No poison at all for me.
I replaced my factory power window regulators and motors s a few years ago with the upgraded replacements from A1:
https://www.a1electric.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=AEOS&Product_Code=GM19-K
They are fast and I'm using original switches and wiring without relays.
The only reason I'm asking here is out of interest.
Both windows are equally fast. Cannot detect a difference.
Must be more efficient motors.
It would be interesting to compare the speed of mine with your stock setup with relays installed. When you installed your relays, did you also run a fatter gauge wire all the way to the motors? If I were going to run relays I would definitely run 12ga and run it from pin 87 directly to the battery and 12Ga from pin 30 all the way to the motors.
I can't time mine right now either because in the middle of a paint job on the car.
The windows are out and the doors off the body. Will probably be about 2 months before I can do it.
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