Quick question I have a G37S Coupe with Magnaflow Catback and a Stillen Gen 3 CAI. I was wondering if I would get a good HP gain from Stillen headers? And are they worth the money?

 

before i sold my g i was looking into them as well. Not worth it at all. they would of cost as much as my CBE. Plus the stock ones are a real pain in the butt, i wouldnt consider them if i were you. Save the cash, get hfc or testpipes

 

Get some test pipes and call it a day (it may get loud and raspy especially with a magnaflow CB)

 

so its a risk either way since i got magnaflow catback with the test pipes or the HFC?

 

No they are not worth the money from what others have said. Remember the cost of install cost around 3-400

 

oh alright how bout test pipes? do know if they will give any HP? or if they will have a rasp?