Injector timing with upgraded camshaft

**Aitch** · 03-13-2021

I've just installed a 215 223 581 581 112 lobe separation camshaft and was wondering if I need to adjust injector timing as the car runs well and I have the correct AFR but I can smell fuel when I stop at lights.
Can anyone help, thanks.

**84Elky** · 03-16-2021

Originally Posted by Aitch

I've just installed a 215 223 581 581 112 lobe separation camshaft and was wondering if I need to adjust injector timing as the car runs well and I have the correct AFR but I can smell fuel when I stop at lights.
Can anyone help, thanks.

Info as to engine, ECM, BIN mask, etc. would help. But in general, when a more radical cam is installed, vacuum at idle will be reduced which will require fueling changes at idle, and almost certainly everywhere else in the used RPM range.