Why get a shorty?

BionicElite · 03-17-2007, 11:58 PM

Is there really any point to getting a shorty header, other than saying that your header is not stock? Our car comes with a great header and if you want anything better you pretty much have to go for a race header. I've looked around and I don't think anybody sees any real differences in performance going from stock to aftermarket shorty. Anybody say something different? From whats available, I was about to go with comptech, looked like nothing but good product after product from them, judging from the forums. But, can't seem to do that anymore (if only I had placed my order a week or two earlier!).

Two questions

Is it really necessary to replace the header, even if going FI later on?

So... what else can we expect in the realm of good shorty's in the near future?

k20beast · 03-18-2007, 12:04 AM

well if your goin the turbo way then the header will be a waste. but if your goin with a supercharger i would open up as much flow as i could. but the main help would be a race header yes.. bc i think the most gain i got from my dcrh was due to no cat.

bfd3832 · 03-18-2007, 12:34 AM

What about running a shorty + test pipe or high flow cat...would this yeild the same as a race header or is my thought process completly wrong?

cny · 03-18-2007, 01:00 AM

Quote:

Originally Posted by bfd3832

What about running a shorty + test pipe or high flow cat...would this yeild the same as a race header or is my thought process completly wrong?

Close to the same performance.

TJ213 · 03-18-2007, 01:03 AM

why would you run a shorty + test pipe over a RH?

btw, how close would a shorty + High Flow Cat be to a RH?

Omes · 03-18-2007, 01:15 AM

^ emissions... able to pass a crude visual inspection...

***qwerty :)*** · 03-18-2007, 05:01 AM

i think that it would be pretty close.. maybe like 2-4 whp difference from dcrh?

***qwerty :)*** · 03-18-2007, 05:01 AM

Quote:

Originally Posted by Omes

^ emissions... able to pass a crude visual inspection...

test pipe wont pass emissions.. i think you read his post too fast

Omes · 03-18-2007, 02:57 PM

Quote:

Originally Posted by qwerty :)

test pipe wont pass emissions.. i think you read his post too fast

Oops, you're right lol. Only reason I'd see for running a shorty + test pipe would be for the ease of changing between a test pipe and a high flow cat. Test pipe for the track and high flow cat for daily driving.

bfd3832 · 03-18-2007, 09:32 PM

Is there any gain difference between a high flow cat and a test pipe?

I don't have to worry about emissions here, thankfully.

k20beast · 03-18-2007, 09:37 PM

i think goin shorty+high flow cat would be a lil less power than a race header but prob not to much.. if u dont have to worry ab gettin introuble for all the hydro carbons comin out ur exhaust then just go race header

SiPusher · 03-18-2007, 09:52 PM

i would say no. i'm gonna slap a high flow cat on my stock header and call her good.

***qwerty :)*** · 03-19-2007, 03:00 AM

im selling my R/T high flow cat
http://www.8thcivic.com/forums/showt...385#post610385

brthorner · 03-20-2007, 12:57 PM

There's a guy over on TOV that had an Injen CAI + Comptech cat-back exhaust. He then added the Comptech shorty header, and although he gained 2-3whp at the high end, he lost a few lb-ft of torque, especially in the low to mid range. He then added the Random high-flow cat and gained the torque back and then some, plus a couple of additional hp.

He said that if he were to do it all over again, he would have kept the header stock, and just have done the CAI, high-flow cat and cat-back exhaust.

BT

iknowmysh1t · 03-20-2007, 01:11 PM

Quote:

Originally Posted by bfd3832

What about running a shorty + test pipe or high flow cat...would this yeild the same as a race header or is my thought process completly wrong?

this sounds like a CEL in the making!

06BlackSi · 03-20-2007, 05:46 PM

Quote:

Originally Posted by iknowmysh1t

this sounds like a CEL in the making!

actually, it doesn't...

necessarily...

Cookstar and Nomar06's Excellent Modding Adventure

Random Technology High Flow Cat Sale: Civic Si (GB Merged)

BionicElite · 03-20-2007, 06:57 PM

Where are ya Reliant? I'm interested to know how the SSR with magnaflow has been holding up.

Harry · 03-20-2007, 09:38 PM

Wouldn't a shorty header+high flow cat=more flex unlike a one peice race header so less chance of cracking?

03-17-2007, 11:58 PM	#1 (permalink)
BionicElite Junior Member Join Date: Dec 2006 Location: Pinole, California Age: 22 Posts: 12 Roger iTrader: 0 / 0%	Why get a shorty? Is there really any point to getting a shorty header, other than saying that your header is not stock? Our car comes with a great header and if you want anything better you pretty much have to go for a race header. I've looked around and I don't think anybody sees any real differences in performance going from stock to aftermarket shorty. Anybody say something different? From whats available, I was about to go with comptech, looked like nothing but good product after product from them, judging from the forums. But, can't seem to do that anymore (if only I had placed my order a week or two earlier!). Two questions Is it really necessary to replace the header, even if going FI later on? So... what else can we expect in the realm of good shorty's in the near future?

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03-18-2007, 12:04 AM	#2 (permalink)
k20beast Senior Member Join Date: Feb 2007 Location: clemson SC Age: 18 Posts: 1,158 zack iTrader: 2 / 100%	well if your goin the turbo way then the header will be a waste. but if your goin with a supercharger i would open up as much flow as i could. but the main help would be a race header yes.. bc i think the most gain i got from my dcrh was due to no cat.

03-18-2007, 12:34 AM	#3 (permalink)
bfd3832 Junior Member Join Date: Sep 2006 Posts: 13 iTrader: 0 / 0%	What about running a shorty + test pipe or high flow cat...would this yeild the same as a race header or is my thought process completly wrong?

03-18-2007, 01:03 AM	#5 (permalink)
TJ213 Senior Member Join Date: Dec 2006 Location: Pennsylvania Age: 18 Posts: 3,051 iTrader: 0 / 0%	why would you run a shorty + test pipe over a RH? btw, how close would a shorty + High Flow Cat be to a RH?

03-18-2007, 01:15 AM	#6 (permalink)
Omes Senior Member Join Date: May 2006 Location: SoCal Posts: 395 iTrader: 0 / 0%	^ emissions... able to pass a crude visual inspection...

03-18-2007, 05:01 AM	#7 (permalink)
*qwerty :)* VIP Member Join Date: Nov 2006 Location: redlands-909 Age: 21 Posts: 4,200 kyle iTrader: 8 / 100%	i think that it would be pretty close.. maybe like 2-4 whp difference from dcrh?

03-18-2007, 09:32 PM	#10 (permalink)
bfd3832 Junior Member Join Date: Sep 2006 Posts: 13 iTrader: 0 / 0%	Is there any gain difference between a high flow cat and a test pipe? I don't have to worry about emissions here, thankfully.

03-18-2007, 09:37 PM	#11 (permalink)
k20beast Senior Member Join Date: Feb 2007 Location: clemson SC Age: 18 Posts: 1,158 zack iTrader: 2 / 100%	i think goin shorty+high flow cat would be a lil less power than a race header but prob not to much.. if u dont have to worry ab gettin introuble for all the hydro carbons comin out ur exhaust then just go race header

03-18-2007, 09:52 PM	#12 (permalink)
SiPusher Member Join Date: Jan 2007 Posts: 50 iTrader: 0 / 0%	i would say no. i'm gonna slap a high flow cat on my stock header and call her good.

03-19-2007, 03:00 AM	#13 (permalink)
*qwerty :)* VIP Member Join Date: Nov 2006 Location: redlands-909 Age: 21 Posts: 4,200 kyle iTrader: 8 / 100%	im selling my R/T high flow cat http://www.8thcivic.com/forums/showt...385#post610385

03-20-2007, 12:57 PM	#14 (permalink)
brthorner Senior Member Join Date: Nov 2006 Location: Walnut Creek, CA Posts: 121 Brian iTrader: 0 / 0%	There's a guy over on TOV that had an Injen CAI + Comptech cat-back exhaust. He then added the Comptech shorty header, and although he gained 2-3whp at the high end, he lost a few lb-ft of torque, especially in the low to mid range. He then added the Random high-flow cat and gained the torque back and then some, plus a couple of additional hp. He said that if he were to do it all over again, he would have kept the header stock, and just have done the CAI, high-flow cat and cat-back exhaust. BT

03-20-2007, 06:57 PM	#17 (permalink)
BionicElite Junior Member Join Date: Dec 2006 Location: Pinole, California Age: 22 Posts: 12 Roger iTrader: 0 / 0%	Where are ya Reliant? I'm interested to know how the SSR with magnaflow has been holding up.

03-20-2007, 09:38 PM	#18 (permalink)
Harry Senior Member Join Date: Mar 2007 Location: Morgan Hill/San Jose Posts: 1,570 iTrader: 2 / 75%	Wouldn't a shorty header+high flow cat=more flex unlike a one peice race header so less chance of cracking?