Quote:
Originally Posted by Endgame
But if we have datalogged our normal driving and sprited runs, such as is requried with Uprev, would that not suffice for minor mods?
I would think it more critical to have a turbo car actually on the dyno that a simple bolt on mod NA car.
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The problem is, we as tuners can't see the effects of our changes in real time. Say you send us a data log, and it shows you are way rich in the mid range, and some fuel needs to be taken out at those rpm cells. Sure, I can make an informed guess and get it close, but there is a chance it won't be perfect the first time.
Then you get into ignition timing, which is a whole other ball game. You cannot tune timing based on a data log without real time feedback from the dyno. Camshaft timing is the same way, the tuner needs to see if his changes are making a positive change or not, based on dyno feedback.