A gasket leaking will cause this noise. Did you torque to the right specs and in the right sequence then retorque after 3 heat cycles.
the ticking noise is a small exhaust leak close to the exhaust headers or exhaust pipe near the engine.
NO!!!
Waht is the answer?
It does depend on the engine, but I'd shoot a little higher and say headers will give a good 15-30 hp 3 or 4 hp depending on the engine
It is recommended to remap most engines after installing performance parts. The benefit of remapping is getting the full benefit of the new exhaust headers.
if you have EFI engine, replace your stock intake, headers, exhaust. installing racing filters improves air intake which can add power to your engine. replacing your stock headers and exhaust pipes with custom headers and mufflers can eliminate back pressure. doing this upgrade can give you additional 10 - 20 HP.
Engine specific. T he headers need to bolt onto the exhaust ports on the engine so regardless of the car the engine must be the same
Where is th ticking coming from?? The engine, the tires, the trunk????
What else is going on? Do you have power to the lights, horn, other accessories? Installing headers involves getting "up close and personal" with the starter electrical connections. Perhaps a wire has been damaged. Make sure all connections to the starter are intact. Remember that headers have earned a reputation as "wire burners", and the reputation is well disserved.
The fuel injectors make the ticking noise you hear at startup, especially when the engine is cold (colder temperatures).
usually
What engine and car they were designed to fit.