WTF happened
#21
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1) Every person will be different. There is no possible way that you can make an exact statement for how much power gain is necessary for each and every human to notice. Just as some people are more sensitive towars noticing details, some will also be more sensitive in acceleration changes. There might be a general range, but not an exact minimum.
2) Even if you could make a reasonable general estimate for all people, I don't think this could be assigned a percentage value. On a 150hp engine, 8% = 12hp. On a 600hp engine, 8% = 48hp. That's a big difference. Furthermore, the weight of the vehicle in question will also affect what is "noticeable". On a very heavy vehicle (say, a 4x4 truck), 20hp isn't going to do much. But think about what 20hp will do to a motorcycle.
#22
Internet Mechanic
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This has been the opinion of multiple dyno operators, some in biz, some no longer. If anyone wants contact info, i can provide.
People can argue "feel" all they like, and actually percentages. What I am stabbing at is there is a threshold that universally accepted and what it has to do is a over increase in power.
You need to take it in relation to what your dealing with. In a vaccume i.e. a perfect world we could probably find the exact figure but if you take a given driver and mod a car completely w/o their knowledge and see if they notice anything I am willing to wage that increase needed is some where in the 8-10% range.
Nobody needs to subscribe to my logic but no one can argue that it be a intriguing experiment if we could get enough examples together.
People can argue "feel" all they like, and actually percentages. What I am stabbing at is there is a threshold that universally accepted and what it has to do is a over increase in power.
You need to take it in relation to what your dealing with. In a vaccume i.e. a perfect world we could probably find the exact figure but if you take a given driver and mod a car completely w/o their knowledge and see if they notice anything I am willing to wage that increase needed is some where in the 8-10% range.
Nobody needs to subscribe to my logic but no one can argue that it be a intriguing experiment if we could get enough examples together.
Last edited by BlackScreaminMachine; 03-22-2011 at 06:24 AM.