Hey guys whats up I am buying the zz performance 3" header and was wondering what my gains will be and what i can expect from going with a catless downpipe vs. a highflow cat. Also will there be any drivability loss with no cat? I'm not worried about passing emmsions or haveing to computer block the o2 sensor. Thanks 4 your help.
PS can u guys see the dyno sheet in my sig?

 

go catless downpipe....IMO i think you will get more of a gain going that way , and a little more rumble

 

im curious 2 is catless going to be raspy......sound ricey at all?? Is it somthing you will enjoy the hear of with a good exhaust or would it tend to get annoying? Thanks

 

everyone ive talked to says nocat=rasp

 

id go with the cti header and downpipe

its pricey but there have been gains of up to 25hp plus

he will also make it so u can have it catless and when u take it in for warranty work or for emissions then u can put the cat on

 

might be kinda raspy depends on what mufflers you have it wont sound rice at all unless you have a cheap exhaust

 

i've already decided that is the header i'm buying people are out of their mind thinking i'm gonna pay 700+ for a header and downpipe it is simply not worth the extra 300 dollars for a proposed 5 more hp and zzperformance says you can gain anywhere from 15 to 35 w/o a cat.

 

I have a catless DP with a Magnaflow muffler. Not raspy at all. Has a ripping sound to it.

 

I've yet to see a dyno from ANY of those products... the only dyno I've seen of the full 3" CTI seutp, header, downpipe, and exhaust, have been minimal at best...

 

SPOONER!!!!!! your in the .net now!!!!!!!!!

 

do you have the 3" or the 2.5?

 

SCDyne header (2.5 collector)- 2.5 custom catless DP - stock exhaust except for the Magnaflow muffler and tip. (stock resonator)

 

Yeah, catless w/o resonator = ungodly amounts of rasp. with a resonator rasp is minimal.