Dpfi to mpfi

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Drivetrain DIYs Anything that involves the performance of the vehicle. Thread Tools. Other obvious parts that need replacing i. The first one is the crank angle sensor wiring which is the easy part. The second one is the fuel injector wiring which is slightly more complicated.

Dpfi to mpfi

Log in. Sign up. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. The stock dpfi connector has 14 pins and the crx si connector has 8 pins so im just wondering what i should do. Sort by Oldest first Oldest first Newest first Most reactions. I have performed this swap, i'll try to explain everything the best i can. You will have some unused clips as well as the dpfi manifold had extra sensors. The tps outer two wires need to be swapped because the tps on the mpfi throttle body moves a different direction than the dpfi tps. I'll find you a diagram for wire locations. You also need to tap into the injector power and intercept it with the resistor box, then run each of the four wires coming out of the resistor box to the other injector wires.

At the junkyard I found a box from an Si so I took that and cut the harness off of it and painted it flat black. This is the Throttle Position Sensor. Tiny screwdriver one that comes in an eyeglasses repair kit available at your local Walgreens, etc, dpfi to mpfi.

You've stumbled upon a great horsepower swap if you've got a base model Civic or CRX. If you are not mechanically able, I wouldn't suggest doing this swap but it is pretty straight forward once you read over how it is done. You are going from 2 injectors that is almost like simple carbeuration to 4 injectors which is like 4 injectors. Now this swap is great if you want to spend little money and gain some hidden horsepower. The engine wiring harness will make wiring so much easier if you get the complete harness.

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Dpfi to mpfi

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Draw sonic

Now when dealing with cutting I will refer to the side of the wire coming from the interior harness as the harness side, and I will refer to the side of the wire coming directly from the ECU's plug direct ECU connection as the ECU side the only plug in question for this step is the ones that go into the ECU. Send a private message to 92egvx. Quote message in reply? In the off chance that you get one, check the little light on the ECU for codes to see what the problem is. Find More Posts by jlk You can open up the engine harness at this location by cutting the tape that is around the black plastic wire looming the looming is split from one end to the other and slipping the wires into the looming and retaping it. So if you have that problem you know you skipped this step. So I added one right there The wire colors are Yellow with Green stripe and Black. This completes the wiring changes to the engine harness itself and is all you can do until the engine is in the car. If you read the instructions carefully, technically you wouldn't need to run a wire from each right side of the injector plug if you have the whole harness intact. Top Contributors this Month View All.

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For the Honda Civic and some previous Civics there were two types of fuel injection. If you have wires there depin them and pull them out. Above is a picture of the ECU Plugs and how you should look at them. You can remove the bracket that is already there because the injector resistor box has a bracket on it that you can put it on. Black box under rear deck of LX? MPFI Swap. Received 2 Likes on 2 Posts. Send a private message to grandtheftauto. You may have to register before you can post: click the register link above to proceed. It had 1 dedicated fuel injector for each cylinder so 4 for a 4 cylinder. View Public Profile. The stock dpfi connector has 14 pins and the crx si connector has 8 pins so im just wondering what i should do. Possibly with pictures? Now you can start with the rest of the wiring and this is where you will thank me for getting the entire Si wiring harness. The box transfers the high impedance current the DX has and turns it into the low impedance needed for OBD-0 injectors.