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#1481
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I have ran >25psi before without issues. So I think its a malfunction.
Things I've changed since then were clutch, headgasket and spark plugs. Same plugs as before - NGK-4091 resistorless plugs, 7 heat range. I don't remember what gap I ran before but it was more than 0.030. Right now I'm at 0.035 and I will gap that down.
Possibilities?
Dying coils
Wiring gone bad somewhere
Plug wires got old
Anti-seize messing with plugs (first time I ever put it)
Things I've changed since then were clutch, headgasket and spark plugs. Same plugs as before - NGK-4091 resistorless plugs, 7 heat range. I don't remember what gap I ran before but it was more than 0.030. Right now I'm at 0.035 and I will gap that down.
Possibilities?
Dying coils
Wiring gone bad somewhere
Plug wires got old
Anti-seize messing with plugs (first time I ever put it)
#1482
I would have thought the VICS manifold to have better bottom end. I assume you WERE actuating it, correct? As you said, it's hard to get a feel for it when you have a malfunction. You can never had a gap too small! It'd have been a good emergency mod to make for the test? (how do you tell? Stuttering and high AFRs?)
Huh, I didn't know about the toyos blowing out at relatively low boost. I'm just starting to flirt with 20 psi myself. There are some better toyos than others.... Does anyone have a link to the info?
Huh, I didn't know about the toyos blowing out at relatively low boost. I'm just starting to flirt with 20 psi myself. There are some better toyos than others.... Does anyone have a link to the info?
#1485
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I do want to re-test it later and do it right.
But with much lower frequency, like 1/10 compared to that video. The car doesn't jerk, AFRs stay solid - basically just feels like there is extra noise thats not supposed to be there.
#1486
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p.s. I got my fuel pump back from DW. Anyone wants it before I put it up in classifieds? $130 shipped, has 1.5 years of warranty left. Comes with 90-93 installation. 94-05 installation kit is like $10-20.
#1487
The manifold is weird, there's a nipple on either side of the runners, and cast in is a largish vacuum reservoir. Odd since all it does is vent at higher revs. Anyway, if you do, try to get checkvalve on the right side of that, so if you're in boost you can hold it open? I did mine wrong, still worked. :-)
#1488
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I fixed everything. This time it was ANOTHER LOOSE PLUG WIRE, this time the cap was not fully seated on the coil. FML there are only 4 wires with 8 connections, I'm retarded.
Anyways, hope in LS coils restored. 0.035" gap is great and ******* huge.
Ran 26-27psi. Have a tiny little issue, though. The roads here are good, but not perfect. So any small bump I hit while WOT results in teeny bit of wheelspin - barely noticeable while driving - but shows up in logs as a small RPM jump. This causes Virtual Dyno to create massive spikes which I have to manually edit out. No biggie but annoying (and mind blowing, tbh. We're talking about 5th gear here...)
VD:
Megasquirt log. Its PERFECT. Look at that - Perfect fuel pressure. Perfect AFR, Perfect boost control, Perfect spark, Perfect turbo RPM. Its just... so pretty.
Anyways, hope in LS coils restored. 0.035" gap is great and ******* huge.
Ran 26-27psi. Have a tiny little issue, though. The roads here are good, but not perfect. So any small bump I hit while WOT results in teeny bit of wheelspin - barely noticeable while driving - but shows up in logs as a small RPM jump. This causes Virtual Dyno to create massive spikes which I have to manually edit out. No biggie but annoying (and mind blowing, tbh. We're talking about 5th gear here...)
VD:
Megasquirt log. Its PERFECT. Look at that - Perfect fuel pressure. Perfect AFR, Perfect boost control, Perfect spark, Perfect turbo RPM. Its just... so pretty.
#1489
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Couple of more things
- I hit 88% injector duty - woo hoo 8% fuel still left!
- Boost control hits a low 12% at redline trying to maintain 26psi. 0% is ALLOFIT, so I'm very, very close.
- Intake Temperature only goes up 20*
- Full boost at 3600rpm
- Lowest voltage during the pull was 13.4V
- I hit 88% injector duty - woo hoo 8% fuel still left!
- Boost control hits a low 12% at redline trying to maintain 26psi. 0% is ALLOFIT, so I'm very, very close.
- Intake Temperature only goes up 20*
- Full boost at 3600rpm
- Lowest voltage during the pull was 13.4V
#1492
goddamn that EFR spools fast. Quick GT2871 vs. EFR 6758 virtualdyno comparison: http://www.miata.fi/kuvat/6758_2871.png
We seem to have pretty much the same ignition timing at the end of the rpm range. I have more timing low/mid-range. Mine start at 18deg @230kPa(4K rpm) where you start with 12deg@280kPa (3.6K)
We seem to have pretty much the same ignition timing at the end of the rpm range. I have more timing low/mid-range. Mine start at 18deg @230kPa(4K rpm) where you start with 12deg@280kPa (3.6K)
#1496
Psh, not even over 400ftlbs.
Seriously cant wait to see you run all of it I bet there's more boost to be made in the mid range even now, and a heck of a lot more on the top end if you can stave off the det.
lso, did you see BW tested the next speed line on the compressor and it actually chokes flow at a higher flow than they initially estimated? I think 480hp on e85 is possible looking at the compressor map.
Seriously cant wait to see you run all of it I bet there's more boost to be made in the mid range even now, and a heck of a lot more on the top end if you can stave off the det.
lso, did you see BW tested the next speed line on the compressor and it actually chokes flow at a higher flow than they initially estimated? I think 480hp on e85 is possible looking at the compressor map.
#1497
Combining the results from this thread (like the ones shown a few posts above) with the fact that in my garage I have: An EFR6258, ID1000s, Rev eMS2, all other turbo bits makes me so so SAD.
I wish I had time to work on my car.
Maybe in the three weeks between the end of the SCCA Runoffs and the arrival of my second child I'll have time to finish my B16 Civic swap and throw all the turbo stuff I have on my miata.
Maybe
Congrats on finding your little problems and getting the car running well. Looks nasty
I wish I had time to work on my car.
Maybe in the three weeks between the end of the SCCA Runoffs and the arrival of my second child I'll have time to finish my B16 Civic swap and throw all the turbo stuff I have on my miata.
Maybe
Congrats on finding your little problems and getting the car running well. Looks nasty
#1499
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goddamn that EFR spools fast. Quick GT2871 vs. EFR 6758 virtualdyno comparison: http://www.miata.fi/kuvat/6758_2871.png
We seem to have pretty much the same ignition timing at the end of the rpm range. I have more timing low/mid-range. Mine start at 18deg @230kPa(4K rpm) where you start with 12deg@280kPa (3.6K)
We seem to have pretty much the same ignition timing at the end of the rpm range. I have more timing low/mid-range. Mine start at 18deg @230kPa(4K rpm) where you start with 12deg@280kPa (3.6K)
Surprisingly I'd say it gets easier to do pulls the more power you have - because it takes a lot less time and road. Giant brakes help immensely
#1500
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Psh, not even over 400ftlbs.
Seriously cant wait to see you run all of it I bet there's more boost to be made in the mid range even now, and a heck of a lot more on the top end if you can stave off the det.
lso, did you see BW tested the next speed line on the compressor and it actually chokes flow at a higher flow than they initially estimated? I think 480hp on e85 is possible looking at the compressor map.
Seriously cant wait to see you run all of it I bet there's more boost to be made in the mid range even now, and a heck of a lot more on the top end if you can stave off the det.
lso, did you see BW tested the next speed line on the compressor and it actually chokes flow at a higher flow than they initially estimated? I think 480hp on e85 is possible looking at the compressor map.