Short stacks with the secondaries taken out is the only way to go. You have to get it mapped to feel the full benefit. It just seems like the power come on quicker. Thats my opinion anyway.
JP1143, did you find taking the secondaries out resulted in more off idle and midrange torque?
I did on a k7 750. It's not placebo or a non-linear torque curve making it feel more powerful IMO. Time to maximum power is noticeably shorter, that is I find myself having to shift through the gearbox much quicker when I give it WOT.
Is that why you are recommending the short stacks?
Is that why you are recommending the short stacks?
Yes, with the short stacks the bike felt stronger from mid-range to the upper end of the powerband. Bike also felt more responsive and quicker to power like you said with secondaries out. It didn't matter what size of dispalcement motor we were messing around with, every bike ran better with the secondaries out.
How much power will you lose with the shaft still in, maybe someone else knows exactly, my guess about 2hp? But you gain much more with the STV plates out. Some people don't like it though.
I've removed the shaft on mine and fabricated a small shaft from aluminium for coupling the STV motor to the STP sensor. I have two sets of throttle bodies, stock and modified and have AB'd them a few times.
Linear Mode
