slappomatt
NAXJA Forum User
- Location
- San Diego CA,
I know very little about the jeep FI. Would this work on my 95 4.0? I would like to get a little more power out of the stock system until I can get around to going standalone ecu.
No, you can only retard it with the FIC. No piggy back can advance timing. If they could they would either have to see in to the future or do it in an incorrect way.
Interestingly, today I called Superchips and they said that with their programmer they can change the timing and fuel tables thru the OBD port. He said that they can add up top 10-20 degrees advance and usually lean it a bit at different points throughout. Not like add 6-8 degrees everywhere. Because you can't tell where they add what I don't see how to use their flashpaq in a boosted application.
And there, is the difference between a hardware modification and a software modification.
The idea is to advance the timing with the 6*CPS mod which seems to help overall N/A performance throughout the power band, and then use the AEM F/IC to 'retard' the timing where necessary.
I will break out the hammer and vice later. Thanks. Maybe super glue it in it's new position.
Well. It makes a ton of sense, to me, that the factory sensor would have a positive locator stop and an aftermarket (read cheap repro) would not. The factory has to warranty the sensor to last and guarantee to the Feds that the timing will not change thus affecting the emissions. What this means is that the timing, using an aftermarket Sensor, could be anywhere.
Always better to go to Jeep for a Sensor... Worth the extra bucks to get a good part.