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Old 09-07-2021, 11:38 PM   #16 (permalink)
Isaac Zachary
High Altitude Hybrid
 
Join Date: Dec 2020
Location: Gunnison, CO
Posts: 2,075

Avalon - '13 Toyota Avalon HV
90 day: 40.45 mpg (US)

Prius - '06 Toyota Prius
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Quote:
Originally Posted by cRiPpLe_rOoStEr View Post
Depending on the proportion of fuel enrichment, it won't harm performance, it may actually lead to some improvement. On a sidenote, replacing the so-called inert gas with a gaseous fuel is more likely to decrease NOx, as it will decrease the amount of free oxygen molecules to reach with the nitrogen. A richer AFR is usually more likely to result on lower NOx, regardless of how the supplemental fuel is delivered to the intake tract.
I think I wasn't clear. I meant replace EGR with a flow of propane and more air so it wouldn't enrich the air fuel mix, but rather keep it the same.
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