I have an AE82 Corolla twincam with a blue/black top 4age.

 

Engine mods are so far limited to a cold air intake feeding a pod filter and a straight through muffler on the rear.

 

These mods made a nice difference in engine response and power, but the car is running rich after the changes. I have spoken to a mechanic about this but was told to ignore it as the car cannot be retuned. Is this correct? I have been looking into aftermarket engine management, but that will be a while down the track so I am stuck with the factory issue for now.

I understand that I might use a bit more fuel after these mods, but loosing around 100km out of a tank seems a bit excessive.

 

Any ideas?

 

Jarrad

Hey mate what plugs you usin?

i would have thought that for cruising the car would go into closed loop mode and run off the o2 sensor readings, and trim the mixtures to stoich. is the o2 sensor working ok? was there an air temp sensor in the old airbox which is now disconnected? tested the ecu for error codes?

 

i have a nova/ae92, it is only a 4afe, but it has a temp sensor in the airbox.

I am running NGK iridium plugs in the car, they have only been in there for a few months so they should be right.

 

There were only some air lines running into the box, they have been connected to the filter. The pod has been on there for a while, it has only been a problem since the muffler went on which should have been mentioned before.

 

While cruising the car isnt as bad, its mainly when I put the foot down.

 

I will have to get it checked for fault codes, thanks for the tip...

While I am at it I will get the o2 sensor checked.

 

Thanks

This might be a NOOB answer but sounds logical. I wonder if you putting the high flow exhaust on it has made a reduction in the o2 sensor to test the exhaust gas properly? any ideas if this could be the case.

Hey i think i called that the wrong thing, i was talking about the sensor in the exhaust if you know what 1 I'm talking about please let me know.

This might be a NOOB answer but sounds logical. I wonder if you putting the high flow exhaust on it has made a reduction in the o2 sensor to test the exhaust gas properly? any ideas if this could be the case.

 

 

Yor right Trev, sounds logical.

I had the entire exhaust replaced for roadworthy and then after had the new muffler put on.

It was only when the muffler went on that the problems started. I don't really want to change the muffler again, but on the other hand I would like to get it running properly again...

I wonder if you can get a better exhaust gas meter (or wateva they are).

I wonder if you can get a better exhaust gas meter (or wateva they are).

 

Before jumping into anything I will get the fault codes checked. The process of elimination begins...

yes i just wanted to know if it was that how could you fix it without the exhaust, as i said its a bit of a noob answer :)