PO had no clue what mods have been done to this car.. Please help
#23
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You don't even know what injectors you have, so you have no idea what to even set required fuel at.
Figure out what you have first.
#24
My current AFR readings on my data log are 14-16 at idle and dip down to 13-14 when accelerating, then 10-12 when in boost. How accurate are these readings? Perhaps a PO already installed a wideband and I did not realize? Or are these just inaccurate readings for my narrowband?
You guys have been awesome so far by the way. Thanks for helping me not blow up my car.
You guys have been awesome so far by the way. Thanks for helping me not blow up my car.
#27
Ok. I have had the flu so the car got put off for a few days. Just pulled the injectors and they have 550 etched in on the back, along with a bunch of other numbers which I wrote down.. not sure if they are important or not. Gonna go out on a limb here and say they're 550cc.
My engine is the 1800cc, and my injectors are 550cc. I am running 92-93 octance. I am uncertain of what I should enter in for Req_fuel in tunerstudio.. I am going to see if I can find the formula.
My engine is the 1800cc, and my injectors are 550cc. I am running 92-93 octance. I am uncertain of what I should enter in for Req_fuel in tunerstudio.. I am going to see if I can find the formula.
#28
Ok. Found the calculator on megasquirt manual, which is here if anyone is every interested: How MegaSquirt(R) EFI Controllers Work
I entered in 109.8 cubic inches (1800cc) and 52.4 lbs/hour which according to some calculator on some website should be 550cc/min. Also have it set as 1 squirt per engine cycle. This gave me a value of 5.5, but that's at an AFR of 14.7. I played around with my target AFR, entered 12.5, and got 6.7. Isn't that LESS fuel? I am confused.
After some more digging I have discovered that improper fueling has caused several others to have my shuttling under load issue. Hopefully this will have me going for now.. Once my AEM wideband comes in, I will be ready to roll!
I entered in 109.8 cubic inches (1800cc) and 52.4 lbs/hour which according to some calculator on some website should be 550cc/min. Also have it set as 1 squirt per engine cycle. This gave me a value of 5.5, but that's at an AFR of 14.7. I played around with my target AFR, entered 12.5, and got 6.7. Isn't that LESS fuel? I am confused.
After some more digging I have discovered that improper fueling has caused several others to have my shuttling under load issue. Hopefully this will have me going for now.. Once my AEM wideband comes in, I will be ready to roll!
Last edited by CantSleep_BuildinStuff; 02-25-2014 at 11:51 PM.
#30
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Ok. Found the calculator on megasquirt manual, which is here if anyone is every interested: How MegaSquirt(R) EFI Controllers Work
I entered in 109.8 cubic inches (1800cc) and 52.4 lbs/hour which according to some calculator on some website should be 550cc/min. Also have it set as 1 squirt per engine cycle. This gave me a value of 5.5, but that's at an AFR of 14.7. I played around with my target AFR, entered 12.5, and got 6.7. Isn't that LESS fuel? I am confused.
After some more digging I have discovered that improper fueling has caused several others to have my shuttling under load issue. Hopefully this will have me going for now.. Once my AEM wideband comes in, I will be ready to roll!
I entered in 109.8 cubic inches (1800cc) and 52.4 lbs/hour which according to some calculator on some website should be 550cc/min. Also have it set as 1 squirt per engine cycle. This gave me a value of 5.5, but that's at an AFR of 14.7. I played around with my target AFR, entered 12.5, and got 6.7. Isn't that LESS fuel? I am confused.
After some more digging I have discovered that improper fueling has caused several others to have my shuttling under load issue. Hopefully this will have me going for now.. Once my AEM wideband comes in, I will be ready to roll!
#33
I meant to say innovate. not AEM. The AFR I was getting was just a number that TunerStudio was spitting out. I don't know if that's just what it's going off of based on a regular O2 sensor or what. There appears to be a bung welded on to the downpipe approx. 5'' downstream of the turbine. I am uncertain of how to determine if this is a wideband or just a regular O2 sensor.
#35
As far as being tuned on that setup, it wasn't. It was running horribly with engine stuttering above 3,000 RPM. It was practically undriveable.
I am unsure of your sarcasm, but ******* with it did actually solve my problem.
#38
Here's my plan:
Load a base map
Enter in my req_fuel value (1800cc, 4 cylinder, 1 squirt per cycle, 52.4 lbs/hour (550cc) = 5.5
Let Autotune in TunerStudio do the rest.
For my now the car is running, I will try this later unless anyone has any better ideas. It is hard to learn all of this on the fly, thanks for the help so far.
#39
My current AFR readings on my data log are 14-16 at idle and dip down to 13-14 when accelerating, then 10-12 when in boost. How accurate are these readings? Perhaps a PO already installed a wideband and I did not realize? Or are these just inaccurate readings for my narrowband?
You guys have been awesome so far by the way. Thanks for helping me not blow up my car.
You guys have been awesome so far by the way. Thanks for helping me not blow up my car.
You wouldn't get those readings without a wideband. Find out what you have before you buy more stuff you probably don't need.
This may involve actually getting under the car and looking for o2 sensors and following wiring from there until you find a controller.