I noticed that you likely have Warm Up Enrichment running too long. Should be 100 at 160 --
I am attaching my latest tune so you can maybe pull some settings.
Model/Year: 1993 Ford Mustang (Fox‑body)
Engine
Base Engine: 5.0 L Windsor small‑block (306 bored over)
Camshaft: Ford Racing X‑303 roller cam — 286° adv / 224° @0.050", 0.542" lift
Trick Flow R series intake
Trick Flow lower
Dss flat top pistons.
Throttle Body: 90 mm aftermarket unit
Intake: Cold‑air intake (fender‑mount style)
Fuel Injectors: 34 lb/hr from a friends coyote
Fuel Pressure Regulator: OEM (vac‑referenced) — base 39 psi (assumed)
Wideband O₂: AEM X‑Series 30‑0300; analog 0–5 V signal wired to DB37 pin 23 (EGO1)
Exhaust
Headers: Shorty headers (equal‑length, 1‑5/8")
Mid‑Pipe: High‑flow crossover (X‑pipe
Full 2.5" exhaust with Borla ATAK mufflers ( no cats)
Engine Management & Tuning Hardware
ECU: MegaSquirt PNP‑2 (MSPNP2‑EEC48A) — hardware v2.0, firmware 3.4.4
Transmission: Tremec RS‑7003J Magnum 6‑speed (retains mechanical speedo output)
Rear Gear: 3.73 8.8” axle
Auxiliary Systems
Cooling: Aluminum radiator Moshimoto
Ignition: Demon Coil
WOT AFR: 12.5–12.8 : 1 (stable)
Peak Injector Duty: 91 % at 5450 rpm, 100 kPa
I am attaching my latest tune so you can maybe pull some settings.
Model/Year: 1993 Ford Mustang (Fox‑body)
Engine
Base Engine: 5.0 L Windsor small‑block (306 bored over)
Camshaft: Ford Racing X‑303 roller cam — 286° adv / 224° @0.050", 0.542" lift
Trick Flow R series intake
Trick Flow lower
Dss flat top pistons.
Throttle Body: 90 mm aftermarket unit
Intake: Cold‑air intake (fender‑mount style)
Fuel Injectors: 34 lb/hr from a friends coyote
Fuel Pressure Regulator: OEM (vac‑referenced) — base 39 psi (assumed)
Wideband O₂: AEM X‑Series 30‑0300; analog 0–5 V signal wired to DB37 pin 23 (EGO1)
Exhaust
Headers: Shorty headers (equal‑length, 1‑5/8")
Mid‑Pipe: High‑flow crossover (X‑pipe
Full 2.5" exhaust with Borla ATAK mufflers ( no cats)
Engine Management & Tuning Hardware
ECU: MegaSquirt PNP‑2 (MSPNP2‑EEC48A) — hardware v2.0, firmware 3.4.4
Transmission: Tremec RS‑7003J Magnum 6‑speed (retains mechanical speedo output)
Rear Gear: 3.73 8.8” axle
Auxiliary Systems
Cooling: Aluminum radiator Moshimoto
Ignition: Demon Coil
WOT AFR: 12.5–12.8 : 1 (stable)
Peak Injector Duty: 91 % at 5450 rpm, 100 kPa