Slowest turbo Miata ever
#383
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Ohio is only 65mph, so i was doing mostly 60-65mph. But i did have a passenger. Windows and top up.
Last year i did 36mpg.
I don't dare say what injectors i use and praise them on this forum, or i'll get chewed out (again).
The 16g setup i just built and tuned did 35mpg on a recent trip. That was with some used rx7 injectors and MS.
Last year i did 36mpg.
I don't dare say what injectors i use and praise them on this forum, or i'll get chewed out (again).
The 16g setup i just built and tuned did 35mpg on a recent trip. That was with some used rx7 injectors and MS.
#384
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Location: Taos, New mexico
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Ohio is only 65mph, so i was doing mostly 60-65mph. But i did have a passenger. Windows and top up.
Last year i did 36mpg.
I don't dare say what injectors i use and praise them on this forum, or i'll get chewed out (again).
The 16g setup i just built and tuned did 35mpg on a recent trip. That was with some used rx7 injectors and MS.
Last year i did 36mpg.
I don't dare say what injectors i use and praise them on this forum, or i'll get chewed out (again).
The 16g setup i just built and tuned did 35mpg on a recent trip. That was with some used rx7 injectors and MS.
#387
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15psi
I think i'm blowing out spark. I'm getting split second losses of power when i do a pull.
I also think i may be running on the limit of the fuel pump, can't say for sure.
Getting some pretty nice wheelspin in second now. Needs more fuel added in the higher cells, i saw 13.0:1 at one point during a pull.
MBC is so wacky in this cooler temperature 45F, so that was messing with things. Probably going to back it down a notch for Saturday as it's going to be cool. If i keep blowing out spark i'll have to set it back at 12.
I think i'm blowing out spark. I'm getting split second losses of power when i do a pull.
I also think i may be running on the limit of the fuel pump, can't say for sure.
Getting some pretty nice wheelspin in second now. Needs more fuel added in the higher cells, i saw 13.0:1 at one point during a pull.
MBC is so wacky in this cooler temperature 45F, so that was messing with things. Probably going to back it down a notch for Saturday as it's going to be cool. If i keep blowing out spark i'll have to set it back at 12.
#388
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iTrader: (13)
Join Date: Dec 2006
Location: Taos, New mexico
Posts: 6,613
Total Cats: 567
15psi
I think i'm blowing out spark. I'm getting split second losses of power when i do a pull.
I also think i may be running on the limit of the fuel pump, can't say for sure.
Getting some pretty nice wheelspin in second now. Needs more fuel added in the higher cells, i saw 13.0:1 at one point during a pull.
MBC is so wacky in this cooler temperature 45F, so that was messing with things. Probably going to back it down a notch for Saturday as it's going to be cool. If i keep blowing out spark i'll have to set it back at 12.
I think i'm blowing out spark. I'm getting split second losses of power when i do a pull.
I also think i may be running on the limit of the fuel pump, can't say for sure.
Getting some pretty nice wheelspin in second now. Needs more fuel added in the higher cells, i saw 13.0:1 at one point during a pull.
MBC is so wacky in this cooler temperature 45F, so that was messing with things. Probably going to back it down a notch for Saturday as it's going to be cool. If i keep blowing out spark i'll have to set it back at 12.
Also, my stock 90 ignition started failling on my anything above 12psi. COP conversion and I've had no issues at 15+ on my old setup, and the new setup has only seen 10 or so because this tiny turbo hates boost.
#389
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Another thing i just remembered. I had the plug gap closed down to .025 or something pretty low on the last engine. I'm not sure where the builder gaped these plugs to. Could be worth it to look into and maybe close the gap down a bit. That may fix the issue, for now anyway.
#392
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Brian (dem) was texting me earlier. He's pretty much got me almost convinced on using the setup he did. (Edit* the setup that everyone was skeptical of, but seems to work)
Because i build things to be way more than capable than they ever need to be, i'm probably going to do that.
But because winter is coming i have quite some time to make my decision. I have this fuel pump i need to figure out how to install as well.
Because i build things to be way more than capable than they ever need to be, i'm probably going to do that.
But because winter is coming i have quite some time to make my decision. I have this fuel pump i need to figure out how to install as well.
#397
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Hah, awesome!
So after actually looking at my tune, i realized that i'm now running off the top of my map... So i'll be turning it down for the dyno tomorrow.
May run map switching, or just build a new map. Later.
So after actually looking at my tune, i realized that i'm now running off the top of my map... So i'll be turning it down for the dyno tomorrow.
May run map switching, or just build a new map. Later.
#400
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So the car produced today. I know what you want to see, so here it is.
Did 3 pulls, no cool down(didn't matter). First pull made 250, added 5* of timing everywhere above 100kpa for the 2nd and 3rd pull. 3rd pull i told the operator to take it to 7500, but it only went to 7300. Oh well. This is with what i would say is a shitty erat-tune. I think better VE map, with more timing this thing could pull down 275hp at the same boost level. Boost did creep from about 10psi to 13psi. It was cold out.
I must say, it's a riot. It just wants to spin higher and higher, more and more. I should have video in a few days and i'll see if i cant rip this datalog. My laptop is being a pain. Also, i'm interested to see what was going on in the top of the plot there. It started to get a little erratic.
Edit* Datalog attached. Now that i'm looking at it, i never noticed how much the AFR's sucked during the pull... Holy hell that's bad. This is why you dyno tune your car, i never saw that on the street once. It would also explain the weird bump in torque there around 3000rpm.
Last edited by Erat; 10-26-2013 at 04:07 PM.