Quote:
Originally Posted by rednoved
No pictures at all? You could have at least taken before and after pictures.
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well, i intended to do a full-scale write-up but my parents borrowed my camera for the week (went on a vacation on the Harley) so all i had was my camera phone. i didnt get any before shots, but i did get a few durings and after. i cannot seem to setup my alltel upload album so unfortunately, no pics for now
Quote:
Originally Posted by dirt bike dave
'Seat of the pants' aka 'butt dyno' readings are notoriously inaccurate.
Any change in power delivery or sound is perceived as 'more power' by the guy who spent the money and/or did the labor. Real changes should be verified using controlled experiments. Corrected dyno, 0-60 times, unbiased tester, etc...
As for a minor (5 hp?) gain, your actual peak power can vary that much or more with the change in the weather between breakfast and lunch. It is very difficult to measure changes that small with an instrument as unreliable as the butt dyno.
IMO, reducing air velocity through the intake by hogging it out is rarely a good idea, unless you are correcting a known deficiency.
Polishing a surface to increase airflow has been pretty thoroughly debunked over the years, specifically for intake ports. Pretty sure the same physics apply in the intake tract.
But hey, it's fun to work on your truck and learn on your own, so props for that!
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i wouldnt say reducing the air velocity. if you could see the difference in diameter of my CAI tube to the rubber o-ring to the TB, this helped reduce some of the turbulence that the various-sized openings caused. and while i agree with that and would love to dyno it, all i can say is that it didnt hurt the performance either, so either way, im proud of it. plus im moving to tally soon, so i might find a shop and do a few pulls and let you guys know
