ok i just build my ls/vtec motor it has a b18a1 block with a gsr head and i just swapped it in my honda coupe last weekend. Everything starts and works fine but when i drove it around the corner to hear vtec, it had no torque or power once vtec opened out. Like you'll vtec crack loud at 4500 rpm but theres no whiplash/power at all. So its just loud for nothing. Does anyone know what the problem can be?