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I HEARD THIS MIGHT NOT WORK FOR THE 03-04 CIVICS BECAUSE OF THE NEW COMPUTER TECHNOLOGIE AND HOW IT WILL REJECT THE SIGNALS GIVEN FROM THE DEVICE. I GOT A 03 IS THIS TRUE OR WILL IT WORK PROPERLY???

 
Rep Power: 811

It should be fine in terms of setting vtec engagement. The only issue was whether the ecu will adapt to air/fuel changes over time. Someone already dynoed with an 03 and gained 5whp after tuning. So they can be tuned, it's just a question of if they last. Have to get it dynoed again 6 months later maybe to check.

 
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I See Because Im Gettin A Head Swap.... Now I Heard Everything Will Bolt On To The Dx And All I Will Need Is A Head Gasket. Xproductionz Told Me It Will Be Fine And I Read His Diy, Do You Think This Is A Good Swap Or Change In The Engine? Thats Also Why I Need The Vafc To Turn The Vtec On.

 
Rep Power: 811

It should work, and is better/cheaper than a full engine swap for sure. He was even saying you'll feel the vtec more.

 
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sounds good ill keep u posted

 
Rep Power: 297

sweet!!