street tuning and dyno tuning

whats the difference between them, other than one is on a dyno and one is on the street, tuning wise. if 2 cars both had wide band o2 sensors and stand alone ecu's would they both run the same if u dynoed tuned 1 and street tuned the other. street tuning obviously wouldn't give you hp #'s but other then that whats the difference between both?

Your last sentence is your answer. How would you know if you're tuning the car to it's fullest potential without having some numbers to look at while you're doing it. Plus on a dyno you can give the car a more consistant throttle, where with street tuning you're more than likely going to have to start and stop all the time. And dyno tuning will show you the changes or things you do to the car. You'll be able to see how timing, a/f, cam timing, different psi gains; all effect your powerband.

with a wideband and datalogging, you can get your afr right on by street tunign, and also on the dyno. the only real difference is the timing. you can find mbtt on the dyno but you cant find it on the street. so you would have to pull plugs all the time to check for detonation, which you should do anyways on a dyno just to make sure you not detonating before mbtt.

if i was street tuning and didnt have access to a dyno, i would retard my timing .75 degrees per psi (b series 81mm bore) and just leave it at that

If it's a dynojet, I don't like dyno tuning. They don't put the same load on your motor as it sees on the street, so it isn't as accurate. A dynapack or a mustang dyno is awesome for tuning, without worrying about speeding tickets, or ripping through the cells so quick because of wheelspin that you don't really get good data from datalogging.

his thing is mroe of a how to make a basemap, not so much as why you do what you do. i mean anyone can make a basemap but not everyone can figure out how much fuel or timing to give or take away

its a good place to start. fine tuning whether it be on the street or dyno comes afterwards. after learning the basics of basemaps and basic tuning, the questions of fine tuning will fall in place.................or maybe thats just how i did it?

i mean he can learn how to make a basemap but without knowing why hes making changes. i mean learning how to tune, i spent countless hours reading up on site and learning what everything did and why you are doing them