I honestly believe that with both projects - that my 'problem' will be to resist the urge not to turn it up to 11... that's when hyperuetetic pistons shatter, and glass bottom ends let the boost out.... so as long as I resist the urge, that last x% is safe.
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DG,
Does the sequential injection allow skewing cylinder to cylinder via a percentage or does it apply individual maps per cylinder? Similar question with the timing.
SBG,
A BBB cam sensor is as easy as one off of the LC2 (that's Turbo6) with a gear swap just like puting a SBB HEI on a BBB. Though the DG method of converting a distributor is probably overall simpler.Central TEXAS Sleeper
USAF Physicist
ROA# 9790
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Originally posted by Bob Holmes View PostDo the math TC, do you really think that all the fuel can get in the chamber if you only spray while the valve is open? Look at OEM cam specs.
And yes, fuel puddles on the valve. Has since the beginning of the ICE. Unless you are using direct injection, fuel will puddle on the valve.
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Math TC, give it a try. Its your friend.
At some point you'll progress to reading articles with some critical thinking.Last edited by Bob Holmes; November 18, 2011, 12:13 AM.I'm still learning
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Originally posted by CTX-SLPR View PostDG,
Does the sequential injection allow skewing cylinder to cylinder via a percentage or does it apply individual maps per cylinder? Similar question with the timing.
Now, for individual fuel and timing - this can be done individually per cylinder. I set up the tabes as close as I could get manually, then turned on the self correction for all 8 channels (with 8 wideband O2 sensors). THis was the Secret Sauce in our engine masters challenge. Maybe TC the EFI guru can find another system out there that allows 8 channels of closed loop correction?www.realtuners.com - catch the RealTuners Radio Podcast on Youtube, Facebook, iTunes, and anywhere else podcasts are distributed!
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Originally posted by dieselgeek View PostOn current release MS3x firmware, the injection timing is configured for all cylinders with a single table, the table allows varying injection event end time (or begin time, or midpoint of the injection cycle - your choice) based on RPM and Manifold Pressure (just like a fuel VE table only selecting times instead of fuel quantity). So as the engine speed or load changes, you can vary the injection phasing indefinitely. But it is for all 8 cylinders.
Now, for individual fuel and timing - this can be done individually per cylinder. I set up the tabes as close as I could get manually, then turned on the self correction for all 8 channels (with 8 wideband O2 sensors). THis was the Secret Sauce in our engine masters challenge. Maybe TC the EFI guru can find another system out there that allows 8 channels of closed loop correction?Central TEXAS Sleeper
USAF Physicist
ROA# 9790
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Originally posted by CTX-SLPR View PostIf I'm reading this right, I could tune for air flow variations based off of manifold pressure and rpm to compensate for an uneven plenum distribution?www.realtuners.com - catch the RealTuners Radio Podcast on Youtube, Facebook, iTunes, and anywhere else podcasts are distributed!
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Originally posted by SuperBuickGuy View Postwhy not 6 individual runners? That's completely solve the distribution problem (and look awesome)Central TEXAS Sleeper
USAF Physicist
ROA# 9790
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with individual runners (an individual butterfly valves) you could balance across the 6 runners (it wouldn't matter whether or not the air is pressurized or not at the top of the runner) - we do it all the time in HVAC work. Of course, it does beg the question of "why?" It would be an interesting feat of engineering - would require either a Rube mechanical device (which opens each butterfly to a specific point depending on needed flow rate) or 6 individual electric butterfly valves and would require 6 2 bar MAF sensors and 6 O2 sensors.... but again, back to the question of why bother?
as I'm rereading this - I realize it could be even better. 6 vacuum gauges screwed into each tube, and 6 exhaust temp gauges screwed into the exhaust manifold.... and a video camera so you could watch it from inside.... hmmm, maybe I better get to work before I get any more good ideasLast edited by SuperBuickGuy; November 20, 2011, 09:40 AM.Doing it all wrong since 1966
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Originally posted by SuperBuickGuy View Postwith individual runners (an individual butterfly valves) you could balance across the 6 runners (it wouldn't matter whether or not the air is pressurized or not at the top of the runner) - we do it all the time in HVAC work. Of course, it does beg the question of "why?" It would be an interesting feat of engineering - would require either a Rube mechanical device (which opens each butterfly to a specific point depending on needed flow rate) or 6 individual electric butterfly valves and would require 6 2 bar MAF sensors and 6 O2 sensors.... but again, back to the question of why bother?
as I'm rereading this - I realize it could be even better. 6 vacuum gauges screwed into each tube, and 6 exhaust temp gauges screwed into the exhaust manifold.... and a video camera so you could watch it from inside.... hmmm, maybe I better get to work before I get any more good ideas
Although with forced induction, the transgressions of the port design disappear rapidly. Something about 20+psi of pressure helps that air charge find it's way to the cylinder in a hurry.www.realtuners.com - catch the RealTuners Radio Podcast on Youtube, Facebook, iTunes, and anywhere else podcasts are distributed!
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