Just wondering if anyone can shed some light on this issue. I found a gas station that sells 92octane and I've filled my EVO with it about 3-4 times but was using 91 when I first got the car. I will be going to WORKS this morning possibly getting the reflash done. My question is, which map should I go with using the 92 octane? A 93 map or the 91 map? I still have the 92 in my tank at the moment, should I empty my tank first and fill with 91 before going to WORKS? I am also wondering about future upgrades such as downpipe/exhaust, intake, boost controller, and bov. Would this parts work with the reflash without addition ECU tuning? PLEASE HELP, I DO NOT WANT TO MAKE THE WRONG CHOICE HERE. Thanks!

 

You would be best off with the 91 octane program. This way, you can buy gas at more than one station (92 is hard to come by here in CA), and even so, 92 is a little low to run on a regular basis with our 93 octane program. That said, having the 92 in your tank now certainly isn't going to hurt anything, and will just provide a little extra octane beyond what the 91 program requires.

WORKS will soon offer additional exhaust and intake upgrades and you will, of course, be entitled to a free reflash should you later come back for any of those items.

See you in a couple hours!

-- DavidV

 

Thanks Dave, see you in a couple of hours.