Fellas, I have read where people bypass the heater/coolant diverter, as well as some smog pump hoses. but i didn't see any definative answers, so here's the questions i have:
1. Can I simply run the coolant line from the tpi to my heater core and back to the radiator? (Pretty sure this is fine, just want to verify)(I also know it affects AC by heating the air, i am fine with that)
2. Removing the air diverter seems a bit more fuzzy. I read where someone ran a line from the smog pump to the cat and plugged the header holes and removed the air rails from the car completely. This is what I'd like to do, but not sure how big of an impact there is on emissions. And how do you get rid of the air diverter if the smog pump has a gozinta and gozouta. Seems to me if you run a line from the pump to the cat, that's only one line, so the smog pump would need to have the second line go somewhere?
305tpi engine.

 

Part 1) Yes.

Part 2) not sure.

 

I didnt see an answer to the below that someone posted. Anyone know if this would work? get rid of the air rales on the headers and get rid of the diverter and run the line directly to the cat?

 

A little musing; a water pump, pumps water,a fuel pump, pumps fuel, a smog pump doesn't pump smog.

The air pump gozinta is air (surprised?), this air is pumped to the gozouta to the diverter valve where it's diverted to exhaust ports, Cat, or atmosphere. If you disconnect the exhaust side, leave its port on the diverter valve open (just remove the hose.)
If the Cat could handle air from the pump 100% of the time then the system wouldn't need to divert to atmosphere.
If emissions is not a concern then trash it all that includes the cat.

 

If emissions was completely a non-issue, I guess i could trash it all, that's not exactly the case though...
If the air diverter only uses the header connections during warmup is what I read, is it safe to say that emissions/air would act normal once the car is operating temp.? The diverter is in the way, as is the coolant diverter. The coolant isn't a problem. Where I live, i rarely need AC and can live with it not being as cold as can be. I would really like to clean things up by gettin rid of the rails on the header, and going directly to cat from the smog pump. If the header tubes are only used while the vehicle is warming up as someone stated, then it seems it would pass emissions once its warmed up if i removed the header portion. So that is the real question now. The heater Q has been answered. Thanks btw

 

Good, as long you're not required to pass a visual inspection.
Let us know if you pass, or not, and post a scan of the report if you don't mind.

 

I know you are begging, but still no answer. I might be able to help a little. Where I come from, emissions testing is a tailpipe sniffer at operating temperature. If this is your case, removing the A.I.R. system will have no affect on the test since it only operates during warmup. If your testing includes visual inspection of equipment, or a computer scan, removal will result in a fail. As far a how to hook up the diverter to supply air to the cat only, I'm not sure. My guess is that the cat can only take air when in closed loop. Makes sense, since extra air during rich warmup would likely burn the cat.

 

This is the description of valve operation.

 

Should be Ok to remove air to exhaust ports.
Additional Info:
When engine is cold ("Open Loop''), the port solenoid is energized and air pump pressure opens the passage to the exhaust ports. During normal operation ("Closed Loop''), the port solenoid is de-energized, the converter solenoid is energized, and air pump pressure opens the passage to the catalytic converter. When the ECM determines that air divert is necessary, both solenoids are de-energized and air pump output is diverted to the air cleaner through a divert/relief valve. The divert/relief valve limits system pressure.
Air is diverted to the atmosphere under the following conditions:

• Rich operation.
• When the ECM recognizes a problem and sets the "Service Engine Soon Light.
• During deceleration
• During high rpm operation when air pressure is greater than the setting for the internal relief valve.

 

Not begging, a lot of people start an interesting thread (at least for me) then never post the fix/mods or results of tests. Which is why many say they searched, but couldn't find an answer to their question.
Mine is OBD1 and is emissions sniffer tested as well. I would say all OBD1, but I always get contradicted when I generalize.

 

So from reading the replies (thanks a ton btw for the replies, good stuff), it sounds like I can remove the exhaust port portion, but need to keep the diverter hooked up and not going straight from pump to cat because of this "both solenoids are de-energized and air pump output is diverted to the air cleaner through a divert/relief valve. The divert/relief valve limits system pressure."
I don't remember seeing anything going to my air cleaner, but I am at work right now and can't look.

 

The air filter is at the diverter - little can below it.

 

Ahhh, ok

So as far as pressure relief, it would seem that only applies if you HAVE the diverter still there for atmosphere. If you go straight from pump to cat, I don't see how there would be a pressure problem. Maybe i am missing something though.
exhaust - cat - atmosphere = need diverter
cat - atmosphere = need diverter
cat = no diverter
So to not have the service engine light come on at normal temp, the ecm must be looking for a signal pulled high, low, or a resistance value. Maybe I'll try and figure out which it is looking for under normal operating temp when the flow should be going to cat. Although, If during deceleration the ecm is looking for something other than cat, then it would seem impossible to fake the ecm into thinking all is good.