I'm looking at purchasing a plug and play harness from the relevant place but there are 3 different harnesses and imconfused tbh Id just like to no either first what one most people use or even what one tuning developments sell? The 3 options are; 1. EMange Ulitmate knock sensor and coolant temp 2. Emanage Ulitmate knock sensor and Intake air temp 3. Emanage Ulitmate intake air temp and coolant temp If someone has had same problem Would be greatly appreciated Thanks Chand