HFC'S or Test pipes???
 

I've done my research and ready to but a set. But I don't know which way to go. I don't want a code. And don't know if I should risk running test pipes. Your input would gladly be appreciated.

HFC's are more conservative whereas TP's are more unsensored

comes down to personal preference, would you rather be legal,queiter,less likely to throw a CEL, or be loud,smelly (subjective), and have (slightly) more power

Get the ART pipes. Best of both worlds.

I'll look into them. I'm leaning towards a set of CNT resonated test pipes

I've tried both.

You'll get about the same HP/TQ gain from each, the rest is just a preference.

Test pipes
cost less $
stains on your rear bumper cover
more rasp (although some like this)
louder

HFC's
cost more $
the cores can be destroyed after some time
quieter, less rasp

converter revision
 

I have been hearing more and more about any type of converter breaking up and because of position being sucked back into the motor and causing some of the oil usage problems with the VQ engines from time to time, any thoughts?

Whaaaa? I've never heard of that.

I've heard of that happening to late model Sentras because Nissan decided to put a mini-cat on the exhaust manifold, literally inches from the combustion chamber.

I doubt that would be a problem on our cars, cats aren't that close.

never heard of this.

Go test pipes. And if you want quiet test pipes and dont mind spending more money go with the MotorDyne ART Test Pipes. HFC's are expensive and make less HP, yea its only a little but is less. There is still a restriction unlike the straight path of the TP's. As for your concern with the CEL. Fast Intentions Test Pipes are designed with an extended 02 sensor bung that is suppose to keep the CEL off but I have heard of cases of people still getting a CEL. Choice two, are you planning on getting the car UpReved Tuned?? If so the tuner who performs the tune can shut down the rear 02 sensors and trick the computer into thinking everything is a okay. Hope this helped.



P.S My rear bumper does not get stained but there is a smell of unburnt gas. But it like it. LOL

Burning all your gas is mean anyway, i prefer to leave some unburnt :yum:

I love that smell

me too, thats half the reason i bought em....they arrive on saturday...cant wait!

Ordering mine today as soon as they open up.

Personally, I don't think HFC's are worth it. Test pipes or just don't bother.