Subaru impreza gx exhaust advise
#1
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Subaru impreza gx exhaust advise
Hey,
I've recently put a Hayward and Scott back box from a blodeye wrx onto my wagon gx, the centre pip is either smaller or the flange is smaller but I didn't messure. I got it on in the end but it's not the best fit as you can imagen, so I've been thinking about changing the centre section to a bigger one to help the back box but how far will I have to go? Up to the exhaust manifold or have I got to change that aswell?
Kind regards
-dan
I've recently put a Hayward and Scott back box from a blodeye wrx onto my wagon gx, the centre pip is either smaller or the flange is smaller but I didn't messure. I got it on in the end but it's not the best fit as you can imagen, so I've been thinking about changing the centre section to a bigger one to help the back box but how far will I have to go? Up to the exhaust manifold or have I got to change that aswell?
Kind regards
-dan
#2
Scooby Regular
Hi
I've got a Hawkeye R Sport and the standard exhaust on the newage N/A's is 2.25 inches so you will need the centre section from a WRX or STi which is 2.5 inches to match the back box you have put on.
I've put a prodrive centre section and back box on mine - total nightmare - the flange join on the centre section/back box come in contact with one of the propshaft shield bolts and it rattles like hell - just like a loose heat shield. Fixed it with a "pad" of heat resistant tape between the flange and the bolt head taped in place with more of the heat resistant tape - it seems to work.
Don't forget you'll probably need to replace the ring gasket from the second cat to the centre section as well.
Hope this helps.
Andy
I've got a Hawkeye R Sport and the standard exhaust on the newage N/A's is 2.25 inches so you will need the centre section from a WRX or STi which is 2.5 inches to match the back box you have put on.
I've put a prodrive centre section and back box on mine - total nightmare - the flange join on the centre section/back box come in contact with one of the propshaft shield bolts and it rattles like hell - just like a loose heat shield. Fixed it with a "pad" of heat resistant tape between the flange and the bolt head taped in place with more of the heat resistant tape - it seems to work.
Don't forget you'll probably need to replace the ring gasket from the second cat to the centre section as well.
Hope this helps.
Andy
Last edited by dark_angel; 27 August 2015 at 03:07 PM.
#3
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Hi
I've got a Hawkeye R Sport and the standard exhaust on the newage N/A's is 2.25 inches so you will need the centre section from a WRX or STi which is 2.5 inches to match the back box you have put on.
I've put a prodrive centre section and back box on mine - total nightmare - the flange join on the centre section/back box come in contact with one of the propshaft shield bolts and it rattles like hell - just like a loose heat shield. Fixed it with a "pad" of heat resistant tape between the flange and the bolt head taped in place with more of the heat resistant tape - it seems to work.
Don't forget you'll probably need to replace the ring gasket from the second cat to the centre section as well.
Hope this helps.
Andy
I've got a Hawkeye R Sport and the standard exhaust on the newage N/A's is 2.25 inches so you will need the centre section from a WRX or STi which is 2.5 inches to match the back box you have put on.
I've put a prodrive centre section and back box on mine - total nightmare - the flange join on the centre section/back box come in contact with one of the propshaft shield bolts and it rattles like hell - just like a loose heat shield. Fixed it with a "pad" of heat resistant tape between the flange and the bolt head taped in place with more of the heat resistant tape - it seems to work.
Don't forget you'll probably need to replace the ring gasket from the second cat to the centre section as well.
Hope this helps.
Andy
Will the 2.5 centre hook straight up to the standard cat?
-dan
#6
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Thanks.
Andy
Last edited by dark_angel; 31 August 2015 at 09:41 AM.
#7
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No problem Andy, i'm not saying your wrong, just not sure if your right either.
How did you get the wrx centre section to connect to the cat? As cat should be 2.25" and center 2.5" bore.
I wondered if the exhaust would swap from the gx to the R sport. I'm not sure on the difference on engines.
Might start a new thread lol
How did you get the wrx centre section to connect to the cat? As cat should be 2.25" and center 2.5" bore.
I wondered if the exhaust would swap from the gx to the R sport. I'm not sure on the difference on engines.
Might start a new thread lol
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#8
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#9
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Only just seen this, so your center pipe is off a Newage wrx? I've just bought a non turbo Newage myself and the whole exhaust system is falling apart.
I think you could get a better fit, if you fitted an aftermarket sports cat or Decat pipe. I have a decat pipe if needed as i've now bought a sports cat. The standard centre pipe does not connect to my sport cat very well. The hole not big enough.
So you could be right Andy, WRX centre pipe might be the way to go. Any more pictures?
I think you could get a better fit, if you fitted an aftermarket sports cat or Decat pipe. I have a decat pipe if needed as i've now bought a sports cat. The standard centre pipe does not connect to my sport cat very well. The hole not big enough.
So you could be right Andy, WRX centre pipe might be the way to go. Any more pictures?
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Finally got my sorted out, now got the hayward and Scott vortex afterburner on with a hayward and Scott centre pipe on. As long as you buy anything from bugeye or blob eye models you can't go wrong pal
#14
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Only just seen this, so your center pipe is off a Newage wrx? I've just bought a non turbo Newage myself and the whole exhaust system is falling apart.
I think you could get a better fit, if you fitted an aftermarket sports cat or Decat pipe. I have a decat pipe if needed as i've now bought a sports cat. The standard centre pipe does not connect to my sport cat very well. The hole not big enough.
So you could be right Andy, WRX centre pipe might be the way to go. Any more pictures?
I think you could get a better fit, if you fitted an aftermarket sports cat or Decat pipe. I have a decat pipe if needed as i've now bought a sports cat. The standard centre pipe does not connect to my sport cat very well. The hole not big enough.
So you could be right Andy, WRX centre pipe might be the way to go. Any more pictures?
Hope this helps
Andy
#16
Scooby Regular
Hi
I've got a Hawkeye R Sport and the standard exhaust on the newage N/A's is 2.25 inches so you will need the centre section from a WRX or STi which is 2.5 inches to match the back box you have put on.
I've put a prodrive centre section and back box on mine - total nightmare - the flange join on the centre section/back box come in contact with one of the propshaft shield bolts and it rattles like hell - just like a loose heat shield. Fixed it with a "pad" of heat resistant tape between the flange and the bolt head taped in place with more of the heat resistant tape - it seems to work.
Don't forget you'll probably need to replace the ring gasket from the second cat to the centre section as well.
Hope this helps.
Andy
I've got a Hawkeye R Sport and the standard exhaust on the newage N/A's is 2.25 inches so you will need the centre section from a WRX or STi which is 2.5 inches to match the back box you have put on.
I've put a prodrive centre section and back box on mine - total nightmare - the flange join on the centre section/back box come in contact with one of the propshaft shield bolts and it rattles like hell - just like a loose heat shield. Fixed it with a "pad" of heat resistant tape between the flange and the bolt head taped in place with more of the heat resistant tape - it seems to work.
Don't forget you'll probably need to replace the ring gasket from the second cat to the centre section as well.
Hope this helps.
Andy
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