Hey all,
Which mod do you think gives the greater increase in HP hi-flow cats or a Plenum. Going to add one of these so for the mean time want the one that provides the greater gain
Thanks.....

 

You're looking at overall HP gains or more peaky gains?

 

I guess overall HP gains, but wouldnt they really come together??? Which mod would do what?
thanks

 

Well, based on my experience, the Plenum will increase HP more towards the 5K and above; whereas, the CATS allow more midrange and up. Both will complement each other well.

Your pick.

 

only thing stopping me from getting the plenum is that nissan said the warranty will be viod the second i put in the plenum and open the engine???

 

Hehehe, only if you left it on there when you take it in for warranty work . Besides, in the US, there's the Magnusson-Moss Act that says the dealer has to prove that the modification caused the damage prior to denying warranty work.

Don't know if you have something similar in Australia.

 

dude, your daughter is the cutest thing i ever saw.

 

Do the plenum first. It's still the best bang for the buck out there

Lou

 

Hehehe, thanks man. She is the love of my life right now

 

RT High Flow Cats will give you a HP Gain to the wheels across the full RPM range...

the current plenums give you some gains down low, and a little more peak HP gains...