Support Material & Articles of Interest
8400-8405 ECU instructions
AC Delco/Delphi/GM LS2 Heavy Duty Coil charge times
Using the 8405P ECU does NOT require a "pull up" resistor for the coils, since it can only run smart coils.
On the 8400/8405 ECU the coil pin outs are as follows:
If your device cannot view the pdf, you can open this file instead:
| pe3-84xx_pin_out.pdf |
Technical articles
Most of the HOOK magazine articles I have written are saved here. The FARM 250 tuning guide is at the bottom of this page ...
| air_filters_101.pdf |
| air_filters_-_part_2.pdf |
| manifold_design_article.pdf |
| data_logging_article.pdf |
| sensory_overload_-_article_about_sensors.pdf |
| choosing_carbs_using_math.pdf |
| ignition_history_revision_1.pdf |
| part_1_-_basic_electricity.pdf |
| part_2_-_wiring___connectors.pdf |
| part_3_-_electrical_loads.pdf |
| spark_plugs_part_one_rev.pdf |
| spark_plugs_part_2.pdf |
Farm 250 carburetor tuning guide
| farm_carburetor_tuning_guide__1_.pdf |