Z31 Introduction
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The car has a basic tune in it, so the tuneup is not ideal. I'm gonna have the car dyno tuned to fine tune the timing and fuel to gain some power in all RPM ranges. Hopefully i can get another 50 horse out of it with timing and fuel adjustments and a little more boost.
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weshole;314797 wrote:
I cant imagine the drop off is that drastic that you wont still pull hard if you rev higher.Agreed. Holding the previous gear a little longer can help you get into your mid range power in the next gear. It may also be beneficial to adjust shift times in every gear.
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I have been thinking about this. I took a look at the rpm drop on each shift, and this is what i came up with:
gear 1-2....1700 rpm
gear 2-3....1100 rpm
gear 3-4....800 rpm
gear 4-5.... 500 rpm
This is a dyno sheet of the same setup in another z31. The only differance is im using e85 at 15 lbs of boost with 9:1 compression pistons and, he is using 93oct at 20 lbs of boost with 7.8:1 compression pistons.
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judging by that dyno graph, and given that your car makes the same power at the same rpms, shifting at 6200 is about perfect IMO. Why go past that when your power drops off, when you can shift and be right back in the power again?
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JN210;317765 wrote:
fun? why do they keep breaking?
Because the big doof can't drive.
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