Our commitment to you is to keep tuning until its perfect Not just via mapping but by offering you only the best products to work with that tune as well. Probably not worth the risk for a potential ½ mpg improvement on the highway. We offer an experience that puts you in the drivers seat, and we bring experienced tuners that makes the driver seat alot more enjoyable. But that could lead to MAJOR engine problems if the A/F ratio gets too lean. Of course any Etuner can lean-out the A/F ratio under light throttle for better fuel economy. But if that only happens when floored, who cares? If the A/F ratio remains unchanged under light throttle highway driving, it seems to me that highway fuel economy should remain the same as the baseline tune, which again could be slightly better than stock. What exactly does an Etune do? If it increases power by making the air-fuel ratio richer, that should decrease fuel economy compared to the baseline tune. Problem with iTunes is that it sometimes hogs the CPU from other programs, causing stalls and stuttering, even in top-of-the-line machines. On his website, the e-tuning tab shows the message: 'We are not currently accepting any new customers for our eTuning service. After viewing some forums, I found that Vit is the best there is. But the car feels amazing and we're not even halfway done. I'm actually reallllllyy curious to know what kinda numbers im currently doing. Slightly better fuel economy does not offset the more expensive premium fuel. Priority dictates which program gets the most time off the CPU, so while a higher-priority program runs a lower-priority program is on hold, and equal programs share the CPU to the best of their coding. No more VitViper e-tunes Hey all, I am looking to add a few parts to my 13 Si and need to have a custom tune done. Hey fellas, so it seems that amongst the tons of posts i tried to scour, not many have actually posted reviews of their R18 with Bolt-Ons and their VitViper tune. If my fuel economy increased by 3% but my cost of fuel increased by 13%, my total fuel cost still increased by 10%. However, it comes at the expense of premium fuel. By advancing the timing, Ktune made the engine more efficient and therefore requires less fuel to accomplish the same amount of work – better fuel mileage. That in turn requires premium fuel to avoid pinging. That makes sense because the Ktune primarily advanced the ignition timing to allow for more power. I have a Ktune only and have seen perhaps a very slight increase in fuel economy. NVICSetPriority () ), the implemented priority levels may be used as-is, for the CMSIS API accounts for the actual number of implemented interrupt levels for the chosen device (i.e., it shifts the desired value into the appropriate position of the priority register).
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