Borla Pro XS
April-25th-2002, 09:08 PM
#1
Speed Racer
Thread Starter
Join Date: Feb 2002
Location: Manassas, VA
Posts: 665
Borla Pro XS
I finally decided on an Exhaust. I want to get this borla Pro XS muffler and have a shop hook me up with a custom install.
http://www.borla.com/proxs/pages/muf...24.167.101.205
Im looking at getting the 2.25 inlet/outlet muffler and 2.25 piping. Does this sound good? Im looking at 120 for the muffler and 200-250 for the rest.
http://www.borla.com/proxs/pages/muf...24.167.101.205
Im looking at getting the 2.25 inlet/outlet muffler and 2.25 piping. Does this sound good? Im looking at 120 for the muffler and 200-250 for the rest.
May-3rd-2002, 09:56 PM
#4
Protege Newbie
Join Date: May 2002
Location: Austin, Texas
Posts: 8
2.25 is too large of pipe for the car. You need to run 2". Using the larger pipe will reduce too much back pressure, thus decreasing your HP. Got this from a Borla Tech.
2001 Protege LX 2.0 Sand Mica
17" Enkei RCT's
205/40/17 Parada Yakima's
Eibach sport springs
B&M ripper shifter
Injen CAI
2000 watts of pure adrenaline
2001 Protege LX 2.0 Sand Mica
17" Enkei RCT's
205/40/17 Parada Yakima's
Eibach sport springs
B&M ripper shifter
Injen CAI
2000 watts of pure adrenaline
May-3rd-2002, 09:58 PM
#5
That's me!!
Join Date: Oct 2001
Location: Denver, CO
Posts: 337
Originally posted by cmattp
2.25 is too large of pipe for the car. You need to run 2". Using the larger pipe will reduce too much back pressure, thus decreasing your HP. Got this from a Borla Tech.
2.25 is too large of pipe for the car. You need to run 2". Using the larger pipe will reduce too much back pressure, thus decreasing your HP. Got this from a Borla Tech.
The stock pipe is 2", why would you not want to go larger??2.25" is a good size.
May-4th-2002, 09:14 AM
#6
Blue boomstick
Join Date: Mar 2002
Location: longwood, fl
Posts: 359
Exhuast
Here is the custom job I got done , ANSA MOTORSPORTS Muffler and 2.25 piping all the way back , took out resonator .
And the Money shot.
The sound IS really Deep now , And Screams at high RPM , it improve horepower all around the RPM range.
Doesnt sound like those stupid Civics at all.
And the Money shot.
The sound IS really Deep now , And Screams at high RPM , it improve horepower all around the RPM range.
Doesnt sound like those stupid Civics at all.
May-4th-2002, 05:25 PM
#8
Registered User
Join Date: Sep 2001
Location: Centennial, Colorado
Posts: 1,667
Ok.. the backpressure thing is a myth. This has been discussed many times... and thanks to Jesse... i've got some info I can post on this. 
These are some examples of what the exhaust systems are like... These are borrowed from http://www.team-integra.net and posted on my server as not to waste their bandwidth.
This image here shows what the stock exhaust system flows like... there's backpressure (restriction) which you don't want. What you want to do is upgrade your inside diameter, as to get a better flow. As you can see, the 'waves' get closer together at the end, which is what causes the back pressure.
This image here shows what the flow looks like with a 2.25" ID, which is what you want... As you can see, the 'waves' are evenly spaced, because they can flow correctly due to there being no restriction.
This is what happens when you get a pipe that's too big (3") for a NA motor. The 'waves' bounce in different directions, causing a shitty flow. So... 2.25 is the perfect size, and backpressure is
There...
These are some examples of what the exhaust systems are like... These are borrowed from http://www.team-integra.net and posted on my server as not to waste their bandwidth.
This image here shows what the stock exhaust system flows like... there's backpressure (restriction) which you don't want. What you want to do is upgrade your inside diameter, as to get a better flow. As you can see, the 'waves' get closer together at the end, which is what causes the back pressure.
This image here shows what the flow looks like with a 2.25" ID, which is what you want... As you can see, the 'waves' are evenly spaced, because they can flow correctly due to there being no restriction.
This is what happens when you get a pipe that's too big (3") for a NA motor. The 'waves' bounce in different directions, causing a shitty flow. So... 2.25 is the perfect size, and backpressure is
There...
May-5th-2002, 11:44 AM
#10
Patriotic Protege5
Join Date: Dec 2001
Location: Hampton, VA
Posts: 908
did anyone read the article SCC did on making custom exhausts? I'm sure TheMAN did!! It was great. You guys should try to get back issues from them just for that article. www.sportcompactcarweb.com
May-6th-2002, 02:32 PM
#11
Protege God
Join Date: Sep 2001
Location: Evanston, IL
Posts: 1,525
No offense, but why don't you call that Borla tech back and ask him why his company produces a custom application cat-back exhaust for the Protege with 2.25" piping if that's too large a diameter for the car?
Originally posted by cmattp
Sorry, but that's not true. You want some back pressure. Why don't you call Borla.
Sorry, but that's not true. You want some back pressure. Why don't you call Borla.
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