exhaust.. i have no idea sorry. if my bonez cat system will pass smog i will let u know to recomend the system to you. also tune up such as plugs, wires, oil, oil filter, cap, rotor, even seafoam will all help you achieve better numbers for smog
Thread Starter
Joined: May 2005
Posts: 625
Likes: 0
From: Norfolk, VA
so rotary performance in manasas just got back to me about what they think I should do and they said I need to reinstall the aiir pump, the converters and the acv. Whats an acv?
thanks
glewis...OUT
thanks
glewis...OUT
"1ST GENS" THE REAL RX-7!
Joined: Apr 2005
Posts: 861
Likes: 0
From: long island
You can make a friend at a local Auto Dealership and when the "Lease Returns" go back to the dealership with a good portion of the inspection still left on them use a hair dryer and a new blade to remove the sticker and place on your car.
Shhhhh dont tell anyone but I have been doing this for 2 years now with my REX.
But I work for the dealership so its a little easier for me.
J
Shhhhh dont tell anyone but I have been doing this for 2 years now with my REX.
But I work for the dealership so its a little easier for me.
J
Full Member
Joined: Jul 2006
Posts: 54
Likes: 0
From: Alaska
Originally Posted by glewsRx
so rotary performance in manasas just got back to me about what they think I should do and they said I need to reinstall the aiir pump, the converters and the acv. Whats an acv?
thanks
glewis...OUT
thanks
glewis...OUT
The ACV is your Air Control Valve, which you removed if you did the rat's nest removal. The spot where the ACV goes is where you put that blocking plate on the intake manifold. There is a very short hose that connects the ACV to the Air Pump, which is driven by the pulley.
FB+FC=F-ME
Joined: Jul 2004
Posts: 3,353
Likes: 5
From: Rohnert Park CA
In a nutshell.....the ACV is the brains of the air injection system.Its a little silver box that bolts to the side of the intake manifold and has various hoes and wires coming off of it.
The airpump pushes the air and the ACV decides where the air is sent,depending on what the computor is telling it about the engine.The ACV can send the air to the front cat(s),the main cat (or both),to the exhaust ports or back to the air cleaner if no air to the exhaust system is needed.
This is all done to control smog effectively under all temps and conditions.It also helps to prevent overheating of the cats,due to the rotaries heavy polluting nature and in part,the tendency for American drivers to be stuck idling in traffic a lot. No airflow=no cat cooling....
The airpump pushes the air and the ACV decides where the air is sent,depending on what the computor is telling it about the engine.The ACV can send the air to the front cat(s),the main cat (or both),to the exhaust ports or back to the air cleaner if no air to the exhaust system is needed.
This is all done to control smog effectively under all temps and conditions.It also helps to prevent overheating of the cats,due to the rotaries heavy polluting nature and in part,the tendency for American drivers to be stuck idling in traffic a lot. No airflow=no cat cooling....
Thread Starter
Joined: May 2005
Posts: 625
Likes: 0
From: Norfolk, VA
that was a joke boys... I keep pitchin em, you keep missin em. However whats not a joke is this: A guy takes his rx into the shop cause he's leaking oil and the mech. says I'll get right on it . come back in a half hour. So he goes and eats and icecream cone, getting it all over his face... Comes back and says: so, you figure out whats wrong yet? The mech says, I looks like you just blew a seal... and the guy says...
wait for it...
no this is just ice cream.
ps... so long story short. What we're saying here is that I gotta put my rats nest and acv back on to be able to pass snifter tests?
wait for it...
no this is just ice cream.
ps... so long story short. What we're saying here is that I gotta put my rats nest and acv back on to be able to pass snifter tests?
Joined: Oct 2005
Posts: 1,329
Likes: 8
From: SF Bay Area, California
yes. thats basically all of the emission system... make sure ur cats are good. they make the biggest difference. oh and i almost passed smog. i was passing but then i think my seafoam in my gas tank started combusting and started smoking so the smog tech had to abort the test.