|
Heck we made lean burn modifications to the Datsun (pre Nissan) 280 Z beginning in 1975, first year of FI. In 75-76 Federal Z cars they had no cat, no egr, and that was emissions legal in 49 states. The FI cleaned up the engine.
You could increase the spring tension in the flap air flow meter, which made the engine run lean, then put a rheostat in the coolant temp circuit. With the rheostat mounted just above the console you could change the mixture just by rotating the knob on the rheostat.
Then we found out that it was a $2500 fine for violating emissions laws, so we just told the customers how to do it themselves, which was legal for them to do but not for us.
regards
Mech
|