LS Vtec Swap, Vtec will not work,

ASSISTANCE Hybrids & Advanced Aftermarket Engine Performance
1

Hello, I just did a LS Vtec into my 1990 Integra GS…but my Vtec wont turn on. This is my set up,

  • B18A1 block
  • B16A head
  • Stock OBD0 LS Distributor
  • OBD0 PR3 ECU
My car hasn't had the O2 Sensor since ive bought the car. Will not having the O2 sensor cause it to not work? or do I need a B16/GSR distributor, or is it both? lol....Alot of my friends talk crap on me for doing LS vtec to my DA, cause they dont like them, but I believe in it. If anyone has any tips, or Ideas please let me know. Thanks!
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You definatly need the vtec distributor and I’m not sure on what ecu a pr3 is for but it needs to be a b16 ecu but for it to run like it supposed to you really need a ecu you can tune so I would get a chipped p28 and have someone tune it if I was you. Also adjustable cam gears would also male it that much better because hybrid timing is always a little bit off.

3

^ Ignore that.

You can run the non-vtec distributor if you modify it.
PR3 is the correct ECU. If you want to run a chipped p28 you’d need to convert to OBD1 (not a bad idea).

Are you throwing any codes? You should be if you don’t have an O2 sensor. Fix any codes you have, then see if vtec works and go from there.