90 Turbo engine supposed to run LEANER???

[BlueShark]

I have a turbo engine from 90 in my 91 GSX. I just heard that these engines from 90 run leaner than rest of the 1g. I was told that
.88-.90 volts O2 reading @ WOT is normal and it would be pig rich if I see above .91-.92 volts.

Is this true?

 

[L2RTSiAWD]

Every car is different. All 1g's have the same injectors pump and fuel pressure. If that car like that volt range and is tuned well with egt below 900 C then your fine.

Later,

 

[2-0turbo]

I think this comes from the base fuel pressure setting on 1G cars. Every injector in the world is rated at 43 PSI. Base fuel pressure on 1G cars is 36 PSI. So, our 450 cc injectors are actually about 410's.

 

[BatmanGSX]

Bah...

90's have narrower fuel trims (meaning the range is smaller) than all other 1G DSMs. As for why that would cause lower O2 voltages... I really have no clue. I ignore O2 voltages anyway.