1995 Acura Integra Need desperate help.

I cut my antifreeze/heater hose by accident and it squirted out some of my coolant, I then had to drive it about 8 miles to the garage to put a new hose on and add coolant. Half way to the garage the car engine would shake whenever I would step on the gas, however it did not overheat on me. The new hose and coolant was added, the mechanic said I had lost 1/2 to 1 whole gallon of antifreeze my car holds 2 gallons. After having it fixed the car still shakes when I hit the gas and it has a hard to getting up to even 65 mph! My father said that I might have warped the head on my car because my Flowmaster cold air intake is letting in too much air but I told him that that couldn't be the problem because I've had the intake in for about 5 days now. Please help, any feedback would be greatly appreciated.