Hello! Some cobalt owners may want to stick with a shorty syle header, get a separate downpipe, and keep a cat. There are plenty of these out there, with several on the way. Some of us however, want more than that. I'm wanting a true, long-tube header. One that eliminates most of the downpipe too. Tuned length, tuned primaries, the 3+" collector should be under the car, with a 3" straight pipe to connect the collector to a cat-back. I would want a cat-less option as well. If I'm going to go to a header, it needs to be like that, stainless, and coated for a good look and for high temps. Power gains would be significant compared to what's out there now. Also, fitment needs to be perfect, with no leaking, and the flanges need to be nice and thick. Lastly, I think there should be a warranty. These type of headers exist for other cars, why not ours?
Is there any company out there who will make one for those of us who want to get a little more serious about going fast? I would do this style header along with a full 3" cat-back at the same time. Thanks in advance for any vendor's response (members, too).

 

weapon r offers a long tube header. check it out its like 700 but i found em on ebay for less than that.

 

I've seen it, and I believe the downpipe/collector is all 2.5". I'm wanting an all 3" setup. 3" downpipe/collector, 3" all the way out the muffler.

 

hit up jlewis... I think he's selling his... also cobalt-addiction is in the process of working on a new tuned header for us.... I'll keep a heads up on it... I"m waiting for it myself... they also have a 3" catback system and down pipes... and should have a full setup soon.

 

Thanks guys. I appreciate the help.

 

Vibrent has long tube.

 

That's honestly one that I've been waiting for. As far as I know, it's not done or out yet.

 

it necks down to 2.75" at a point i checked

 

is weapon r's header and equal length long tube or just a regular long tube race header?

 

why does everyone want 3" all the way? It's a power loss right away. No way your gaining anything except top end. You lose bottom end hard core on a setup like that.

 

I have too much bottom end as it is...and every 5" lsj dyno i seen it gained power everywhere

 

Same thing as Dan. If anything, I could stand to loose some power on the bottom end.

 

Because I'm going to get serious with cams, ported head, forged pistons, and possibly a bigger blower (hoping for a whipple). Who knows what I might end up doing? Also, I don't want a 3" downpipe to go into a 2.5" cat-back. You don't get even flow that way (if that makes sense ). Also, with these traction problems, it might not be a bad idea to move some of this power higher in the rpms.

 

You arent losing anything. You are just moving the greatest flow efficiency further up the rpm band. You will still see an improvement by using a tuned long tube header over a shorty or stock header.


When you are racing, where do you spend your time? do you spend in under 3k rpms, or over? If you spend it under then you need to shift later. A 3" exhaust on a supercharged car is great because it reaches it greatest flow efficiency, at higher rpms where you spend the most time while racing. A tuned header is fabulous for giving the best scavenging, and a larger primary will give that greatest improvement in the higher rpms.


And as was already stated. There is more than enough torque. you WILL see an improved torque output with a 3". It just wont be as great an improvement as a 2.5", but the 2.5" will suffer SOME higher up.


Its a falicy that backpressure is good. NO back pressure is ideal.


BC

 

I guess the point I am making is that your losing low end, mid-range and only gaining top end with an exhaust setup like that. Why would you want to sacrafice that just for a few extra HP?

No I do understand the concept of expelling the gases quicker but it's a 4-cylinder..

 

ZZP has a 3' downpipe exit dont they?

 

Our cars seem to spend the most time (through the 1/4 mile) above ~4500+rpms. It's not that I'll "lose" any low end, I might not gain anything more in the low end than what I have now. But I will gain more in the higher end, where we spend the most time anyway. If I could dyno back to back, I bet we'd see that on a modded car like mine, going to 3" probably wouldn't give up any low end torque/power. But it would make more up top. I've been debating this for a while, and Rob and I even talked to a CORSA rep at IDD. He said the reason they didn't develop a 3" exhaust is because we didn't need it. He said the 2.5" flowed just fine for this 2.0 liter engine. I won't be doing anything with my cat-back if we don't get a decent header.

 

I believe so, but that's still a shorty header. It's not tuned, the primaries aren't that big,etc. There's a reason it's a good price. The header I'm talking about is going to cost quite a bit.

 

If we didnt need it then why did Corsa desgin a 3' exhaust for the Time Attack car? and thats all low end around curves a crap. not saying your wrong or anything. but that dont make sense

 

Theres isnt out yet as I have been waiting for it to go with there exhaust system that I have.

 

I understand. I was just quoting what he said.

 

And it has a point where it necks down to 2.5 or 2.75"...I emailed vibrant and asked them about it...its there

 

Wow, I didn't know that. Thanks Dan

 

I am aware it does neck down as I have the exhaust on my car but for such a short section of pipe you wont see a difference. the only reason it does neck down though is to mate it to a stock cat.

 

a neck down is a flow restrction period...laws of phsics apply here...