V-Twin Forum banner

1 - 2 of 2 Posts

·
05 SE Fat Boy
Joined
·
46 Posts
Discussion Starter #1
SEPST

When changing fuel injectors to higher delivery units............ 4.3 g/s to 5.3 g/s

What effects does the race tuner have on the maps / calibrations IF:

In the "tuning set up" catagory.....

1. You do not change the g/s to match the new injectors (leave them at 4.3 even tho you have installed 5.3)?

and / or

2. You do change the g/s to match the new injectors?

Thanks for any help with this.
 

·
Thread Ender
Joined
·
3,968 Posts
Hard to say exactly, but generally, if you install 5.3 injectors and tell the ECM that you have 4.3's installed it will deliver more fuel than it intends to. Nothing wrong with this. With the bigger motors sometimes you have to do this or you run out of room in the VE tables. A lot of guys will also up the cubic inches.
 
1 - 2 of 2 Posts
Top