[cupidstoy]

i agree, dyno results would be very useful. i think part of the problem is the cost and time it takes to do good dynos. you need a before and after each mod. you need other conditions to be the same (same gas, same temp and humidity, same tires, same everything except the one thing you changed and want to quantify) for alot of us, our trucks are daily drivers and it's not worth it to spend a couple of hundred bucks plus take days off work for two dyno sessions and keep all the other stuff the same.

another thing to consider is that one man's trash is another man's treasure. one person with a 4 speed tranny and a certain rear end gearing and tire setup might need a little different peak torque range then someone with a different setup. yes, the dyno graphs would be very useful here, but still not going to solve everyone's configuration problems. chip or no chip? different size pipes, different mufflers and headers, etc. vvti or non? 4 speed or 5 speed tranny? it would cost thousands to dyno all the options.

i agree we could use more graphs and "hard" info. but, i think the differences you are worried about are pretty minor. i would trust the seat of the pants advice from certain members and go with what works for them. or, strike out on your own and post your dyno results as they come in. when i get ready to chip, i'll post my before and after dyno and whatever else is avail.