[DMCForum] de-emissioning

[Marc Levy <malevy_nj@xxxxxxxxx>]

And your reason for doing this was........?



--- content22207 <brobertson@xxxxxxxxxxxx> wrote:

> Only removed EGR, smog pump, and the thermactor bank
> (and the vacuum
> canister associated with the thermactor bank). EGR's
> supposed to help
> with fuel economy, but I oppose making an engine
> breathe its own
> exhaust on principle if nothing else. This
> particular EGR sent signals
> back to the engine management computer, so without
> its rheostat the
> computer thought it was wide open and leaned my
> mixture out too much
> (the joys of EFI screwing around with mixture). I
> tied the rheostat
> lines together so now the computer thinks EGR is
> closed all the time
> -- considering it has a pipe plug in its port, it
> essentially is
> closed all the time. I figure the O2 sensor can deal
> with any
> enrichment issues that may cause. Smog pump has
> absolutely no effect
> on an engine (is piped into the exhaust side) other
> that drag. Its
> plumbing however was all in my way (couldn't reach
> the passenger side
> spark plugs). Without the smog pump, there's no need
> for the
> thermactors. Without the thermactors, there's no
> need for their vacuum
> canister. Without the vacuum canister, there's no
> need for those silly
> hard plastic vacuum lines (remaining vacuum lines
> have been replaced
> with fuel line hose).
> 
> Plugs look good and fuel economy is comparable to a
> 2 barrel (15-16
> MPG), so I consider the de-emissioning a success.
> This was the first
> time I ever de-emissioned an engine with computer
> controlled ignition
> & fuel delivery so I wasn't sure how it would turn
> out. 


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