Would that be random tech?

 

Armen, I have heard and smelled your car. Methinks you will not be simply breezing through Aircare.
As for Randoom tech cats I have personally seen less than stellar results with them.
The Walker 151 series work reasonably well although they have come up with better cats that at this point are unavailable.

One thing to note, just because your O2s look good on Datamaster at idle, that does not mean you are actually at the correct mixture.
Because of overlap you have free oxygen in the exhaust that the sensor looks at. The end result is the mixture ends up being rich at idle even though the PCM thinks it is doing a fine job.

Let me know if you are in the market for cats and I will get you prices on stuff I can get.
Regards, Gerry

 

Thanks Gerry, I will let you know when the time comes. As for aircare yes i'm thinking it will be more then a few trips to the rollers. To bad the only readings they give are emissions.

 

IMO anyone with a "large" cam needs to tune in closed loop for idle and emissions ... for the exact reason gerry mentioned . ur O2s are useless cuz they get fooled by the overlap ...

just turn those things off at idle, tune ur mixture in the open loop tables, slap some 315s on the back and go do the idle test (some places wont put it on the rollers with u have wide *** bling blings on the back) .. like i did with rickerby's car when i took it thru aircare

 

Yeah , the peasants have been using studded snows for the same purpose.
I assume you meant "open loop"?

 

Woulden't a larger cam with more overlap, i.e. 112 lsa, be worse for a idle test?

 

yah but u gonna have to pass the idle test ANYWAY .. so if u only do the idle test u only have to worry about tuning for one thing, aka the idle mixture ... and not worry about the rest of ur tune

 

This is true, although i'd like to get 2 year pass and it's defiantly worth a try or even many tries.