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Message: [QUOTE="Big Bore, post: 157287, member: 760"] I'll do my best lol. First of all, idle quality is simply that. I can live with a rough idle. My first set of tunes from my current tuner didn't idle well, but drive-ability improved night and day compared to the previous tunes from someone else. Couple dial ins and idle was fine. My tuner run's 200% nozzles and lives well above 4000ft and drives and tows over 10,000ft with them. He has mentioned some idle issues, but drive-ability is excellent. I'm not sure how much more extreme of conditions a person can get than what he has been doing with his so far. I've received quite an education from my tuner on just exactly how the tuning works and I'm satisfied that the bigger nozzles are better all the way around. He has the fuel pulled way back on the 250cc injectors to protect his PMR's, basically he is using a little more fuel than my 175cc injectors flow, but more efficiently with the larger nozzle. To put it in perspective, the 100% nozzles are half the size of a 200% nozzle that I already know can be tuned to run perfectly in my conditions, and I'm convinced that 100% nozzles would bring my egt's down a bit allowing me to run a little faster towing on the passes etc. I'm almost to the point of pulling the injectors and sending them in for new nozzles just to experiment while I'm building my new motor. In fact, I'm fairly certain a 200% nozzle would have even more advantage. Given that, my comments that I would never run a nozzle size smaller than 100% is fairly conservative. [/QUOTE]