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Old 01-22-2013, 04:18 PM   #1
alesx7817
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Default Can I cut and splice the donwpipe?

I bought invidia Q300 + downpipe at installation time, missed 10 cm long to fit all

My mechanic said it will amend the domwpipe with another piece of steel pipe

Said it will not harm or alter the functioning of the downpipe

Could someone confirm this?


You can cut the downpipe to make a Splice without impairing the functioning?
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Old 01-22-2013, 05:44 PM   #2
bluemax189
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if you bought an invidia downpipe and invidia catback for the correct vehicle it should not need to be cut and extended at all.
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Old 01-22-2013, 05:48 PM   #3
assasain
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I think my better half is telling me not to change the lengths of the tubing as that will adjust the overall performance by shortening or lengthening the original design. Therefore the airflow won't be manufacturer specs meant to flow through that pipe.

But that's just me overthinking this probably.
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Old 01-22-2013, 06:14 PM   #4
802-303
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I have a feeling your dealing with a non-USDM car, and the downpipe you bought was for a USDM car.... I'm not sure about the 08+, but 02-07 had a longer downpipe for the JDM cars, shorter for USDM. If the same applies, and I'm reading your post correctly, you'll need to extend your downpipe....
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Old 01-22-2013, 06:27 PM   #5
alesx7817
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Quote:
Originally Posted by bluemax189 View Post
if you bought an invidia downpipe and invidia catback for the correct vehicle it should not need to be cut and extended at all.
My mechanic works with cars subaru mechanic, he is the first automatic picks

He had already pulled the mapping of my sti and analyze vai, I'm worried

So I wanted to install invidia Q300, but at the time, lacked a pipe about the size of donwpipe

I bought this product site

http://www.rallysportdirect.com/Invi...-2011-WRX-2011

Should not come one more piece of pipe to splice in another part of the original sti?

That part should not need to buy to use the downpipe? If the problem or remap the car's performance
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Old 01-22-2013, 06:31 PM   #6
kpluiten
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Extending the length will not harm the car. Have him fix it and start enjoying your car.
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Old 01-22-2013, 09:06 PM   #7
dave_88
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^^^^^^^^^^^^ this. it's a pipe that the exhaust gas travels. since it's all post-turbo, the only thing that will effect the performance is if you add something restrictive to the flow.

i think you got a jdm downpipe and a usdm cat back and that's why it's short.
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Old 01-23-2013, 10:42 AM   #8
alesx7817
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They can delete or close the topic, the mechanic was confused and reversed so the tips do not fit

This solved everything, in my sti invidia Q300 without installing downpipe


thank you
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Old 01-23-2013, 11:03 AM   #9
Risko
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^ sounds like a great mechanic.
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