Mass air Conversion question

[bison]

Hi everybody. This is my 1st post. I have acquired a Georgia 88 GT (im in CA) that was originally SD but was converted to mass air. Now the thing is, it has no 02 sensors. Doesnt a MA car need 02 sensors to run properly? The car runs and drives fine, no wandering idle, rich/lean issues, etc. How is this possible?

 

[Noobz347]

In most cases it will work however... it either A) consumes a lot of gas or B)doesn't perform as well as it could since you're running in in closed loop, "limp mode" all the time.

Is your EEC chipped?

 

[Mustang5L5]

To answer your question, it should have a pair of o2 sensors on the mid pipe right after the header collectors.

Why yours doesn't? Well we need more info for that. What mods? what exhaust? are there o2 bungs? is the car tuned? Does it run well? Did the PO just think disconnect them thinking (falsly) it would give more power?

 

[bison]

Thanks everyone for the quick reply. l bought the car used and the owner has no idea whatsoever. What l have discovered on my own upon partial tear down is, it has shorty headers, Bassani xpipe, GT40 heads (possible GT40 crate engine, will know more once have heads off) E or possibly B cam, Crane RR and l believe thats about it. l have the shorties off and looking inside them and the exhaust ports, it actually looks like it was running lean. It had plugs in the 02 sensor holes in the Xpipe. Im just putting this car back to stock to sell it so it doesnt behoove me to dump more $$ into this project than needed. It can run in closed loop and funtion properly, just not as effciently as it otherwise could be, is this about correct?

 

[Mustang5L5]

It can run in closed loop and funtion properly, just not as effciently as it otherwise could be, is this about correct?

it'll run...just not to max efficiency

 

[bison]

Thank you sir! You have been a great help

 

[HISSIN50]

FWIW, in case you search for more info, without O2's, you're running on open loop, not closed loop.