have you dyno'd with A/F ratio?... you might be surprised... Also, some intakes & exhaust flow better than others... running lean after mods is actually a good thing, it means the mods are working - but you won't see full gains until you add fuel, by way of a tune.

 

excuse me....) but what does HFC mean? And will i get more power with this stuff without no ECU program?

 

HFC= High Flow Cats. You may or may not get more power, but doing bolt on mods I would expect you to lose power or go to lean. If your gonna add exhausts, headers, or HFC I would strongly recommend you to get your car tuned. If you cant find a shop to tune it, send in your ECU to Technosquare or someother place and tell em the mods you did. THey will send back a flashed ECU and that should be fine. Although a tuned car is better then a Flashed ECU since all cars are different.

 

custom tune>generic tune>no tune

 

To make my car louder, may i remove only banks? Couse removing all exhaust is not effective for power (HR engine) and very expensive... And where can i get these banks?

 

To make my car louder, may i remove only banks? Couse removing all exhaust is not effective for power (HR engine) and very expensive... And where can i get these banks?

 

what are banks?

 

last pipe of exhaust (near to rear) )))

 

The muffler?

 

yes, where can i get it? )

 

If you want to make the car louder and have more power but without replacing the whole exhaust sytem, you should look into getting HFC's. THMotorsports may be selling FI HFC's so pm him about it.