cant get over 4000 rpm!!! and no vtec

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ninjafoo

ninjafoo

New Member
its a cb7 accord with an h22 and f20bhead after swap cant go over 4000 rpm and definatly no vtec any suggestions and the ecu id a p28 w/ neptune base map
 
Have u had the wires ran to your computer for the v-tec. If not u have to run the V-tec solenoid wire which is green and yellow (one wire) to your computer. Use pin A4. V-tec oil pressure switch, light blue wire gets ran to (one wire) to pin d6. Then the black and red (one wire) gets grounded somewhere. Also if u have a knock sensor on your motor u need the prelude plug off of a harness and then u have to run the wire to pin d3. If u have already had this done then I really don't know what your problem could be.
 
f20b head on an H-series short block? Is that even possible? :confused:
 
yea the F20B and the H22A are the same engine with the exeption of the 2.2L on H22 and the 2.0 on the F20B everything interchangeable
 
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