Helix DP with Borla Catback

PJ311 · 07-20-2004, 11:26 AM

Didn't know if I should put this here or in the Aftermarket Forced Induction. I'll try here first. My present setup is a Helix up and down pipe and I have a Borla Hush catback to install with it. The only problem is the Borla Hush is made to bolt onto the stock downpipe with a donut flange. The Helix downpipe has a flat surface.
Anyway I was just wondering if anybody has this same setup and if they do, how did they go about connecting the two.
Thanks

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mrbigisbudgood · 07-20-2004, 11:50 AM

#1 Do a search.

#2 I mounted the same setup on my car using the stock doughnut gasket. I also used a double thick flange gasket with a steel insert on the face of the downpope and trimmed everything so the lip of the doughnut gasket interfaced perfectly with the gasket. Basically it goes....downpipe flange -> flange gasket with insert -> stock doughnut -> Borla round flange. Copper spray is also your friend. I have zero leaks in about 13000 miles.

Rickyh · 07-20-2004, 01:21 PM

Bolted mine together without any gasket and it doesn't leak.

JJD92 · 07-20-2004, 04:45 PM

Hello,
I have the borla Hush and order the Helix downpipe. So it bolt on without any adapter? Do you have photos? I believe that it would need some kind of fabrication. If it fit rigth away would be very nice. How about the restriction?
how does it sound?
LAter,
JJD92

PJ311 · 07-21-2004, 12:02 PM

JJD92....I don't have it connected yet, still trying to figure out how to do it.

Rickyh.....But you don't have a Borla Catback correct?

mrbigisbudgood......Do you have any pics of your setup?

Cheers and Thanks

Rickyh · 07-21-2004, 02:35 PM

I have the Borla Hush catback connected to a Helix dp. I bolted everything up as is right out of the box.

PJ311 · 07-22-2004, 09:44 AM

Rickyh, I've been trying to email you on this from another post with a similar topic, but think I've been emailin the wrong guy. Do you have any pics of this? I'm just wondering how you connected a 3 inch flat flange with a 3 inch donut gasket flange without getting any leaks? Appreciate the help guys, Thanks.

Vector92 · 07-22-2004, 03:14 PM

Have a muffler shop weld on a flat 3" flange

PJ311 · 07-22-2004, 11:52 PM

Thank you all for your advice and help. Had a 3 inch pipe added in and a 3 inch flange welded on, all works perfect. Cheers!

Another question now though:

HKS up and down pipe with a Borla Hush Catback.

Why am I not seeing performance gains????
The car doesn't seem to have the pull it did before, throttle response seems slower and the turbo seems to take longer to spool up.
Other then being louder I'm a little disappointed. Am I getting turbo lag? I keep hearing that people re-flash the ECU in their cars.....is there something I should have done in order to get the performance gains that I expected from a 3 inch turbo back?

sonicblue · 07-23-2004, 09:19 AM

Without a re-tune, you won't get anywhere near the max gains from your TBE. Get Cobb's AccessPort and be happy-happy........

Bishop · 07-23-2004, 12:57 PM

can anyone take pics for me? i can't decide between the catted helix or the maddad "metal" and 3ce. what do you guys think?

07-22-2004, 11:52 PM	#9
PJ311 Scooby Newbie Member#: 41077 Join Date: Aug 2003 Location: Mississauga, ON Vehicle: 2002 Impreza WRX Silver	Thanks Thank you all for your advice and help. Had a 3 inch pipe added in and a 3 inch flange welded on, all works perfect. Cheers! Another question now though: HKS up and down pipe with a Borla Hush Catback. Why am I not seeing performance gains???? The car doesn't seem to have the pull it did before, throttle response seems slower and the turbo seems to take longer to spool up. Other then being louder I'm a little disappointed. Am I getting turbo lag? I keep hearing that people re-flash the ECU in their cars.....is there something I should have done in order to get the performance gains that I expected from a 3 inch turbo back?

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07-20-2004, 11:26 AM	#1
PJ311 Scooby Newbie Member#: 41077 Join Date: Aug 2003 Location: Mississauga, ON Vehicle: 2002 Impreza WRX Silver	Helix DP with Borla Catback Didn't know if I should put this here or in the Aftermarket Forced Induction. I'll try here first. My present setup is a Helix up and down pipe and I have a Borla Hush catback to install with it. The only problem is the Borla Hush is made to bolt onto the stock downpipe with a donut flange. The Helix downpipe has a flat surface. Anyway I was just wondering if anybody has this same setup and if they do, how did they go about connecting the two. Thanks * Registered users of the site do not see these ads.

07-20-2004, 11:50 AM	#2
mrbigisbudgood Scooby Specialist Member#: 54378 Join Date: Feb 2004 Chapter/Region: South East Location: Charlotte, NC Vehicle: 2023 WRX WRB	#1 Do a search. #2 I mounted the same setup on my car using the stock doughnut gasket. I also used a double thick flange gasket with a steel insert on the face of the downpope and trimmed everything so the lip of the doughnut gasket interfaced perfectly with the gasket. Basically it goes....downpipe flange -> flange gasket with insert -> stock doughnut -> Borla round flange. Copper spray is also your friend. I have zero leaks in about 13000 miles.

07-20-2004, 01:21 PM	#3
Rickyh Scooby Specialist Member#: 40453 Join Date: Jul 2003 Chapter/Region: South East Location: Metairie, Louisiana	Bolted mine together without any gasket and it doesn't leak.

07-20-2004, 04:45 PM	#4
JJD92 Scooby Newbie Member#: 39360 Join Date: Jul 2003 Chapter/Region: NESIC Location: Springfield, MA Vehicle: 2016 Forester XT Dark Grey	Hello, I have the borla Hush and order the Helix downpipe. So it bolt on without any adapter? Do you have photos? I believe that it would need some kind of fabrication. If it fit rigth away would be very nice. How about the restriction? how does it sound? LAter, JJD92

07-21-2004, 12:02 PM	#5
PJ311 Scooby Newbie Member#: 41077 Join Date: Aug 2003 Location: Mississauga, ON Vehicle: 2002 Impreza WRX Silver	JJD92....I don't have it connected yet, still trying to figure out how to do it. Rickyh.....But you don't have a Borla Catback correct? mrbigisbudgood......Do you have any pics of your setup? Cheers and Thanks

07-21-2004, 02:35 PM	#6
Rickyh Scooby Specialist Member#: 40453 Join Date: Jul 2003 Chapter/Region: South East Location: Metairie, Louisiana	I have the Borla Hush catback connected to a Helix dp. I bolted everything up as is right out of the box.

07-22-2004, 09:44 AM	#7
PJ311 Scooby Newbie Member#: 41077 Join Date: Aug 2003 Location: Mississauga, ON Vehicle: 2002 Impreza WRX Silver	Rickyh, I've been trying to email you on this from another post with a similar topic, but think I've been emailin the wrong guy. Do you have any pics of this? I'm just wondering how you connected a 3 inch flat flange with a 3 inch donut gasket flange without getting any leaks? Appreciate the help guys, Thanks.

07-22-2004, 03:14 PM	#8
Vector92 Scooby Newbie Member#: 40661 Join Date: Jul 2003 Location: Abilene, TX Vehicle: 2002 Imprezza WRX WRX Blue	Have a muffler shop weld on a flat 3" flange

07-23-2004, 09:19 AM	#10
sonicblue Scooby Specialist Member#: 25227 Join Date: Sep 2002 Chapter/Region: Tri-State Location: Oh st I ain't from Brooklyn! Vehicle:** 2012 Escape Black	Without a re-tune, you won't get anywhere near the max gains from your TBE. Get Cobb's AccessPort and be happy-happy........

07-23-2004, 12:57 PM	#11
Bishop Scooby Guru Member#: 59993 Join Date: Apr 2004 Chapter/Region: International Location: WWAAYY west of the Mississippi Vehicle: Ass, grass or cash no one rides for free!!	can anyone take pics for me? i can't decide between the catted helix or the maddad "metal" and 3ce. what do you guys think?