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mr. honda

mpfi conversion issue

ok so i converted my D15b2 to mpfi and it starts and idle's fine the issue im having is that 1 im getting a code 14 for the IACV but i changed it out and i still have the code and 2 at any speed in any gear it act's like its hitting the rev limiter but only if i try to steady the throttle, if i speed up or slow down its fine other then the miss it seems to have on acceleration but on a steady throttle it "bounces" really bad.

ive changed out the ecu, dizzy, iacv, res box, and tested the tps.... ive redone the timing and it still has a "missing sound". ive rechecked and rechecked and rechecked the wiring but that all seems perfect

.   .   .   . HELP PLZ I NEED TO GET IT RUNNING BETTER SO I CAN SMOG IT
4dred6

Dont want to offend you. But did you switched the 2 outer wires on the tps. And what about the blue/green and blue/yellow wires from the dizzy
mr. honda

4dred6 wrote:
Dont want to offend you. But did you switched the 2 outer wires on the tps. And what about the blue/green and blue/yellow wires from the dizzy


yep I did switch them I even tried switching them back to make sure
4dred6

can u post a detail version of everything you did/use.  like parts, wiring.
mr. honda

I used a complete pm6 intake manifold, SI distributor, pm6 ecu, SI res box and I followed these instructions to the letter http://www.b20vtec.com/forums/tec...pfi-mpfi-conversion-diagrams.html
4dred6

i see.

let me talk to my cousin about it. he might know what is going on.
bac_ed36

Sounds like my old hb. On mine it was the iacv that was bad and had the same symptoms. Another thing you could check is the blue/green and blue/yellow wires to see if there in tie rite spot and completely inside the plug without the Ecu plugged in. Then plug it up again to the ecu and make sure the wires didn't come out while plugging the ecu. Lmk what happens.
mr. honda

bac_ed36 wrote:
Sounds like my old hb. On mine it was the iacv that was bad and had the same symptoms. Another thing you could check is the blue/green and blue/yellow wires to see if there in tie rite spot and completely inside the plug without the Ecu plugged in. Then plug it up again to the ecu and make sure the wires didn't come out while plugging the ecu. Lmk what happens.


no change
mr. honda

Still can't figure it out... just going to pull the motor and try again

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