So far all I have is a CAI, which kicks in around 3000 rpm. I'm also am looking to get an exhaust header, and eventually, upgrade the rest of the exhaust system. I've heard that the headers "power" kicks in around the same range as the CAI, 3000 rpm. I'm looking for something to help out that low end range (1200 - 2000) so that I don't feel so sluggish off the line. Any suggestions?
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4-2-1 hearder, that'll get you low end, plus dont go over 2.25" for a cat-back if you plan on going n/a.
and a short ram intake.
Fact 1:
“Facts are meaningless. You could use facts to prove anything that’s even remotely
true.
But a short ram is noticable power wise at a lower RPM, Mine for instance kicks in around 2K.
Fact 1:
“Facts are meaningless. You could use facts to prove anything that’s even remotely
true.
nawz
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Quote:
Originally posted by MSD
I have an 03 5-speed Cavy, and when I race.. I shift at 6300-6500. That method (coupled with the fact that the guy probably couldn't drive for @!#$) allowed me to keep up with/have a slight lead on an 04 Mustang GT.
crackajax wrote: dont go over 2.25" for a cat-back if you plan on going n/a.
There has been 1000's of post about how even a 3" cat back wont make you loose any power any where.... I have seen this in person on a buddys car.. he had a 3" cat back made up and he didn't loose any power at all !!!. it is just amazingly loud (thats what made him take it off and get a 2.5")... i would say go with a 2.5" cat back and you will be happy, and if you go with boost in the long run you will still be fine. And go to an exhaust shop and get one bent up from them. its like $200 if you have the muffler and just tell them to bend up the pipes compared to the $500+ for a brand name one that does the same.
didnt lose power compared to what? the stock exhaust?
if he had the right size it would be more power
Freebs wrote:crackajax wrote: dont go over 2.25" for a cat-back if you plan on going n/a.
There has been 1000's of post about how even a 3" cat back wont make you loose any power any where.... I have seen this in person on a buddys car.. he had a 3" cat back made up and he didn't loose any power at all !!!. it is just amazingly loud (thats what made him take it off and get a 2.5")... i would say go with a 2.5" cat back and you will be happy, and if you go with boost in the long run you will still be fine. And go to an exhaust shop and get one bent up from them. its like $200 if you have the muffler and just tell them to bend up the pipes compared to the $500+ for a brand name one that does the same.
look, im tired of people saying this. Its a known fact that you loose low end with a bigger exhaust. You might gain power in the top with a bigger exhaust, but you will loose your low end. He wants low end, not top end. Read the mother@!#$in post.
I want low end back so much. I'm going to put my stock header back on.
Torque is way cooler than horsepower, thats why i want a 4-2-1 header and a shorter intake now.
vtech power wrote:nawz
just in case anyone takes his post seriously.... DO NOT use nitrous for low end power, you shouldn't even spray till around 3500+
Thanks guys. Keep the posts coming.
As for the header giving low end.. I read in another post that a header was more mid-range, but they may have been talking about 4-1 only? I know the pacesetter headers are good, they make a 4-2-1 dont they?
Oh and Darkstars, yes I know nitrous is not for low end =P
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Pacesetter only makes a 4-1 header, so you cant use them. I have a pacesetter, its a good header and all, but i would rather gain in low end. Weapon r makes a 4-2-1 design, i was thinking about getting that.
ALOT of people with the weapon R header aren't happy with it, honestly your best bet for a header is to wait for the DC sport... it 4-1 header but its supossed to be better then everythign thats out
well, im an auto, and i think i would perform better with a 4-2-1 since it give more low end. When i bought the pacesetter, i pretty much just went for the cheapest one i could find. njs honda killa said he like his weapon r, so i think i'll go for it.
crackajax - Show me proof that you loose low end power with a 2.5" exhaust.... every single person i have talked to has told me i would not loose power in the low or high end range with a 2.5" exhaust on a N/A engine. I even checked this with my old man who has been working on cars since he was 16 years old and has rebuilt many engines, and he to said i would not loose any low end power going with a 2.5" exhaust on my 2.4L engine. And if you want to question him, here is his web page
Cardomain go question him all you want. The fact is on a 2.4L engine you wont loose any low end power. And by all means if you can prove to me that you do, i will take back every thing i have said. But this exact thing has been talked about to death on this site and it has been proven on one of the post with a dyno sheet or somthing that you do not loose any low power.
Look at this dyno proof that you lose low end power:
Note that gain in torque is a LOSS of low end power. Im sure the top end gain is a LOSS as well. Its been proven that for 2.4L and bigger 2.5" is the optimal size for an n/a setup.
btw:
blue = stock
red = 2.25
green = 2.5
i guess the laws of physics dont apply to our cars then. Last time i checked torque = force * distance. Smaller pipes will cause more force on the air because the air doesnt have as much room to spread out. Smaller pipes will give more torque because there is more force on the air. Is it always better to use smaller pipes, no. Sometimes the motors can be opened up more because there is a lot of air going through and you benefit in the powerband, but he asked for low end power and i gave him the correct answer. I dont give a @!#$ what your dyno reading said.
RK Sport makes a 4-2-1 header for eco's as well. Anyone heard anything about that one? I've heard their cat back isn't that great, but heard nothing about their header.
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i really havent heard anything about rk's header, but look at the prices $450 for rk, $280 for weapon r. I would go for weapon r just based on that. I doubt one would perform a lot better than the other.
*wishes there was an edit button*
The info on the RK Sport header keeps talking about mid-range power as well, but says that 4-1 headers offer high end (5500 rpm). Anyways, I'm not too fond of the $450 pricetag on the RK 4-2-1 header. The $250 tag on the pacesetter 4-1 is a LOT more in my range.
So yeah.. is there anything other than a header that will give me low end? This thread got kinda "one-tracked" =P
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you can gain torque by more displacement, longer stroke piston, you can get cams designed for low end, and there are always motor mounts which will free up a little in the low end.
