I recently changed my spark plugs off my SE. I got NGK BR8EQ14 from racing beat. When i started it, the exhaust and the sound of the car is different and the throttle response lagged more. I have a 45 DCOE carb and ran 6 PSI. At high rpm i would hear a noise behind the firewall it would get it would get louder at higher rpm.
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Anyone ever had problems after changing their spark plugs?
MSDS? COILS? IGNITION

 

Only when I accidentally screwed up my firing order! Check the cap and make sure T1 actually goes to the trailing spark plug on the front rotor housing. And so on.

 

oh their on right. i have them labeled

 

are the wires pressed on all the way?

 

Can you be more specific? I had those exact same plugs but I swapped them the other day for a set that burn a stage hotter. I didn't have any issues with them however.

 

Have you tried putting the old plugs back in?

If your wires aren't miss matched and the only thing you changed is the plugs; re-installing the old plugs will make the car run like nothing had happened.