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89 Foxbody ON3 Turbo Tuning Help!

  • Thread starter Thread starter Ncarter
  • Start date Start date Jul 22, 2024
N

Ncarter

Member
Jul 9, 2020
17
2
13
Michigan
Jul 22, 2024
#1
  • Jul 22, 2024
  • #1
Hi, I,m using Microsquirt software and an Innovate MTX-L + Wideband to tune my car. Having an issue running around 2K RPM and it is showing 22:1 AFR on the Wideband but Microsquirt is does not read it correctly. It is showing 9:1 and the car is starving for fuel. The car is running extremely lean and we have tried calibrating the Wideband to the Microsquirt software and that didn't fix the issue.

Attached is a datalog from my most recent drive. If anyone has suggestions on how I can fix this please let me know.
 

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  • 2024-07-22_20.31.56.mlg
    2024-07-22_20.31.56.mlg
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90sickfox

Wasn't a pretty sight...and I've got big hands
SN Certified Technician
Mar 2, 2015
6,945
5,816
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Jul 27, 2024
#2
  • Jul 27, 2024
  • #2
What else is done to your car engine ? What size injectors are you running ?
 
N

Ncarter

Member
Jul 9, 2020
17
2
13
Michigan
Jul 27, 2024
#3
  • Jul 27, 2024
  • #3
Hi 90sickfox,

I have a base On3 turbo kit so rated at approximately 6lbs of boost. It came with 60 lb injectors and a 340lph fuel pump. Only other mod is a 3:73 gear.
 
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