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While thanking you for taking the time to add to this thread I regret that you do not believe in Jesus.
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Why think negative ?
I didn't read him saying he didn't,..... most do in their own way. Some always think negative. I'll just think positive on that one

Getting back to the carb mods etc, it reminds me in Ca back in the 70's, when some older cars had to be modified to pass the current smog specs, this included retarding the timing below factory specs, and completely disconnecting the vacum advance, all to get them to pass the hydrocarbon test at idle and low speed only. Some would not even run (idle) that way, so instead of installing the "smog kit",  the smog inspectors would just hand the customer the kit still in the package just to satisfy the law. Other smog stations would tell you right up front that the car (whatever) now runs terrible, and would show you what to do as soon as you got home,....which included connecting the vacum advance, and advancing the timing. I can remember picking up a dodge van from the smog station one time, and upon any acceleration it backfired thru the carb all the way home. I call ed the shop, they told me their hands were tied, then told me what to do to fix it.
They later realized that while they were reducing HCs at idle speed, it was really poluting more than ever at hiway speeds. That when stuff changed, and the dyno testing came in,......a whole nother story !

Moral of the story, just because the epa wants it that way, that don't mean its right !