New '93 Fox -On3 Turbo Build Project- PICS

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Franomania

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Apr 8, 2020
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Toronto, ON
Looking immediately much better!! see attached log from cold start up to about 170deg, wasnt getting up much further since it was just idling. Around 145deg it started oscillating. It still has the mech fan on so the bit of air passing over might help it stay a bit cooler than stat temp at idle in my garage.
I gave it a few blips of the throttle as well at the end of the log.
 

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  • 2021-06-10_12.10.55. - Steve REV1.msl
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Franomania

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Apr 8, 2020
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Toronto, ON
So i took another log from cold start again. Oscillations have definitely improved on the warm up along with after throttle blip idling as well. On startup car took a bit more cycles to fire up, maybe i'll need to play with the ASE, but after my research i shouldnt worry about that until the warm idle is settled down.
Thanks again Steve....you are a magician with these it seems. Cant wait to till i have a better understanding.
 

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  • 2021-06-10_12.10.55. - Steve REV2.msl
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a91what

SendMeUrDataLog
Mod Dude
Apr 6, 2011
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Hillsborough county
The oscillation could be a few things, I would first try easing back on the ign correction at idle. Look for this at the bottom of the idle settings, don't mess with the rpm values just make the advance numbers smaller.
 

Franomania

Member
Apr 8, 2020
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Toronto, ON
Update:
After a few days of tinkering, all i was able to accomplish was lowering the PWM initial table values which seemed to help out. Changing the adaptive advance really didn't seem to do enough. So with a half decent idle I decided to try and go up and down the street a few times. I thought it might be premature but I was convinced to try out VEAL on low speed/RPM. It was immediately raising cells but also under decel instantly removing fuel from the same cells. Not sure if this is normal but i'm not going to mess with it anymore just yet.

More importantly, i found out my idle & recovery still is not good enough as the car continued to die once i let off the throttle which began to happen more and more frequently not necessarily after a certain sequence. I am almost at my witts end trying to tinker and play around, Feel's like i'm chasing my own tail.

Anything stick out here why it would be dying off after blipping the throttle/after driving for about 10s? I get these massive AFR spikes as well out of nowhere.
Last thought throwing this out there. Is it possible my MAP is not functioning properly intermittently? It stays dead constant during different TPS positions shown below.

1623624769388.png


I have attached the log from driving around with part-time VEAL (about an hour) along with a short one of it just dying off by itself.

Any ideas are more than welcome!
 

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  • 2021-06-13_16.13.47.msl initlal idle setting change.msl
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  • 2021-06-11_18.31.15-short drive.zip
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a91what

SendMeUrDataLog
Mod Dude
Apr 6, 2011
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Is your map sensor behind a check valve? I ask because I do not see a change in the map reading in the picture above until after the car is off.
 

Franomania

Member
Apr 8, 2020
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Toronto, ON
The hose runs from the vac tree direct inside the car, to a tee for both boost gauge and MS. Its an MSPNP2 and calibrated to internal MAP.
 

a91what

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Mod Dude
Apr 6, 2011
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you idle at 28kpa; the max kpa at sea level is 100kpa your max kpa is 89 so I have to assume you are at a higher altitude. you could turn on the baro sensor in general settings and use %baro as the fuel load if this is the case.

as it sits now your lowest fuel row is likely 30kpa but you idle at 28kpa... this means that you are using 30kpa for cruise range at speed and for decel. You need to rescale the VE table
 

Franomania

Member
Apr 8, 2020
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Toronto, ON
Im in toronto so it's not high. I noticed the same, which is leading me to believe malfunctioning MAP. Lower than normal Kpa at atmospheric and lower than normal at idle/decel. Gets to min of 14kpa under decel which I haven't seen usually.
 

a91what

SendMeUrDataLog
Mod Dude
Apr 6, 2011
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Im in toronto so it's not high. I noticed the same, which is leading me to believe malfunctioning MAP. Lower than normal Kpa at atmospheric and lower than normal at idle/decel. Gets to min of 14kpa under decel which I haven't seen usually.
you should be calibrated to a MPXH6400 for the map and a one bar for the baro sensor