ABSURDflow/TSE Time Attack Miata v.2010 upgrades
04-12-2010, 01:03 PM
#83
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Here's the chart from the first time I tuned the motor - the purple curve is my '99 motor, the blue curve is the 2002 motor with VVT unplugged and a little less boost (12psi vs 14psi)
I have it set at full retard from 5000rpm up. Full advance at 3000rpm, smooth changeover from 3k to 5k. As far as tuning it, I stole y8s' curve numbers, plugged them in, and did not make any changes to them. I ran through my fuel map from 2500rpm to 4500rpm, adjusted the AFRs, and that's the result I got. I'm sure with some tweaking on the actual VVT targets there are more gains to be had but that's going to be a long, expensive dyno session.
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04-13-2010, 01:24 AM
#94
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What would you do to the numbers to get the accurate torque if you did a run in 3rd?
Last edited by ThePass; 04-13-2010 at 01:35 AM.
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04-13-2010, 02:06 AM
#95
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Jason, the car is really flashy and doing WOT pulls on the street is begging to get pulled over. I think I've driven it about 10-20 miles in the last year on the road.
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04-13-2010, 11:12 AM
#96
Sav, did you just have to cut the Blox flange off and weld the Miata flange on, was the spacing dead on or did you have to shorten/lengthen the runners?
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04-14-2010, 03:24 AM
#97
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I cut the Blox flange on, cut the Miata flange, and they were close. I was then an idiot and cut too much off the B18 manifold, trying to get rid of all of the fuel injector bosses, and ended up having to do a lot of port work to line everything up again. The spacing isn't dead nuts, but it's damn close.
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04-14-2010, 09:25 AM
#98
I cut the Blox flange on, cut the Miata flange, and they were close. I was then an idiot and cut too much off the B18 manifold, trying to get rid of all of the fuel injector bosses, and ended up having to do a lot of port work to line everything up again. The spacing isn't dead nuts, but it's damn close.
So how long are the runners now? Seems like you got it perfect according to your dyno.
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04-14-2010, 01:47 PM
#100
Am I missing something in this build?
Sav’s car according to that thread: 2871 with peak hp at 294 and peak torque at 248 at 14 psi. He’s also running on 100 octane fuel.
Comparison - Paul’s Machine: 300 peak hp/ 242 torque at 14.5 psi on a 2560 and on pump 93 octane gas.
Sav’s got a 99 bottom end with the 02 head with vvt working and the new honda IM. Paul’s got a whole 99 engine with the begi IM.
Shouldn’t Sav be making MORE power with the larger turbo?
Sav’s car according to that thread: 2871 with peak hp at 294 and peak torque at 248 at 14 psi. He’s also running on 100 octane fuel.
Comparison - Paul’s Machine: 300 peak hp/ 242 torque at 14.5 psi on a 2560 and on pump 93 octane gas.
Sav’s got a 99 bottom end with the 02 head with vvt working and the new honda IM. Paul’s got a whole 99 engine with the begi IM.
Shouldn’t Sav be making MORE power with the larger turbo?
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