2017 5.2 Shelby Gt350 swapped F100 cold start
Posted: 2021 Oct 09, 12:03
Hey everyone
Boss has a 1970 F100 with 2017 Shelby Gt350 5.2 swapped in it.
Engine is stock. other then a cone air filter.
Issue I'm having is engine fires right up when cranking engine, then the RPM drops and I can hear the engine stumble or blubber then it clears up and idles fine. It does this sometime after the truck has been driven, engine is up to operating temp. park the truck, come back to it a couple hours later and coolant temps can be in the 100F range. The engine fires then stumbles or blubber then idle comes right back to a smooth idle.
I'm using SCT advantage to tune. been using Hptuners to log. wondering if I need to use LiveLInk since I might be missing something.
I've made some changes to Base Fuel Table Cold. I added about 20% fuel .4 load -40F to 70F No changes.
after doing some digging I think it maybe in my MAF. Since cone filter may have messed with airflow enough to change start up.
Monday ill added to maf table in the area its having the issue.
Here is a log of it acting up. Let me know if i should log something else.
Thanks
Chris
Also this truck is going to SEMA. I have some youtube videos of it if interested https://youtu.be/kqwr-pKP3Dk
This has been up for a while then realized I didnt post tune of log
Boss has a 1970 F100 with 2017 Shelby Gt350 5.2 swapped in it.
Engine is stock. other then a cone air filter.
Issue I'm having is engine fires right up when cranking engine, then the RPM drops and I can hear the engine stumble or blubber then it clears up and idles fine. It does this sometime after the truck has been driven, engine is up to operating temp. park the truck, come back to it a couple hours later and coolant temps can be in the 100F range. The engine fires then stumbles or blubber then idle comes right back to a smooth idle.
I'm using SCT advantage to tune. been using Hptuners to log. wondering if I need to use LiveLInk since I might be missing something.
I've made some changes to Base Fuel Table Cold. I added about 20% fuel .4 load -40F to 70F No changes.
after doing some digging I think it maybe in my MAF. Since cone filter may have messed with airflow enough to change start up.
Monday ill added to maf table in the area its having the issue.
Here is a log of it acting up. Let me know if i should log something else.
Thanks
Chris
Also this truck is going to SEMA. I have some youtube videos of it if interested https://youtu.be/kqwr-pKP3Dk
This has been up for a while then realized I didnt post tune of log