problem solved Vtec problem

jonja · Post by **jonja** » Sun Apr 14, 2013 7:07 pm

I have an problem, i had h22a5 engine and it was chiped, and i changed engine to h22a (jdm) and i didnt rechip it and i have problem, on h22a5 when vtec kicks in it felt like a rocket but now on this h22a when vtec kicks in i dont realy feel much power

what could be a problem? Maybe i just need to rechip it?

Because sound changes when vtec goes on but it dont work like previous engine

jonja · Post by **jonja** » Sun Apr 14, 2013 7:24 pm

Ecu is chiped with p28, injectors are 345cc , i think stock distrubutor

Vtec kicks in at 4500 rpm same like previous engine , maybe difference is that the mehanics conected ecu to OBC2 (5gens) cause i have wires for OBC1 (4gen) and could it cause that problem?

I have no idea what year h22a is, but it was from 4gen

Dunno if i you can understand me

ziyaan · Post by **ziyaan** » Sun Apr 14, 2013 7:35 pm

its probably becuase no chip.

injectors and dizzy shouldnt make a difference if you only swapped the engine.

plus i know that engine and i know its got it where it counts.

ziyaan · Post by **ziyaan** » Sun Apr 14, 2013 7:38 pm

that engine was originally in a J reg 4th gen and then i put it in my 5th gen.

maybe you should change the spark plugs,

i had iridium in them, check the gaps are right

littlefeller · Post by **littlefeller** » Sun Apr 14, 2013 8:07 pm

i thought if you use a jdm h22a you need the p13 ecu as the motor has a knock sensor so maybe vtec isnt coming on at all

ziyaan · Post by **ziyaan** » Sun Apr 14, 2013 10:38 pm

no, you need the knock sensor if you use the jdm ecu otherwise the jdm engine will plug into the edm plugs and that sensor is off.

no vtec? i thought he said he has it. he can hear it.

can you rev above 6500? if so then you got vtec crossover.

jonja · Post by **jonja** » Mon Apr 15, 2013 12:27 am

I can rew it to 8,5k

Spark plugs are alright ihadthem in my h22a5

I hear vtec but i dont feel power from it

jonja · Post by **jonja** » Mon Apr 15, 2013 11:15 am

Bump

Post by **indigolemon** » Mon Apr 15, 2013 11:28 am

It might not actually be a problem - my understanding is that if things are setup right, your crossover should be fairly smooth. You say you hear it, does the car pull harder?

jonja · Post by **jonja** » Mon Apr 15, 2013 11:46 am

Maybe just a bit, with h22a5 it was like second breath, it was pulling much better

So maybe i need to rechip it since engine is different?