The JEC Reflash is designed for the Unisia Jec's Re-programmable ECU. These ECU's are not very common but found in various Subaru and Nissan platforms around 1999-2002. So far we have been able to determine that we can reprogram a selection of Subaru models allowing us to retune the ignition and fueling for various modifications and configurations. With proper adjustments, we are able to refine the tune for a broader power band, nearly remove the infamous "turbo lag" in the mid-range of the power band and have even been told but multiple customers, that the fuel economy of the vehicle has improved.
NEW Features
- Check Engine Lights (no problem)
- Improved Knock Control Sensitivity
- Radiator Fan Activation Thresholds
- Speed Limiter Increase
The Stage Map tuning options for these vehicles are as follows.
Stage 1 (S1) - Stock or Cat back & Intake or some variation + Cams 1000 / 1500 Grind or similar (87 or 91 oct)
- The Stage 1 map is designed for vehicle running stock configurations, or have some sort of light modifications to the vehicle including, intake and/or cat back exhaust system. This map will work with either 87, 89, or 91 octane fuels.
Horsepower and Torque Results
Peak Horsepower Increase: +8-12 wheel horsepower
Peak Torque Increase: +7-12 wheel torque
Maximum Horsepower Gains: +10-12 wheel horsepower @ 5000 RPM
Maximum Torque Gains: +7-10 wheel torque @ 3700 RPM
Stage 2 (S2) - Headers, Cat-back, Intake, High flow cat or No Cat + Cams 1000 / 1500 Grind or similar (91 octane)
- The Stage 2 map is designed for vehicle running aftermarket headers, intake, cat back and either a high flow cat or no cat. This tune is designed around stock cams or similar including Delta Cams 1000,1500 grinds and Tech Works Engineering Cams. This map will work on 91 octane or above fuels.
Horsepower and Torque Results
Peak Horsepower Increase: +20-24 wheel horsepower
Peak Torque Increase: +12-18 wheel torque
Maximum Horsepower Gains: +20-24 wheel horsepower @ 5100 RPM
Maximum Torque Gains: +12-15 wheel torque @ 4000 RPM
Stage 3 (S3) - Stage 2 + Cams 2000 Grind or similar (91 Oct)
- The Stage 3 map is designed for more aggressive modifications, including everything on the Stage 2 tune and 2000 grind cams from Delta Cams or similar cam from Tech Works Engineering.
Horsepower and Torque Results
Peak Horsepower Increase: +30-35 wheel horsepower
Peak Torque Increase: +12-18 wheel torque
Maximum Horsepower Gains: +25-30 wheel horsepower @ 5600 RPM
Maximum Torque Gains: +12-15 wheel torque @ 4000 RPM
Stage 4 (S4) - Stage 3 + High Compression 11.5:1 (91 Oct)
- The Stage 4 map is designed for a very aggressive 91 octane tune with a similar configuration to Stage 3, with additional high compression pistons which you can find through Tech Works Engineering or similar companies with 11.5:1 compression pistons.
Horsepower and Torque Results
Peak Horsepower Increase: +40-50 wheel horsepower
Peak Torque Increase: +20-25 wheel torque
Maximum Horsepower Gains: +35-45 wheel horsepower @ 5600 RPM
Maximum Torque Gains: +15-20 wheel torque @ 4000 RPM
Stage 5 (S5) - Stage 3 + High Compression 12.5:1 (100 Oct)
- The Stage 5 map is designed to be our most aggressive map based on vehicle doing nothing other than racing their vehicles on high octane fuels of 100 octane or higher. The compression recommendation is about 12:1 compression pistons.
Horsepower and Torque Results
Peak Horsepower Increase: +50-60 wheel horsepower
Peak Torque Increase: +30-35 wheel torque
Maximum Horsepower Gains: +45-55 wheel horsepower @ 5600 RPM
Maximum Torque Gains: +25-30 wheel torque @ 4000 RPM
How to determine if we can reflash your ECU with Stage maps or Custom mapping.
1. The ECU label states "Made in Japan"
2. The ECU label states "Unisia Jecs Corporation"
3. The ECU has a three plug harness
4. The ECU was most likely pulled from one of the following vehicles
- Subaru Impreza 1999-2002
- Subaru Forester 1999-2002
- Subaru Legacy 1999-2001
ECU Upgrades Verification (requires prior ECU license)
1. A prior V1 ECU License or V2 Spork ECU license is required from a previous reflash performed by William T Knose Jr.
2. All ECU upgrades verification will inspect the ECU ROM for a proper license. This is done during testing procedures when the original ECU is received.
V2 Spork ECU License
1. ECU's displaying an X.2 on the Delicious Tuning label are equipped with the proper V2 Spork ECU License
Additional Notes on Shipping Your ECU
1. When ordering this particular reflash service you will need to mail in your ECU to our mailing address
2. Please provide your name, return shipping address and receipt of payment from our website including stage mapping you requested
3. Once the ECU is received it will be reflashed, tested and mailed back out within 3 business days via USPS