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Originally Posted by mx5
Btw, you guys with NB Miatas, when calculating the percentage of water you're running, do you correct your calculations for the different fuel system you're running? I mean i.e. 240 cc/min fuel injector flows 240cc/min in NA Miata, but not in NB one
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I was directed to a long thread at miata.net that discussed the different flow rates between the NA and the NB miatas. I did correct for it. From what I recall, I think Robbie is right. The stock injectors flow 270cc/min on the NB miatas; 240cc/min on the NA's.
When I refigured, I switched to the .5mm water jet. Car runs fine.
I have to take out about 2* from the stock timing with water; about 4* without water. This is on 91 octane.