Check out:
https://www.tamparacing.com/forums/s...ighlight=crome

Then check out:
http://www.phearable.net/tech/efibeginnerguide.html

Quote from http://www.phearable.net/tech/efibeginnerguide.html
"- What is required to have your vehicle tuned on Crome Pro:
1. A vehicle/motor/setup in good mechanical condition.
2. A chipped/socketed obd1 ecu & a obd conversion harness if your vehicle requires one.
(Consult with your tuner to provide you with a chipped ecu or ecu chipping services)
3. The proper sized & resistence injectors for your application. (Ask your tuner)
92-00 Civic/Integra vehicles require Saturated HIGH RESISTANCE injectors (11-14 ohm)
LOW RESISTANCE injectors maybe used in 92-00 Civic/Integras using a resistor box.
240cc = 180-190whp 310cc = 200-220whp 370cc = 220-280whp
440cc = 280-330whp 550cc = 330whp-380whp 660cc = 380whp-425whp
720cc = 425whp-475whp 880cc = 475whp-525whp 1000cc = 525whp-600whp
4. The proper sized fuel pump. (Most street applications: Walbro 255lph fuel pump).
5. Spark plugs, NGK BKR7E-N-11 for most applications under 400 whp. Consult your tuner.
5. Optional: Fuel pressure regulator & Guage
6. Optional: Cam Gears for dyno tuning purposes."