hey, guys.
my friend just put on the header for me on today.
but i find something interesting.
the diameter of stock pipe is bigger than top speed pipe.
im wondering how come it increase power if its smaller?
Printable View
hey, guys.
my friend just put on the header for me on today.
but i find something interesting.
the diameter of stock pipe is bigger than top speed pipe.
im wondering how come it increase power if its smaller?
cuz the design i guess 4-1 deliver power at high rpm 4-2-1 deliver power at low n mid range rpm
was it easy to install?
gets more power because of tuned length runners...
doesnt get as much top end power as TODA because of the smaller pipe...
Looking at the top speed primaries, I am still not convinced that it is a tuned length header.... One of the pipes is EXTRA long. If it was tuned length, it is tuned length for a particular RPM only.
lol one runner extra long lol :thumbdwn: <--- for extra poW@ ROFLMAO!!
but in the end, its got a smoother runner curvature (how do you spell it rofl) rather than hard angled ones like the stock.
basically yes you guys are right.
Ive had mine in for a year. Its an exact replica of a DC sport header but stainless steel and welded together really good. It has the crappy flex pipe but mines holding up.
The exit pipe diameter is smaller than stock by but it has 2 pipes not one big one. But ultimately I agree that it probably only lets the same amount of air out the stock header. That being said its much smoother and much less restrictive than the POS stock header.
So I think that swhy my dynos showing more mid range, that and my jtune 5000rpm vtec. Makes the car easier to drive,but doesnt have ultimate max powa due to my tight arseness not ponying up for the toda.
justin they are so beautiful!!!
*sob*
Those headers are a work of art
toda FTW but too bad i aint got that money :( :D
no, i dont think so, cuz i spend a few hours for that.
i have some problem with the sensor when i install it.
the header is fit, but the sensor does not.
so my friend made some modi for the sensor.
and after i install it, i can heard some sound when i push the gas hardly and it doesnt happened when i have stock header on.
im not sure its right or not, but my friend told me it should be fine.
the header itself doesnt leaking, and i cant find out where is the sound from.
does anyone has this kind of experience?
if u realy want to know whats it looks like.
according to my friend "it just like a pain in the ass, u cant reach it or stop it, the only way u can do is deal with it"
is the sound that you are mentioning a "hissing" sound?
if so it's from the flexpipe, dcsports headers got that hissing as well.
if its a "hiss" kinda sound when lightly accelerating, as said above its flexi pipe hiss.. welcome to the world of after market headers :thumbsup:
nothing to worry about, completely normal :)
lol my exhaust sounds like stock but amplified a couple of times more.
As you can see the topspeed is 2 smaller pipes, not one large one like OEM. I would guess that the total flow is a bit higher, and a lot smoother an OEM. I stand by my comments earlier that this header gives a definite improvement in the low-midrange. But not a lot top end. But for the money, about $320 is a friggin bargain.
http://img521.imageshack.us/img521/5...theaderrh3.jpg
The design is 4-2-1. Its very well put together for such a cheap header. Stainless steel and welded together good. Flex pipe is crap but mine hasnt failed. I forgot to tighten my header and 12 months since I installed it was a bit loud and i got a dyno done which i thought was a smidge low. So I took it to honda and yep! Leaking like a mofo! Check your header after 3 weeks not 52 weeks! More mods then i redyno...
http://img513.imageshack.us/img513/9080/topvz5.jpg
Mine hisses a tiny bit. A LOT LESS after I tightened my loose header!
Im changing my flex pipe soon. Its not failing, i just want a proper quality one.
I dont know who's going to do it. I was going to rock up at my local exhaust place and get a quote and see if they are professionals or now.
Arent you in syd?
^ Cool let me know when you guys are getting your flex pipes!
Would i be correct to be going for the 2" x 6" double braided? :D
Im in Sydney so considering getting it done by Westside mufflers since they have good rep.
Can anyone who gets one of these Top Speed units next ( make sure you dont get the OBX one its difference and crap) measure the diameter of the final single pipe. The one that goes into the cat. I want to check it against stock. I think its 2 inch.
ask him if he can get 5zigen race headers.
so, u mean i keep the stock catback? does the catback increase power?
i have the same idea as well. cuz catback cost me too much to spend.
i just decide get injen intake and header.
but the "hissing" looks so strange. i think i need time to used to it.
should i change to other header if i have chance?
The increase power from cat back is minimal. The catback on the stock CL9 is optimal. Change your cat, that will give u some more gains. Go either magnaflow or rt cat :D
To get rid of the hissing, change the flex pipe. It doesnt cost that much. Im waiting for my topspeed header to arrive as well. Im just gonna change the flex pipe straight away to avoid any complications or issues with hissing.
Swap the flex pipe to a 2" x 6" double braided flex pipe as mentioned by Tony.
Im not sure where to source it from. Tried ebay but not much success. Anyone know?
is it possible to modified ( enlarged ) the flex pipe ? to 2.25" piping and enlarge the pipe aswell if u know wad i mean ?
Now that I have been back on my stock headers, I have to say that I do miss the Topspeed header. That gave good midrange. :(
aaron, whats the news with getting your topspeed fixed?
If your car is getting the flexpipe chopped off and then rewelded with double braided pipe then i think it would need to be taken out.
IMO my 2c (not worth much) but i think they would have measured the distance to the topspeed headers from where they cut it off to the flange>cat and they make sure your double braided flexpipe will be the same length to suit.
Reweld whilst it is off the car and then reinstall it back on. :p
Well once i get my Topspeed header next week, i will change the flex pipe straight away. Not gonna mess around with the problematic flex pipe that appears to come with the topspeed and dc.
I called performance exhaust(/or mufflers?) at northmead and they quoted me $110 flex pipe plus weld i think.
I'll let you guys know afterwards when its done if any of you are interested ;)
Yeh i think you would need the headers on. I think they might need to adjust the length of the flex pipe in order for the length to be consistent to stock i would assume.
But anyhow, I will let you guys know if i can find out when i get mine installed.
Looks like it'll have to wait til next sat then. :(
It really begs the question of why upgrade the cat back from the stock 57mm pipes to anything bigger doesn't it...
Yeah. Id like a bit of a note to the exhaust! probably worth if after a few mods also with a bit of extra air flow eh?
Are the J's racing headers straight bolt on?
and how are they compared to Toda?
think both toda/j's racing and 5zigen headers needs to have cat made to suit.
yeh part of the top range quality stuff.
don't know too much but i reckon on par headers would be maximworks/toda/j's racing/5zigen.<--- as these brands of headers were designed for track
J's racing headers have no flange to bolt up to the cat. So you will have to weld on a flange. Also, it does not have a pre-cat O2 sensor port, so you will have to have one done up either in the header (which I don't think is a good idea) or on the aftermarket cat side.
So all JDM racing headers for the EuroR need to have shorter cats, because the headers were designed for the CL7 K20A.
I got my header back with a new double braided flex pipe. :p
does it look better?
does it sound different?
Yup, under warranty, which is why I bought Xforce rather than Topspeed, eventhough they are the same thing.
I got it done under warranty, so I can't advise on price. I will report back this Saturday on whether the ringing sound, which I suspect comes from the accordion flex pipe, is eliminated.
for comparisons sake... this is what the maxim works header looks like (I wish i never installed this on the car and hung it on the wall instead)
http://img403.imageshack.us/img403/9...xim59zyhm1.jpg
http://img184.imageshack.us/img184/4...xim47osrk5.jpg
http://img201.imageshack.us/img201/2...xim17yxvv1.jpg
http://img20.imageshack.us/img20/7451/maxim61oull3.jpg
yes this things hisses like a dungeon full of angry snakes... and I love it
That header above is more art to me than a machine part. Truly amazing.
What header you got aarrong? Not the topspeed?
nice reckon it's got a better design than the others.
aaron has the Xforce (rebranded top speed) so his got warranty for it.
Curik, a member here got his flex pipe replaced by Racing Projects in Mitcham (Melb) for only 60 bucks.
I got my cat and topspeed header installed today and also got the flex pipe replaced.
There is this annoying "rattle-like" sound when i accelerate hard. It kinda sounds like a leaf is trapped and rattling.
Is that normal? It doesnt sound like its a whistling sound at all. The guy at the exhaust shop told me its because there is increased flow to the stock catback which is what causes the sound. Is that true, or was there something wrong with the install?\
BTW. when not in "D", reving the engine produces no rattling sound...im confused :s
^ thanks Aaron.
But dang what a disappointment. Engine response was awesome after the install. The only drawback is the rattle sound that occurs with increased throttle....arghhh!!
Could it be that he didnt replace it with a double braided flex pipe?? Or maybe should I give it a few weeks for the parts to adapt?
I will record the sound if possible later tonight :(
EDIT --> Could not record the sound. I will give them a call to see whether it could be the flex pipe. Car is alot more responsive tho :)
i have the same sound as well.
the guy at work shop told me there isnt any leak. i think u just need use to it. :p
i decide change to injen intake and see if there is any different.
but i feel the car become slower after i put topspeed on.
am i feel wrong or it is normal.
the car doesnt have much response at low range.
also, the guy told me, maybe i need replace the cat and intake as well.
so, right now, i just try to use to it. :(
so, do i still change to injen or not?
cuz i heard injen intake gives better air flow, but im not sure what happened when work with topspeed header?
so, what my will looks like when i done my injen + topspeed?
do i need go to dyno and adjust my ecu?
cuz im not sure i will stay with topspeed forever, i may change back to stock or other brand later.
I have comptech icebox, topspeed headers and magnaflow cat...
The sound isnt like the whistle that most ppl with dc and topspeed headers complain about. The person who installed my parts will have another look sometime next week to look for weaknesses in the weld and play around with the flex pipe.
Performance wise, there was definitely better response down low but the "leaf-rattle" like noise is my only complaint at the moment.
Injen u will lose some power down low but the sound from the injen at higher revs might camouflage the sound from ur headers.
did you make a CAI pipe to your SRI?
that could be why and was just heatsoaked.
Cause when i just had pure SRI with nothing feeding to it i found that it struggled in extreme weather like how we have now 30deg above.
Another thing that can help the SRI is the box it up as the engine bay heat would be restricted from the pod. <--- yet to do
Also alot of people like the CAI sound compared to the SRI as SRI sound really rough like a rocket. CAI sounds really smooth with a slight blow off sound from sucking in air.
nope i just had stock air thingo then i bought SRI off net and got it installed, and now i feel like it has a loss of response in the lower revs.. like if i WOT there is like a lag before it gets up :S i'll try get a video, it might be cause i have an auto/semiauto