Changing from 880 to 440's injectors

burmese434 · Post by **burmese434** » Mon Oct 25, 2010 10:58 pm

Im using the tune on here and when i change from 880 to 440 whats the best way to adjust.. Should I change the overall fuel trim?

Post by **Spunkster** » Tue Oct 26, 2010 9:37 am

First change the injector size and then make adjustments to the overall fuel trim, then fine tune the tables.

burmese434 · Post by **burmese434** » Tue Oct 26, 2010 9:51 am

What number should I choose like -20 or -10? for the overall fuel trim

Post by **Spunkster** » Tue Oct 26, 2010 10:32 am

You have to use a wideband and measure the air fuel ratio to know what to change.