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Thank you for responding to the San Diego County Air District Retrofit Program. The retrofit kit has been certified by CARB, California Air Resource Board. The certification number is B-20-1. The retrofit emission upgrade kit is designed for 1975 and newer vehicles without electronic fuel injection or computer controlled carburetors. The upgrade kit adds feedback computer technology and fuel/air mixture to your vehicle and replaces the old catalytic converter with a new technology three-way catalytic converter.

If your vehicle is 1981 or newer, then it may have a closed-loop controller on it already. This kit does not work with those cars. If your car has an oxygen (O2) sensor, it does not qualify.

To save time and expense on your part, please follow the steps below.

Step 1. Does your car qualify?

  • Does your car have a catalytic converter? Must be "Yes" to qualify.
  • Does your car have an O2 sensor? Must be "No" to qualify. You can check an old smog test report. If an O2 sensor is listed with the other equipment in the under hood inspection report, your car does not qualify. If you are not sure, call us at (619) 674-2252 or e-mail us and we will look it up for you.
  • Your car must be currently registered to an address in San Diego county to qualify for the program. If your car is not currently registered, you can not participate. You can qualify if your fees are paid in full and only are needing a smog certificate.
  • Your car needs to be in good running order.
  • All original emission control devices need to be present and working properly. The kit uses some of these parts to function properly.
  • The car needs to have had a tune up in the last two months.
  • The car needs to have had its oil changed in the last 5,000 miles.
  • The cars needs to have a diagnostic smog test performed. This can be performed at any local smog shop. You need a copy of the test results at idle and 2500 rpm. The diagnostic smog test needs to show that:
    • The emission equipment is present and functioning
    • The hydrocarbons (HC) are below 300 ppm
    • The Carbon Monoxide (CO) is below 3.0 %

If your car has higher emission numbers than above, then ask your mechanic for an estimate to repair the defective components or adjust the carburetor. If that repair estimate is more than $150, we do not recommend that you spend money to qualify for the program. If you need a mechanic, the following mechanics are aware of the program:

Chiefs Regent
12462 Poway Rd.
Poway, CA
Contact: Bob at 748-7760

Doug's All Tune and Lube
3691 Via Mercado
La Mesa, CA
Contact: Doug at 660-1382

Rancho Unocal
11906 Campo Rd.
Spring Valley, CA
Contact: Dave or Cliff at 670-7601

Tony Van Auto Center
3859 43 rd St.
San Diego, CA
Contact: (619) 287-7046

Step 2. Applying to Neutronics

Send the following:

  • A copy of your car's registration
  • A copy of the diagnostic smog report
  • Contact Form (the bottom half of this sheet filled out)


Neutronics Enterprises, Inc.
11421 West Bernardo Court
San Diego, CA 92127
Attn: Retrofit Manager

Step 3. Neutronics' Approval

After reviewing your paperwork, Neutronics will contact you by phone to inform you whether or not you have been approved. If you are approved, we will forward a copy of your paper work to the shop indicated.

Step 4. Appointment with the Shop

You call the shop and make an appointment. You may go to any of the approved installers listed. However, the shop that your paperwork was sent to will be better prepared to service you. Approved installers:

Ed Hanson's Muffler Service
3916 N. Barcelona St.
Spring Valley, CA 91977 (619) 698-7030

Tony Van Auto Center
3859 43 rd. St.
San Diego, CA 92105
(619) 287-7046

Step 5. Taking the Car to the Shop

  • The installer will do a visual inspection and tail pipe test.
  • If the car meets the standards, the kit will be installed.
  • You will sign some paper work to receive the free kit.

Print this page and cut here. Send the bottom half to Neutronics along with a copy of the registration and diagnostic smog report.


Your Name: ___________________________________

Your Daytime Phone Number: _____________________

The following is a list of shops where retrofits are now being done. Please circle the name of the shop that would be most convenient for you should your vehicle be qualified for retrofitting.

Ed Hanson's Muffler Service
3916 N. Barcelona St.
Spring Valley, CA 91977
(619) 698-7030

Tony Van Auto Center
3859 43 rd. St.
San Diego, CA 92105
(619) 287-7046

Copyright 1999 Neutronics Enterprises, Inc.