Originally posted by MeanGreenGSX
ah yes i agree you can tune down 50%, the biggest a dsm can handle with a afc are 660's, with rx7's this may be differnent. A well known dsm specailty site has confirmed this to be true. I think it was road race engineering. Anything larger than 660s cant be tuned down enough with our cars.
Ok, I misunderstood what you wrote. I thought you were saying that the AFC could only tune 660's down enough. Why is it that you can only use 660's?
Originally posted by Heat
I remember reading something about this. For example, tuning 1100cc injectors down 50% will not make them act like 550s.
If I cared enough about it I'd go search on dsmtalk but I'll stick with some 650cc disc/ball style injectors for $250 that PWR VTEC is gonna tell us how to get.
Well, they don't act EXACTLY like 550cc injectors. The 550cc's will be at a higher duty cycle to support a given amount than the 1100cc's will be. So, to supply a given amount of fuel, the 550's will be working harder than the 1100's. The 550's will be smoother when they come on also because not as much fuel's being dumped into the stream at once because 1100's spray more fuel but have a shorter pulse duration.