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EFIE  |  Dual O2
DIY Dual O2 Sensor U-Solder Kit (EFIE) DIY Dual O2 Sensor U-Solder Kit (EFIE)
The "Do It Yourself"  Dual O2 Sensor Fuel Saver Circuit "

This circuit uses one LM324, a Quad Amplifier. This circuit uses 2 amps per O2 sensor, so it will work to adjust two O2 sensors. You can use it for a OBD II car 96 and on. One side adjusts the PRE cat. O2 sensor and the 2nd one adjusts the POST cat. O2 sensor. You can also use just one side of the circuit for a OBD I vechicle 87-95.
PRICE: $35.00
DIY Dual O2 Sensor WIRE Kit DIY Dual O2 Sensor WIRE Kit
The designer of the DIY Dual O2 circuit recommends shelided wire, grounded to one side only. It is hard to find single cond. shellded wire.  We are selling  22 gauge copper stranded wire and sheilded wire.
PRICE: $12.00
DIY Dual O2 Sensor pcb board DIY Dual O2 Sensor pcb board
"Do It Yourself" Dual O2 Sensor Fuel Saver Circuit Board

Easy to solder up, parts list is here.

We also sell this circuit as a U-Solder Kit, comes with all the compontents listed above.
PRICE: $8.00
Oxygen Spacer Oxygen Spacer
O2 Sensor Spacer , 18mm universal thread size will fit 95% of all car makes and models. This spacer will extend your O2 sensor out of the way of the exhaust stream. It backs it out of the way. This item is illegal to install, we want you to know before we sell you this part. It helps with OBD I cars (87' to 95) If your O2 check engine still comes on after using an EFIE, try one of these. The added metal around your O2 sensor, actually helps heat up the sensor and stay hot. (more metal)
PRICE: $12.00
EFIE  |  18/1
EFIE  18/1 Fuel Enhancer EFIE 18/1 Fuel Enhancer
The 18/1 Fuel Enhancer (EFIE) A new improved EFIE using modern micro electronics. Designed by a electronic wizard friend. Guaranteed to work as described or your money back. (Comes pre-assembled, no soldering) MADE IN USA
PRICE: $45.00
Oxygen Spacer Oxygen Spacer
O2 Sensor Spacer , 18mm universal thread size will fit 95% of all car makes and models. This spacer will extend your O2 sensor out of the way of the exhaust stream. It backs it out of the way. This item is illegal to install, we want you to know before we sell you this part. It helps with OBD I cars (87' to 95) If your O2 check engine still comes on after using an EFIE, try one of these. The added metal around your O2 sensor, actually helps heat up the sensor and stay hot. (more metal)
PRICE: $12.00
EFIE  |  D EFIE
D EFIE D EFIE
Digital Universal EFIE - MAP/MAF/O2 EFIE - D•EFIE
This circuit is universal, it can be a O2 sensor signal enhancer or EFIE.
It can also be a MAP/or MAF  adjuster. Fuel enhancers that allow a lean
burn, if you so desire. Comes with small black plastic box and full down-loadable instructions.
(Click on the circuit to read more about the D•EFIE)

PRICE: $52.00
Oxygen Spacer Oxygen Spacer
O2 Sensor Spacer , 18mm universal thread size will fit 95% of all car makes and models. This spacer will extend your O2 sensor out of the way of the exhaust stream. It backs it out of the way. This item is illegal to install, we want you to know before we sell you this part. It helps with OBD I cars (87' to 95) If your O2 check engine still comes on after using an EFIE, try one of these. The added metal around your O2 sensor, actually helps heat up the sensor and stay hot. (more metal)
PRICE: $12.00

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