What type of Header is the best|||

[Subghetto]

My friend said that for automatics a 4-2-1 is better and for manuals the way to go is a 4-1 since they don't need any bottom end power. Is this true?

 

[twilightprotege]

not true....unless your friend was referring to an engine that revs to 9000rpm +

the fact of the matter is that 4-1 headers are designed purely for very high rpm power. the 2.0L cant get high enough to get the benefits out of a 4-1.

put simply, a 4-2-1 header is the best for a street driven car. it's all about area under the torque/hp curve

 

[ogsp5]

I agree with twilight our engines do not rev that high for the exhaust pulses to clear. A 4-2-1 is the best, and if possible 2pc for ease of install.

 

[iluvmacs]

If someone was trying to make power between 5000 and redline, which would be better? It's based on primary size and length from the head to the collector. I guess flow numbers for the headers would be needed to be absolutely correct.

 

[no1stunna]

so what kind of car would rev above 9k to get the benifits of a 4-1 header. and the way i look at it, our cars are so slow anyways, does it matter which header you use, neither one is going to help out a ton, so just get one that looks good!

 

[twilightprotege]

no1stunna - honda's.

macs - yep true. but to get the 4-1 primaries the right length for our cars will cost development money. would be cheaper just to buy what already works well - the awr

 

[Auzzie_Mp3]

Im looking at buying a new header for my car, 01 mp3 and i was probbaly just going to go with the HP racing header, i mean its the cheapest ive looked at so far...im just asking any mp3 owners who have a header installed on their ride...how hard was it to install it? how much did it cost? did you notice a gain? im just shopiing around and im open for ideas... thanks guys

 

[hi-perf]

sometimes cheap doesnt always mean better.

i myself, am going with a racing mazda header passed down to me.

 

[P54DRIDE]

with these headers we will still throw a check engine light, right? are there any headers that won't?

 

[Mike R]

with these headers we will still throw a check engine light, right? are there any headers that won't?

Wagner, Essential Speed(shortie) Niether should throw a CEL. You can use any of the headers and get a CEL eliminator, except with the Wagner and Essential, which keep all cats and O2 sensors.

 

[SilentSno]

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=2470618471&category=33631


I did a search, but no avail info on these boards about them. Anyone have any info about them?

 

[ogsp5]

Just got a picture of the new 4-2-1 header from Kevin. This a 2pc type with high flow cat. It is s.s and coated for around $750 CAN or approx $525 US. That is cheaper than the AWR which is now selling for over $550. Guess who is going to get my money|

 

[Warpath]

ogsp5:

Any more information regarding the header/ high flow cat combo? This is precisely what I'm looking for. Thanks.

Rigo

 

[Subghetto]

ogsp5:

Any more information regarding the header/ high flow cat combo? This is precisely what I'm looking for. Thanks.

Rigo

you can go with the wangermotorsports set up they have a header and a hi-flow cat combo.

 

[ogsp5]

Het Warpath, if you e-mail Kevin at essential speed he can send you a picture of the header. It is not completed yet (coated and polished) but gives you an idea of how it looks. I think he makes his own cats. I quoted wrong price, the header works out to be $562 US plus shipping. That is the same price as the AWR, but you get more bang for your buck (high flow cat, and coated) from Kevin

 

[gino]

Wanted to post this lift from Protege Club thread on same topic.

It's recommended reading for anyone considering header/exhaust system changes. Excellent info.

 

[Iconoclast]

can any you cats put up the websites for a bro?
were i can get one that is

 

[twilightprotege]

cheap cats = ebay

 

[iluvmacs]

Essential speed equal length header

Mazda Protege 5-2.0L :equal length header
equal length design retains the stock cats for emission passable direct bolt on to existing first cat. has proved to gain 8-10 whp with an increase of 20ft/lbs of torque.A bonus..moves the power band 700rpms lower!! ceramic coated and polished

How can you gain horsepower when the revs are shifted lower? This doesn't seem like a "performance" enhancement, even though the torque is increased.

Any ideas?

 

[twilightprotege]

probably would be better because the area under the curve has increased

but i doubt the 20ft/lbs claim. very much doubt