ECU Flash vs Dyno Tune?

[Steven Moua]

Sorry if this is a repeat from my other forum, but I'd really like to get as many answers to this question.....

So I have the VF engineering supercharger with a couple of mods and the flash that came with it. I had a friend who basically told me I can flash all I want, but I still need to dyno tune it. What is the difference between having a company flash my ECU based on the parts that I have compared to having a company run it on the dyno? Is it more of an advantage to run it on a dyno and have them redo my map????

[jl-c]

A flash cannot take into account the variation of manufacturing specs. A flash is based on published specs. An example being, Porsche is always economical with its performance figures, many magazine tests have returned far better figures than quoted by Porsche! Nothing is made to zero tolerance these days. A dyno is "real time" and can take into account all the various differences, wear etc that may be cancelling each other out, or adding to an error. I would suggest add parts, flash, then dyno to 'fine tune 'it all.

[EleCTriCT]

i would contact VF and the possible dyno tuner on probability of being to modify the VF Flash etc. Or what kind of software the dyno guy can use instead.

Ive worked with VF flashed ecu's before and i remember it being a pain, i had to get the ipas codes from porsche so I could flash the ecu back to stock when i wanted to changhe something