Hey guys i im new to this. I have a 93 ej1 civic with a 94 gsr swap. Vtec isnt wantin to work. Its all wired right. I wired the solenoid separate and it clicks. I drove it and hit the switch and still nothing. Can anyone shed light on this. My oil is good, no leaks, i just dont know qhat could be wrong. Im throwing an o2 code but that shouldnt matter. I cleared it and still nothing. Any help is appreciated.

 

um you really should get an ECU that will run that engine properly instead of hacking it with a manual switch. I'm pretty sure the ECU changes fuel maps based on whether VTEC is engaged, or if the IAB butterflies are open (and also VTEC engaged). Are you running the stock dual-runner GSR intake manifold?

 

do you have gsr ecu?

 

hacked swaps

get the correct ECU and wire it properly don't hack in a switch.

 

Never hack an ECU... Vtec will not work if the imput numbers from the ecu are not correct. For instance if the ecu reads that the coolant temp is too low for vtec changeover then it will not allow Vtec to engage. If the computer does not see that you turned on Vtec with a "switch" then it will not alter the fuel mapping to compensate for Vtec. Hopefully i'm making a bit of since over here

 

hack job=no good

vtec has a seperate fuel map, and the gsr has dual intake runners (which really contributes the most to that tone change) otherwise youre running a big cam, on **** fuel maps. it wont make **** for power that way.


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have you ever hit VTEC at idle ? dat toda killer cam sound doe

 

I have a p72 in the car. Yes correct ecu. I wired the solenoid to make sure it worked i didnt hack it lol i figured out i had a vtec valve rocker pin missing ao i replaced it. My dowel on cam cap 3 was gon so i replaced it and same thing. No vtec. Im thinking ecu.

 

Why didnt you do it the legit way?Correct ecu, and harness with nooo switch...

 

It is done the right way! Correct harness p72 ect ect! I got it fixed. Thanks

 

Cool, what did you change?