Attempted tuning 680 pte's with just an safc with no success. Car would struggle at high rpm's. After investigating all possible problems, I bought keydiver's stage 3 dsmchip with the following specifications:
- 1990-94 MT
- Eprom E742
- Rev limit 7500
- Octane reset: Yes
- Eliminate fuel cut: Yes
- Boost guage converted to knock: Yes
- Launch RPM FWD 3500
- Shift RPM 5500
- AC cutout (throttle): Yes
- Idle RPM: 750
- Injector size 640
- MAS type: stock 1g
- High speed closed loop: Yes
What a world of difference. I'm running a big16g, 190lph pump, and 680pte injectors; All else stock. Car runs almost perfect without safc adjustments. Note that the chip comes with some room to lean out for better performance - better safe than sorry. I'm currently running 20 psi and car pulls like mad.
For those on a budget and can't afford dsmlink, I would highly recommend the dsmchip/safc combo. A used safc can be found on ebay for cheap.
Chip comes ingeniously packed and includes the chip socket to be soldered to the board.
- 1990-94 MT
- Eprom E742
- Rev limit 7500
- Octane reset: Yes
- Eliminate fuel cut: Yes
- Boost guage converted to knock: Yes
- Launch RPM FWD 3500
- Shift RPM 5500
- AC cutout (throttle): Yes
- Idle RPM: 750
- Injector size 640
- MAS type: stock 1g
- High speed closed loop: Yes
What a world of difference. I'm running a big16g, 190lph pump, and 680pte injectors; All else stock. Car runs almost perfect without safc adjustments. Note that the chip comes with some room to lean out for better performance - better safe than sorry. I'm currently running 20 psi and car pulls like mad.
For those on a budget and can't afford dsmlink, I would highly recommend the dsmchip/safc combo. A used safc can be found on ebay for cheap.
Chip comes ingeniously packed and includes the chip socket to be soldered to the board.
