that you have a cx ecu
Which is why you have a lower redline and your vtec will not work unless it was rigged to work off a switch or msd box.
If your cars converted to obd1 just get a p28 or you can have the p05 converted just talk to mtber.
^^^^^^
Nevermind he beat me to it...
Just unscrew the top and look at this area and if its like this its chipped