China 2871 dyno run built 1.8l 280hp 250tq 20psi
#21
The dyno is 3 hrs from my house. I already paid $450. The cruise cells are good, the intake cam is good, and my timing is good. Are you suggesting I do a few pulls on the street datalogging and adjust myself, or go to a local dyno and pay for a few pulls on it.
The 9-25 datalog is from the last pull on the dyno, and the 9-28 log is from driving to work this morning.
If the tune can be improved, it's hard to blame the dyno guy for my lack of understanding of the settings in MS. I don't have another 450 to spend right now.
I don't mind if people think my tune is ****. That's fine, and feel free to voice it. Just leave some constructive criticism about the best way for me to rectify the situation.
The 9-25 datalog is from the last pull on the dyno, and the 9-28 log is from driving to work this morning.
If the tune can be improved, it's hard to blame the dyno guy for my lack of understanding of the settings in MS. I don't have another 450 to spend right now.
I don't mind if people think my tune is ****. That's fine, and feel free to voice it. Just leave some constructive criticism about the best way for me to rectify the situation.
#24
AEM. We tuned off my wideband not his. He said the location of mine was superior to his in the tailpipe anyway.
I guess I need to do a few sustained road pulls and review my logs.
WI is too much hassle for me. I'm going to get what I can out of this turbo and be done. I will however add a Map Daddy unless people think I can push the standard MS mapsensor to 25psi
What is a safe AFR at 20-25 psi
I guess I need to do a few sustained road pulls and review my logs.
WI is too much hassle for me. I'm going to get what I can out of this turbo and be done. I will however add a Map Daddy unless people think I can push the standard MS mapsensor to 25psi
What is a safe AFR at 20-25 psi
#27
Boost Czar
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don't go richer than 11.5. otherwise that looks good.
I let mine stay fairly lean below 4psi since I do retard timing at the same time. Since my turbo is smaller, I find myself in boost quite often.
I let mine stay fairly lean below 4psi since I do retard timing at the same time. Since my turbo is smaller, I find myself in boost quite often.
#32
I'm aware that AFR at 12 psi and 25psi would require different amounts of fuel to reach the same AFR. I was concerned that the increase in pressure would increase the heat enough to increase the likelihood of detonation. Which could be quelled by dumping more fuel at the expense of power. Hence going richer than 11.5.
It seems clear that this is misguided, and that I could probably squeeze a bit more power out of my current tune by leaning it out a bit since it dips into the high tens at 20psi
It seems clear that this is misguided, and that I could probably squeeze a bit more power out of my current tune by leaning it out a bit since it dips into the high tens at 20psi
#34
I'm aware that AFR at 12 psi and 25psi would require different amounts of fuel to reach the same AFR. I was concerned that the increase in pressure would increase the heat enough to increase the likelihood of detonation. Which could be quelled by dumping more fuel at the expense of power. Hence going richer than 11.5.
It seems clear that this is misguided, and that I could probably squeeze a bit more power out of my current tune by leaning it out a bit since it dips into the high tens at 20psi
It seems clear that this is misguided, and that I could probably squeeze a bit more power out of my current tune by leaning it out a bit since it dips into the high tens at 20psi
#35
Boost Czar
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Join Date: May 2005
Location: Chantilly, VA
Posts: 79,729
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the addition of extra fuel can only cool the charge so much, slow the burn so much, and lower peak pressure so much. after that it's just going to end up coming out raw out of your exhaust and washing down your cylinders.
#38
dude i run 12.5 at 17 psi and do alright most of the people on here that make apreciable power run mid 11's atlaest man up and give it a shot. Your fuel system is duel feed with a walboro 190 right? the pump is fairly new? the injectors are clean and fairlynew as well? What the hell else is gonna fail on you?
If you did blow a fuel line etc, then not only would your motor fuel cut before it self destructed but you would have to worry about an impending fireball as well.
If you did blow a fuel line etc, then not only would your motor fuel cut before it self destructed but you would have to worry about an impending fireball as well.
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09-30-2018 01:09 PM