every time i rev it in park it backfires and ties when i drive it over 40 miles .
do i need to ajust my timing afer a put in 17 pound injectors in my 2.8 camaro with mass air sensor.
Ummmm.....yes, that would be a good place to start.
you are putting in more fuel so you are going to have a longer burn time retard timing deffinatly.
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