1997 Gsr with b16a1 pistons.

A little background, i spun a bearing and rebuilt the motor myself (with help of buddies) and reversed the tps / map sensor plugs. I turned it on a few times with the terminals reversed but never put an load on the car.

After switching the sensor plugs the car runs fine. It's got about 500 miles on the newly rebuilt motor but there's 1 problem: a p0328 i think (i forget the actuall code number but it's the knock sensor malfunction code). If you guys need the actual code, i'll grab it with a scanner.

Now i've swapped it with a working knock sensor and it still throws the code. The car runs fine, just no vtec with the code on.

Does anyone know what the problem could possibly be or know how to check if it's a wiring issue? I'm pretty lost as to how to go about this.

Thanks.