Originally Posted by vqholic@Korea

Yesterday my mechanic told me that stock mafs are enough for the figures below the 1 bar boost.
The next best thing to do in a situation where ecutek is not available is after all uprev.
Ecutek, of course, is the best tool in the world.
However, depending on the tuner's skills, if the tool is not used properly, it is meaningless. The situation in the Korea. is very much. worst condition. (Fuel and Information about boost Z), and no e85. The easiest way to buy kits in Korea was sohomotorsports. (Payment, Delivery)

My friend is riding a2a z in Georgia.(royalty performance)
He is 800whp over, adjusted uprev by Jon of z1 and has no problem so far. He is using stock mafs, too.