
Originally Posted by
rogson
Dynojet kits often recommend drilling the air-transfer hole in the slides. This speeds the response of the slide to throttle changes and hence improves the throttle response.
Factorypro kits don't recommend this but often include lighter slide springs in their kits in an effort to do the same thing.
IMO Factorypro's approach is simply a marketing ploy to differentiate their products since firstly they are Johnny-come-latelys compared with Dynojet and secondly they know some owners will be reluctant to take to their slides (which are not cheap) with a drill.
My recommendation is - if you want to improve throttle response (and who doesn't?), then drill the slides.
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