Reset ECM after injector install necessary?
Race Director
Joined: Apr 2003
Posts: 17,700
Likes: 1,667
From: moraga ca
This falls under the "Runs OK" category. You have new injectors, the system needs to re-learn the BLMs across the board. Might as well give it a blank slate. I have to assume you are replacing injectors because there is an issue. Why do you want to start operating the new injectors with information from faulty injectors? The adjustments don't happen immediately. It has to see the conditions and adjust. It should actually start running better after a few drives as it see all the different load/airflow/RPM conditions.
Are you data logging? Where are your BLMs now? Bosch III's are known to need some Voltage offset adjustments (that for some unknown reason) that are not published. For some reason it seems the Iron headed L98 has more issue with this than the Aluminum headed 'Vette motor.
Is re-setting the radio presets that much of an issue? I mean, write them down and put the back in. This can't take more than 5 minutes and it's about safety.
Yes, other tings can happen. The car has electricity at the ready it in circuits. A slipped wrench, accidentally breaking a wire, or other means that could expose a connection could cause an arc spark. This could cause a fire as mentioned or could short or overload other electrical components. I would say it is rare and just the right sequence of events would have to happen to cause damage. I guess I just watched "Final Destination" too many times.
Are you data logging? Where are your BLMs now? Bosch III's are known to need some Voltage offset adjustments (that for some unknown reason) that are not published. For some reason it seems the Iron headed L98 has more issue with this than the Aluminum headed 'Vette motor.
Is re-setting the radio presets that much of an issue? I mean, write them down and put the back in. This can't take more than 5 minutes and it's about safety.
Yes, other tings can happen. The car has electricity at the ready it in circuits. A slipped wrench, accidentally breaking a wire, or other means that could expose a connection could cause an arc spark. This could cause a fire as mentioned or could short or overload other electrical components. I would say it is rare and just the right sequence of events would have to happen to cause damage. I guess I just watched "Final Destination" too many times.
Drifting
Joined: Jun 2018
Posts: 1,678
Likes: 229
From: Michigan
There was 3 posts before mine but you chose mine to quote? 
Didn't even look at the date of the first post.
Kind of makes me think... why do we tell people to search old threads if it is such a sin to use them?
Didn't even look at the date of the first post.
Kind of makes me think... why do we tell people to search old threads if it is such a sin to use them?
Last edited by KyleF; Dec 20, 2019 at 10:39 AM.
Drifting
Joined: Nov 2015
Posts: 1,710
Likes: 330
Finalist 2020 C4 of the Year - Unmodified
Fuel lines are self bleeding, as soon as the fuel pump turns on. Cap has nothing to do with it.
Removing the cap relieves pressure from the tank that could push fuel out of your disassembled fuel rails during an injector swap. Fuel getting pushed out is messy, and a fire hazard.
Removing the cap relieves pressure from the tank that could push fuel out of your disassembled fuel rails during an injector swap. Fuel getting pushed out is messy, and a fire hazard.
These days, I move to the rubber fuel lines at the tank and clamp those off. Say, that requires me to remove the gas cap, doesn't it?
Drifting
Joined: Nov 1999
Posts: 1,502
Likes: 12
From: Yorktown Heights NY
If you went from stock 24# to Bosch 3 24# you still need to update the injector map because the new injectors inject at a different duration curve than the old stock ones.....you have to ask FIC for this information.
