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It definatly has more bottem end through mid range power. Havently really tested it up top cause I had the wife and kid in the car. Im hoping to break 15s with car now seeing it did 16.1 stock @ 85. So im guessing with cold weather a good launch and the header, judging by what what I feel now in power is good for a 15.9 or so @ 86. Yes this my only mod on this car and the header is twice the size of the stock one.

Thanks.

 
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Nice. I got an HP Racing Header too. It sure does help with the sound

Get an intake next, that will combine with the header to give you several more hp.

 
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Yeah i wanted an intake first but on the second day at nopi last weekend they were blowing out everything for cheap. Hp hearders were only $20 bucks not 200 but 20. So i had to get one for my wifes 02 civic and one for my h22 civic.

 
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damn you actually felt a difference when you installed the header?...wow I didn't feel **** when I installed my HP racing header...lol thats why I got me a lovely k20a motor sitting my garage waiting to be installed...=)

 
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20 bucks??? damn you shoulda picked me up one and shipped it over here

 
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Yea, imo i think is just best to save up your $$ for a swap than wasting it on headers.......

 
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The 02 civic is my wifes, I have a 94 4 door civic with h22 running 14.14 with only intake and exhaust. The only reson we got the header is because it was so cheap plus i just wanted to blow some mony on the o2 civic cause when i drive it, it sucks cause it was always stock LOL.

 
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We are supposed to run my friends civic some time this weekend that runs 15.8 @ 86 and we will see if the o2 has enough ***** to hang with him.

 
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yeah the HP headers are pretty good headers.

man i wish id been there sunday if they were cuttin prices like that. end of day sat, almost everything was still full price.

 
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Well i took the car for a 10 min test drive and heres what I came up with.

Noticable power gain up to 4,000 RPMs And a slight power gain up to 7,000 Rpms.
In all honesty it really feels almost the same between 5 and 7 grand witch is what you use for 1/4 mile. But i think it just feels the same cause theres such a big difference down low. I will be running it 1/4 mile next week to see if i hit 15s Then I will hit this thread back up.

Later.

 
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suhweet...i got my hp headers chillin in my closet...this makes me want to go put them on now. haha

 
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Go for it man it takes 15 min if the car is cool prolly like 20 if hot. Its like a total of 7 bolts.

 
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15 mins? crap mine took 2 days. i stripped 3 nuts takin it off, had to go to sears and get that stripped nut kit (btw, that kit took all 3 nuts off in like 30 seconds. well worth the money). Nearly broke my wrist too. disconnected the down pipe and my arm was wrapped around it.

 
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Easy on those bolts.LOL.

 
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yeah well they were all pretty rusted. when through a half a can of penetrating oil tryin to loosen them. then i stripped one of the new ones i got from the dealership