Controls up to 4 injectors with 3 to 7 ohms of impedance
4 Bosch 160lb/h (1600cc) injectors
Dimensions: 115 x 90 x 33mm
To determine which Peak & Hold you need
Grab a multi-meter and select Ohms 200
Touch the positive and negative leads of multi-meter together to measure resistance (record this number...i.e. measured 0.3)
Then take the positive and negative leads from multi-meter and put on each terminal of the injector. Doesn't matter the order. Record this measurement
Take the ohms measurement from Step 3 and then subtract the number you got in Step 2 (i.e. Step 3 4.8ohms - Step 2 0.3ohms = Total 4.5ohms)
High Impedance Injectors - Above 7ohms - No Peak and Hold Boxes are needed. Peak and Hold 2A - 3ohms to 7ohms (Bosch 160lb/hr). Peak and Hold 4A - Below 3ohms to 1.5ohms. Peak and Hold 8A - Below 1.5ohms (Billet Atomizer*). All low impedance Billet Atomizer Injectors manufactured after Nov. 2012 require 8A regardless of measured resistance.
*Billet Atomizer Injectors - Anything prior to serial # C300**** should only use the 4A/1A. This only applies to injectors manufactured prior to Nov. 2012.