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08-17-2020, 04:56 PM | #1 |
Scooby Newbie
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JDM twinscroll downpipe, restrictive design a dealbreaker?
One of the last bits of my build is the exhaust, is this restriction going to really hinder performance on the dyno when I get a pro-tune?
If so I will have to get it cut and reweld from a shop. Has anyone stayed with this design?
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08-17-2020, 05:20 PM | #2 | |
Scooby Guru
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Are you swapping to some big glorious twinscroll turbo, or running the stock one? What engine? |
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08-17-2020, 09:46 PM | #3 | |
Scooby Newbie
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08-17-2020, 11:42 PM | #4 |
Scooby Guru
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You'll be fine.
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08-18-2020, 09:04 PM | #5 |
Scooby Newbie
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08-18-2020, 09:31 PM | #6 |
Scooby Guru
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I honestly don't remember. I did the swap ~8 years ago. If you're really worried about it, when you bring the car in for exhaust work to have the DP lengthened (I'm assuming that's a JDM length DP), have the shop match the larger size. It's not going to make a noticable difference, but you'll feel better.
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08-20-2020, 01:33 AM | #7 |
Scooby Specialist
Member#: 110078
Join Date: Mar 2006
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Vehicle:02 Bugeye JDM STi OBP BLACK |
You may give up 5whp with the factory donut gasket taper.
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