I am going to install a set of Camshafts, o2 Housing, Tubular Header, Fuel Pump, MBC, and re-install my HKS RS Reloaded onto my evo.
I have never had a tune or flash before.
I ordered a tactrix cable and downloaded all of the software to my laptop.
Do I do the logging before or after I install?
Can anyone please help me in the steps to do this in?

Thanks.

Jonathan.
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do the installs then do the logging and send the data to whoever is doing your e-tuning. you need to send them data of how the car runs with the mods you plan on getting it tuned for.

 

i would go ahead and email a copy of your rom image to a tuner (inlude all of the parts you have and are going to install and gas octane you run). while waiting on the tuned rom image install all the parts (some of these tuners are quick, i recieved mine back in 4 hours). download the new tune to your ecu. make a couple 3rd gear wot logs and send them to your tuner to see if he/she needs to make any changes.

 

I'd log it before and after. That way you can compare the data-logs between stock and modified.