Rich Rohrich said:Do you guys honestly believe that the backfire screen is eating some massive amount of horsepower? I know it's probably crazy to ask this but have any of you actually bothered to TEST in some reasonably controlled fashion the difference with and without the screen ?
lavaman said:Hey J.B. 426, Whaddaya mean by, "the filter screen will just snap out" ? Can ya explain it? TIA....
Rich Rohrich said:Do you guys honestly believe that the backfire screen is eating some massive amount of horsepower? I know it's probably crazy to ask this but have any of you actually bothered to TEST in some reasonably controlled fashion the difference with and without the screen ?
E-Ticket said:The first time we took off the air filter off of the wife's 250x --- my first thought on seeing the bf screen was, "...holy crap... how does *any* air get through that..!?" :ohmy:
Rich Rohrich said:That's what I thought when I got my first YZ400F in 1998. First thing I did was pull the head, carb and subframe off and connect them to the flow bench. After numerous tests with various combinations what was the final conclusion? Wellll, even in it's current 14:1 compression 444cc, 52+ horsepower state my YZF still has the screen and so does my CRF450. Feel free to draw your own conclusions. :cool:
E-Ticket said:our's will most likely stay in place because it's the wife's bike and I *don't* want her to have any *more* power just yet. :laugh:
E-Ticket said:The first time we took off the air filter off of the wife's 250x --- my first thought on seeing the bf screen was, "...holy crap... how does *any* air get through that..!?" :ohmy:
The filter/air box door clearance is a real PITA.....
srellis said:I honestly think we are living in a parallel universe!!! Way too scary!!! :eek:
Rich Rohrich said:Do you guys honestly believe that the backfire screen is eating some massive amount of horsepower? I know it's probably crazy to ask this but have any of you actually bothered to TEST in some reasonably controlled fashion the difference with and without the screen ?
PAULRY said:I have not done any tests with the screen removed, but just looking at the screen, I would say there has to be an increase in the flow of air with the screen removed.