Hey all. I just got the Pacesetter 4-1 header for my 05 Ecotec Sunfire, and am contemplating getting the full exhaust. My question is, with the stock exhaust setup for the Ecotecs, is a high-flow cat necessary for power gains??? And if so, which do you recommend for my car??? The downpipe is 2 1/4" I believe, so the proper sized catalytic converter would need to be the proper size. Any advice???
Currently #4 in Ecotec Forced Induction horsepower ratings. 505.8 WHP 414WTQ!!!
Currently 3rd quickest Ecotec on the .org - 10.949 @ 131.50 MPH!!!
Necessary as far as air flow, maybe...but I would do it to keep the same diameter as the rest of the exhaust system since you're getting a bigger size. If you didn't do it, it would somewhat be choking your exhaust and decrease your performance because of it.
www.kronosperformance.com / 732-742-8837
What Adam ^ said. I'd go ahead and pick up one from Magnaflow. The part number is 94035
I was a retard, and now I'm permanently banned.
I wouldn't waste my time or money doing a header without a matching hi flow cat. I am running the ps 4-1 and the 94035 cat. Get a resonator to.
2012 HD VRSCF
2010 Ford Explorer
2006 Ford Ranger
2004 Chevy Cavalier
I got the 4-1 pacesetter, high flow magnaflow cat, and magnaflow catback single and together it all works great, but after about 3 months my cat is clogged :-(
NJHK (That Black Guy) wrote:Necessary as far as air flow, maybe...but I would do it to keep the same diameter as the rest of the exhaust system since you're getting a bigger size. If you didn't do it, it would somewhat be choking your exhaust and decrease your performance because of it.
Agreed, if you're gonna add a header (and cat-back, I wouldn't add a header without doing the rest of the exhaust) you might as well match the cat size up with the rest of the exhaust.
'03 LS SPORT COUPE 5 SPEED black with teal/silver pinstripe
Are cats are hiflo anyways. If your just going to do 2.25" i'd just have cat pipe widened a little bit. Stock is like 2" anyways so it's not a bad stretch. Especially seeings how your car is so new and don't have to worry about a bad or failing cat.
OK, so the verdict is yes then.
A poster above mentioned the Magnaflow cat #94035. Where exactly is the best deal at for getting one of those???
Carbon Cavi wrote:I got the 4-1 pacesetter, high flow magnaflow cat, and magnaflow catback single and together it all works great, but after about 3 months my cat is clogged :-(
Great!!!!!!!!! That's exactly the setup I am going for on my car. How does it sound??? Are there any quality problems I need to worry about???
Currently #4 in Ecotec Forced Induction horsepower ratings. 505.8 WHP 414WTQ!!!
Currently 3rd quickest Ecotec on the .org - 10.949 @ 131.50 MPH!!!
Roofy wrote:OK, so the verdict is yes then. A poster above mentioned the Magnaflow cat #94035. Where exactly is the best deal at for getting one of those???
They are usually for around the same price...I'd just find a place that sells one and buy one.
www.kronosperformance.com / 732-742-8837
Mine was like $50 thru www.jegs.com A lot of places carry it tho. I am running almost exactly the same exhaust that carbon cavi is but mine is a rks catback and I have a big resonator.
2012 HD VRSCF
2010 Ford Explorer
2006 Ford Ranger
2004 Chevy Cavalier
