HP Header installed (pics) EX DIY updated AGAIN with performance review
#122
Registered!!
iTrader: (7)
Join Date: Dec 2004
Location: Belgium
Age: 41
Posts: 561
Likes: 0
Received 0 Likes
on
0 Posts
Rep Power: 242 i like the full header it does his work as speaking.tested it against a stoch d17 vtec
and i gain a nice distance till 220km/h dont know exacly how many miles/h that is.
I can say that its a difference at all rpm an it gives some more at high rpm!for now
its working for me till i get boosted...
grtz
and i gain a nice distance till 220km/h dont know exacly how many miles/h that is.
I can say that its a difference at all rpm an it gives some more at high rpm!for now
its working for me till i get boosted...
grtz
#123
Originally Posted by DaRk_MauL
i like the full header it does his work as speaking.tested it against a stoch d17 vtec
and i gain a nice distance till 220km/h dont know exacly how many miles/h that is.
I can say that its a difference at all rpm an it gives some more at high rpm!for now
its working for me till i get boosted...
grtz
and i gain a nice distance till 220km/h dont know exacly how many miles/h that is.
I can say that its a difference at all rpm an it gives some more at high rpm!for now
its working for me till i get boosted...
grtz
#124
Registered!!
iTrader: (1)
Join Date: Dec 2004
Location: San Diego, CA
Age: 43
Posts: 243
Likes: 0
Received 0 Likes
on
0 Posts
Rep Power: 0 I bought the HP racing header with cat and i'm experiencing some lagging. Let me explain:
After installing the header, which was super difficult, I connected the o2 sensors without the o2 sims that they provide. I was dumb and didn't know what they were for, and it was late. Regardless, the header hit against the front frame of the car and would vibrate when i braked or when the engine moved forward. So, I removed about a 1/4 inch of frame, melted it off with a torch, where it hit; no biggie.
Vibrating solved. When I drove the car things were fine, no lagging at all, but then after a day the engine light came on. So I call HP and ask them what the little boxes with wires are for and why they are needed. I find out they are o2 sims and trick the engine, and without them my car will lag.
So, i install them according to their directions, but the directions don't say which white wire to connect the o2 sim to since there are two white wires coming from the o2 sensor. So, i connected it. Reset ECU. But know after three days of driving, including freeway driving, the car lags. It seems as if it is not getting enough gas.
I call HP and tell them. Damien, the guy at HP, tells me that I might need a Super AFC fuel 'something or other' in order to opent the fuel line more and for longer.
I decide to give it another day or two, thinking that maybe the ecu is dumb and that it'll adjust to the new extraneous amount of exhuast. Today, the engine light came on!!
Help. Logically, it must be the o2 sims because it was not lagging before i put them on.
Anyone experience this? Did i install the o2 sims wrong?
Also, the header had two locations on the primary tubes for o2 sensors and a third on the "cat" itself. HP said you should plug one. DUH!!! but they don't provide that, and Damien said that a spark plug works. I can't believe they don't provide something to plug the second 02 sensor location on the header
After installing the header, which was super difficult, I connected the o2 sensors without the o2 sims that they provide. I was dumb and didn't know what they were for, and it was late. Regardless, the header hit against the front frame of the car and would vibrate when i braked or when the engine moved forward. So, I removed about a 1/4 inch of frame, melted it off with a torch, where it hit; no biggie.
Vibrating solved. When I drove the car things were fine, no lagging at all, but then after a day the engine light came on. So I call HP and ask them what the little boxes with wires are for and why they are needed. I find out they are o2 sims and trick the engine, and without them my car will lag.
So, i install them according to their directions, but the directions don't say which white wire to connect the o2 sim to since there are two white wires coming from the o2 sensor. So, i connected it. Reset ECU. But know after three days of driving, including freeway driving, the car lags. It seems as if it is not getting enough gas.
I call HP and tell them. Damien, the guy at HP, tells me that I might need a Super AFC fuel 'something or other' in order to opent the fuel line more and for longer.
I decide to give it another day or two, thinking that maybe the ecu is dumb and that it'll adjust to the new extraneous amount of exhuast. Today, the engine light came on!!
Help. Logically, it must be the o2 sims because it was not lagging before i put them on.
Anyone experience this? Did i install the o2 sims wrong?
Also, the header had two locations on the primary tubes for o2 sensors and a third on the "cat" itself. HP said you should plug one. DUH!!! but they don't provide that, and Damien said that a spark plug works. I can't believe they don't provide something to plug the second 02 sensor location on the header
Last edited by ManUtd0018; 01-16-2005 at 09:42 PM.
#125
Registered!!
iTrader: (7)
Join Date: May 2004
Location: Kanada
Posts: 3,435
Likes: 0
Received 0 Likes
on
0 Posts
Rep Power: 277 yeah it has to be the o2 sims and that hole that needs to be plugged. i don't know why they didn't provide a plug. stupid IMO. i have no experience with the o2 sims so can't help you there. search for a DIY maybe.
#126
Registered!!
Join Date: Oct 2004
Location: Austin, TX
Age: 40
Posts: 118
Likes: 0
Received 0 Likes
on
0 Posts
Rep Power: 0
Originally Posted by ManUtd0018
Aye, it is a shame about the extra bung, but you could keep the factoryo2s up front and put a wideband sensor into the rear bung. I just plugged it with an extra o2 sensor I had laying around. Having lots of broken cars has it's advantages
#127
Registered!!
iTrader: (7)
Join Date: Dec 2004
Location: Belgium
Age: 41
Posts: 561
Likes: 0
Received 0 Likes
on
0 Posts
Rep Power: 242 i didnt used the o2 module and i have no problem because some @ honda-tech
explained to me that this module just makes your ecu believe that your cat is working
that is al.
explained to me that this module just makes your ecu believe that your cat is working
that is al.
#133
Tejas PimP
Hey! Look At Me!! I'm a Supporting Member!!
iTrader: (3)
Join Date: Feb 2005
Location: Euless, Texas
Age: 50
Posts: 2,756
Likes: 0
Received 0 Likes
on
0 Posts
Rep Power: 261 ~ I had a question for IronFist or whom ever is able to answer, about the header and O2 sensor. I bought a Ceramic Focuz Header and it has a spot in the side of it for what appears to the O2 sensor.. but when you remove the heat shield the sensor is below the header, in what I would assume is the manifold. Question is: When you remove the stock header to add a(n) aftermarket one, does the manifold come off? I bought my header used and there are no instructions with it and I have been unable to find a "Focuz" website to look at instructions. Any imput you guys can give me would be greatly appreciated. Thx ~
#135
Tejas PimP
Hey! Look At Me!! I'm a Supporting Member!!
iTrader: (3)
Join Date: Feb 2005
Location: Euless, Texas
Age: 50
Posts: 2,756
Likes: 0
Received 0 Likes
on
0 Posts
Rep Power: 261
Originally Posted by kornsined
ok first is this a top portion header or a full race header? what model do you have, LX or EX?
~ errr - what ever piece is right behind the heat shield infront of the fan ~
#137
Tejas PimP
Hey! Look At Me!! I'm a Supporting Member!!
iTrader: (3)
Join Date: Feb 2005
Location: Euless, Texas
Age: 50
Posts: 2,756
Likes: 0
Received 0 Likes
on
0 Posts
Rep Power: 261
Originally Posted by kornsined
there should be no need to touch the o2 sensor. that manifold is actually called the downpipe. maybe you got an LX header because those have the sensor in the header.
~ Plus there is a O2 sensor attached to the Cat also.. right? ~
#138
Registered!!
iTrader: (7)
Join Date: May 2004
Location: Kanada
Posts: 3,435
Likes: 0
Received 0 Likes
on
0 Posts
Rep Power: 277 the guy is right but that's if you have a manifold like the lx. the ex doesn't it has a header. so basically you should have gotten an ex header not an lx header. the cat attached to the downpipe underneath the car has an o2 sensor.
#139
Registered!!
iTrader: (2)
Join Date: Oct 2004
Location: Houston
Posts: 388
Likes: 0
Received 0 Likes
on
0 Posts
Rep Power: 0 if you have the header that goes under your car this is what i did:
there are two sensors on the downpipe/ cat, the one in the engine bay gets pluged into the threaded hole on the bottom of the header just before it bends under the engine, the second one will be pluged into the aftermarket cat you bought
lol sorry i didnt realize you were talking about a totaly dif header
there are two sensors on the downpipe/ cat, the one in the engine bay gets pluged into the threaded hole on the bottom of the header just before it bends under the engine, the second one will be pluged into the aftermarket cat you bought
lol sorry i didnt realize you were talking about a totaly dif header
Last edited by Bmkarr; 03-20-2005 at 12:12 AM. Reason: didnt read it right
#141
Tejas PimP
Hey! Look At Me!! I'm a Supporting Member!!
iTrader: (3)
Join Date: Feb 2005
Location: Euless, Texas
Age: 50
Posts: 2,756
Likes: 0
Received 0 Likes
on
0 Posts
Rep Power: 261 ~ The header I bought looks just like this one ~
~ The header I bought looks just like this one ~
Originally Posted by IronFist
Side view:
(notice how much smoother the bends in the HP header are)
(notice how much smoother the bends in the HP header are)
#142
Originally Posted by D17thgen
anybody know how big the diameter of the actual piping is? from the innerside that is, not outside.
im in the market for a header but i dont know wheather i should go with dc 4-1 cermic or the hp cermic. i know the hp got biggers pipes, but with smaller pipes > higher pressure > low end. so if anyone can measure either the hp top portion header, and/or the dc cermic header... i'd appriceate it. 100 pts if u like =D
im in the market for a header but i dont know wheather i should go with dc 4-1 cermic or the hp cermic. i know the hp got biggers pipes, but with smaller pipes > higher pressure > low end. so if anyone can measure either the hp top portion header, and/or the dc cermic header... i'd appriceate it. 100 pts if u like =D
over spring break, i'll be putting it in along with my whole exhaust, ordered a tanabe SRM, custom 2.25" piping, big resonator for pressure and to quiet it down a little lol, and high flow cat, i freakin cant wait... next week!
btw, anyone know if my setup is street legal? i've never had to have a sniffer test done in AR, but i dont wanna have a nasty suprise if something comes up...
Last edited by Dangerousmonkey; 03-20-2005 at 04:57 PM.
#144
Re: HP Header installed (pics) EX DIY updated AGAIN with performance review
Updated Performance Review
Another update (I have a lot of posts in this thread).
I think my ECU just finished adjusting to this mod. The other day I was driving after having it installed for about 200 miles and all of a sudden everything seemed faster. I'm talking about more power throughout the entire powerband! I hope it stays this way. This is strange, because I reset the ECU after I first installed it. Oh well. I like it better this way, anyway.
I also got 31mpg on my first tank of gas after installing this (probably 60% highway driving and 40% city driving, but lots of high revving the whole time )
Another update (I have a lot of posts in this thread).
I think my ECU just finished adjusting to this mod. The other day I was driving after having it installed for about 200 miles and all of a sudden everything seemed faster. I'm talking about more power throughout the entire powerband! I hope it stays this way. This is strange, because I reset the ECU after I first installed it. Oh well. I like it better this way, anyway.
I also got 31mpg on my first tank of gas after installing this (probably 60% highway driving and 40% city driving, but lots of high revving the whole time )
Thread
Thread Starter
Honda Civic Forum
Replies
Last Post
notoriouspyro
General Honda Civic Forum Archive.
17
02-16-2007 08:29 PM
CivicRacer5
General Honda Civic Forum Archive.
7
06-06-2003 01:19 AM
nightkids1
General Honda Civic Forum Archive.
7
09-11-2002 01:12 PM