Weight dropping= how much time?

[jd dad]

Going through this with our EF at the minute. Ran at the last meeting as it goes on the street dead standard. This meeting will be with diff gears, extractors with no cat but still exhaust fitted first up. Then put on some ET Streets for a cpl of passes then disconnect exhaust for the rest of the day. Then next meeting will be stripped out of as much as we can take out of it and see how much difference each step makes, may even try and find some lighter rims if $$ permit as well