Hi,

It all depends on RF issues generated by the engine ignition. As a rule of thumb, you want as much distance as posible between the ignition components and the receiver components but some ignition setups are very clean from RF while others are leaky.

The short answer is that you just have to play. Set up the system in the way you desire, start the engine and do a range check with the engine running full bore. If it passes the range check, you are good to go. Otherwise, you have to increase the distance between the ignition components and the rx components.

Hope this helps

Elson