? bout how much header adds in real world

hunting69 · 06-27-2008, 01:54 PM

ok here is list of buddies si
four door with light weight 20's
vibrant exhuast
vibrant header wit hi flow cat
injen cai
p2r tb

mine is two door 17's fno1rc i think from 5zigen light as hell
fujita sri
helix tb spacer
skunk 2 70 mm

we both drive bout same i get him on take off most time and then third gear he passes me like im standing still lol i ordered another gasket from p2r for my helix just in case stock gasket wasnt holding does header really add tht much diff hard to thinkit would

***whipsnap*** · 06-27-2008, 01:56 PM

Quote:

Originally Posted by hunting69

four door with light weight 20's

hunting69 · 06-27-2008, 02:00 PM

ha looks better than u think u can hold the rim in the air with two fingers and not strain

**NitrousG35** · 06-27-2008, 02:01 PM

Quote:

Originally Posted by hunting69

ok here is list of buddies si
four door with light weight 20's
vibrant exhuast
vibrant header wit hi flow cat
injen cai
p2r tb

mine is two door 17's fno1rc i think from 5zigen light as hell
fujita sri
helix tb spacer
skunk 2 70 mm

we both drive bout same i get him on take off most time and then third gear he passes me like im standing still lol i ordered another gasket from p2r for my helix just in case stock gasket wasnt holding does header really add tht much diff hard to thinkit would

The reason you are getting him from a dig is because he has more rotational mass to accelerate. Heavier wheels = slower take offs. Isn't "lightweight" 20's an oxymoron?

The reason he is pulling on you like you are standing still is because he is really in his powerband with the header.

hunting69 · 06-27-2008, 02:09 PM

Quote:

Originally Posted by NitrousG35

The reason you are getting him from a dig is because he has more rotational mass to accelerate. Heavier wheels = slower take offs. Isn't "lightweight" 20's and oxymoron?

The reason he is pulling on you like you are standing still is because he is really in his powerband with the header.

naw cause when u think 20's u think crazy heavy just like the mugen gp weigh less than our stock 17's and they are 18 inch tires is what i mean to say and i knew it would give gains but wow def good waitin on skunk2 new header lol

hunting69 · 06-27-2008, 02:11 PM

i just fig with me having two doow light wheels and smaller wheels i would get him ...i did have my g/f in car wit me she isnt heavy but another 140 lbs does add weight. i had thout to tht my exhuast being so large i may have lost power cause when i had just an intake and he had intake and exhuast i would stay head light to head light

20civic07 · 06-27-2008, 10:26 PM

to answer your question, anywhere from 5 to maybe 12 hp. lighweight 20's = no no.... 20's on our car = no no period.

radiocontrolhead · 06-27-2008, 10:37 PM

Your friend does not know what he's doing. Why modify the car at all if you're installing 20's. It looks like poop.

hunting69 · 06-28-2008, 12:48 AM

yeah yeah i know its not most peoples style but the fact is his four door wit baller twenties is whoopin my jdm style two door with only one extra mod so he is doin sumthin right lol

***Phalanx*** · 06-28-2008, 01:06 AM

you know the fact that its 2dr vs 4dr makes no different at all, right? the weight difference is like 60 lbs

***maximus20895*** · 06-28-2008, 01:17 AM

.6 of a second ...

***Phalanx*** · 06-28-2008, 01:20 AM

Quote:

Originally Posted by maximus20895

.6 of a second ...

60lbs is not .6 second, lol

every 100lbs is .1 seconds... as a general rule.

Ayodog · 06-28-2008, 10:22 AM

Quote:

Originally Posted by hunting69

yeah yeah i know its not most peoples style but the fact is his four door wit baller twenties is whoopin my jdm style two door with only one extra mod so he is doin sumthin right lol

You need to do some more reading on these forums and learn about the 8th gen si's. Alot about cars in general :/

hunting69 · 06-28-2008, 10:47 AM

Quote:

Originally Posted by Ayodog

You need to do some more reading on these forums and learn about the 8th gen si's. Alot about cars in general :/

what because i said jdm stlye and japan nly makes the four doors or should i say they make both the two and four ut only release the four in japan i know wht im talkin bout mods u can erase this thread found no useful information

**ImTheVoiceOfGod** · 06-28-2008, 10:52 AM

Quote:

Originally Posted by maximus20895

.6 of a second ...

0.06 of a second on a completely theoretical scale

Math > you

radiocontrolhead · 06-28-2008, 03:56 PM

Get the header w/ no cat and you'll blow him to the sky. End of discussion.

Wuddup · 06-28-2008, 04:20 PM

Every 13 pounds that guy said we shed, is 1 hp. So 60 pounds would be 4-5 hp roughly. Not to much of a difference, but it is present.

hunting69 · 06-28-2008, 04:48 PM

yeah tht what im gona do gety skunk 2 header no cat when it releases in june with reflash tht should do it lol

Wuddup · 06-28-2008, 06:17 PM

We are in June :)

rileyrat · 06-28-2008, 06:52 PM

Almost done with June really lol. In short, a good header will make a huge diff. Your buddies 20s are killing him in the launch but I say do what you want. For real performance on something the size of a Si you should use 17-18. If someone really knows what they are doing they could destroy your buddy with fewer mods.

06-27-2008, 01:54 PM	#1 (permalink)
hunting69 Senior Member Join Date: Feb 2008 Location: wilson nc Posts: 379 joshua iTrader: 5 / 100%	? bout how much header adds in real world ok here is list of buddies si four door with light weight 20's vibrant exhuast vibrant header wit hi flow cat injen cai p2r tb mine is two door 17's fno1rc i think from 5zigen light as hell fujita sri helix tb spacer skunk 2 70 mm we both drive bout same i get him on take off most time and then third gear he passes me like im standing still lol i ordered another gasket from p2r for my helix just in case stock gasket wasnt holding does header really add tht much diff hard to thinkit would

06-28-2008, 01:06 AM	#10 (permalink)
*Phalanx* Dont get eaten!! Join Date: Aug 2007 Location: Danvers, MA Age: 24 Posts: 11,615 Ski-Free Monster iTrader: 34 / 100%	you know the fact that its 2dr vs 4dr makes no different at all, right? the weight difference is like 60 lbs __________________ [ click for build thread ] "A car never breaks. It presents us with opportunities to upgrade." Blueshirt fanatic - NY Rangers - I bleed blue Click Here to donate now

06-28-2008, 01:17 AM	#11 (permalink)
*maximus20895* Teach me how to take pics Join Date: Apr 2006 Location: Knoxville, TN Posts: 1,979 Max iTrader: 0 / 0%	.6 of a second ... __________________ P2R TBS/TBGs / Fujita SRI / Skunk2 10th Anv. Knob/Radiator Cap / TWM SS/ Auger Boot TWM Cable/Base Bushings / StrutKing DP Cover / JDM Dipstick / Cleared Head/Tails / My Car Build Thread - Amilia

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06-27-2008, 02:00 PM	#3 (permalink)
hunting69 Senior Member Join Date: Feb 2008 Location: wilson nc Posts: 379 joshua iTrader: 5 / 100%	ha looks better than u think u can hold the rim in the air with two fingers and not strain

06-27-2008, 02:11 PM	#6 (permalink)
hunting69 Senior Member Join Date: Feb 2008 Location: wilson nc Posts: 379 joshua iTrader: 5 / 100%	i just fig with me having two doow light wheels and smaller wheels i would get him ...i did have my g/f in car wit me she isnt heavy but another 140 lbs does add weight. i had thout to tht my exhuast being so large i may have lost power cause when i had just an intake and he had intake and exhuast i would stay head light to head light

06-27-2008, 10:26 PM	#7 (permalink)
20civic07 Senior Member Join Date: Mar 2007 Posts: 1,536 iTrader: 12 / 100%	to answer your question, anywhere from 5 to maybe 12 hp. lighweight 20's = no no.... 20's on our car = no no period.

06-27-2008, 10:37 PM	#8 (permalink)
radiocontrolhead Senior Member Join Date: Apr 2006 Location: Hollywood, ca Age: 21 Posts: 2,850 Danny iTrader: 0 / 0%	Your friend does not know what he's doing. Why modify the car at all if you're installing 20's. It looks like poop.

06-28-2008, 12:48 AM	#9 (permalink)
hunting69 Senior Member Join Date: Feb 2008 Location: wilson nc Posts: 379 joshua iTrader: 5 / 100%	yeah yeah i know its not most peoples style but the fact is his four door wit baller twenties is whoopin my jdm style two door with only one extra mod so he is doin sumthin right lol

06-28-2008, 03:56 PM	#16 (permalink)
radiocontrolhead Senior Member Join Date: Apr 2006 Location: Hollywood, ca Age: 21 Posts: 2,850 Danny iTrader: 0 / 0%	Get the header w/ no cat and you'll blow him to the sky. End of discussion.

06-28-2008, 04:20 PM	#17 (permalink)
Wuddup Senior Member Join Date: May 2008 Location: Louisiana Posts: 139 iTrader: 0 / 0%	Every 13 pounds that guy said we shed, is 1 hp. So 60 pounds would be 4-5 hp roughly. Not to much of a difference, but it is present.

06-28-2008, 04:48 PM	#18 (permalink)
hunting69 Senior Member Join Date: Feb 2008 Location: wilson nc Posts: 379 joshua iTrader: 5 / 100%	yeah tht what im gona do gety skunk 2 header no cat when it releases in june with reflash tht should do it lol

06-28-2008, 06:17 PM	#19 (permalink)
Wuddup Senior Member Join Date: May 2008 Location: Louisiana Posts: 139 iTrader: 0 / 0%	We are in June :)

06-28-2008, 06:52 PM	#20 (permalink)
rileyrat Senior Member Join Date: Jun 2008 Location: El Paso Tx. Posts: 366 iTrader: 2 / 100%	Almost done with June really lol. In short, a good header will make a huge diff. Your buddies 20s are killing him in the launch but I say do what you want. For real performance on something the size of a Si you should use 17-18. If someone really knows what they are doing they could destroy your buddy with fewer mods.