Stangas

I am putting a twin system onto an 88 F-150 5.0L efi.. Only problem is that there is only a single O2 sensor.

Do i just put the sensor into the left bank of the extractors? Will this give a correct reading for the efi computer?

If flow not sufficient, then i may have to put a cross piece into the exhaust.

It is being done on thursday so i need to know soon

Cheers

9psi EB

Off one bank will be fine, just keep it close to the stock location as possible in the new system - It only reads the overall mixture, so the readings off either bank will be the same.

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redGhia

one will do but 2 would be preferred so it can analyze both banks, but im not sure how u would set this up if it hasnt got it as standard,

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Maruaman

I may be stating the obvious but you really have no choice but to go with only one bank's extractor set - the tradeoff is that if a problem develops in the opposite bank then your ECU will not recognise the fault and potential for damage will be present i.e. burnt valves from a leaning off due to vacuum leak. What you will need to do is intensify your maintenance programme or have a sensor in each bank's extractor and change the wiring over periodically - which I believe could be a hassle free and potential disaster preventing quick fix.

silicon

This is the respone I recieved in relation to mounting a O2 sensor on tri-y's on a 351c. Either way you end up with a trade off.

"I would mount the sensor in a position as close to the engine where there is an accumulation of exhaust gases, the collector of the tri-y is fine, but the balance pipe is to far away. The further away the sensor, the longer it will take to get hot, and the longer it will take to respond to a changing fuel mixture. "