my 99 does not have a EGR and does have a BCM and it has the smaller starter and the high imp injectors. now mine was built in 3/99. i have a 2001 ECU that i should swap in.
Now did you switch to 2 wire O2 sensor? if so did you change the factory wiring harness?
I believe the knock sensor was not changed after EGR was removed but could be wrong.
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72 442 "THE BEAST", 99 Alero - OSV Replica w/ original OSV parts, HURST Dual/Gate Shifter
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