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Old 12-21-2006, 03:55 AM   #1
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Default DP bolts to cat?

ok, looking at the photo's I've seen of greddy turbo installs, I can't tell if the DP connects to the 3-bolt flange at the back of the engine, or if it connects to the 2-bolt flange at cat.

could someone clarify? I've got a welded-in cat, and I wanna know if I'll need to either have a flange welded in, or run open exhaust for the ~3-4 miles to the place I trust my exhaust with once I've installed the turbo.
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Old 12-21-2006, 09:37 AM   #2
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The stock GReddy downpipe bolts to the 3 bolt flange on the midpipe. Aftermarket downpipes like Racing Mazda (RMDP) and Tony's go to the 2 bolt flange on the cat.
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Old 12-24-2006, 03:01 AM   #3
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Speaking from experience, open exhaust is freaking loud.
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Old 12-24-2006, 03:17 AM   #4
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But open exhaust on a turbo motor is WAY more quiet than a N/A 1.6 with only a straight through resonator. I ran mine with no exhaust, it was far quieter than my friends 1.6 that has a simple straight resonator with no muffler.
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Old 12-27-2006, 10:38 PM   #5
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Quote:
Originally Posted by curly View Post
ok, looking at the photo's I've seen of greddy turbo installs, I can't tell if the DP connects to the 3-bolt flange at the back of the engine, or if it connects to the 2-bolt flange at cat.

could someone clarify? I've got a welded-in cat, and I wanna know if I'll need to either have a flange welded in, or run open exhaust for the ~3-4 miles to the place I trust my exhaust with once I've installed the turbo.
3-4 miles shouldn't be a problem. Take a look at my webpage for my $41 exhaust system. Works fine at 15 PSI so it should be good with your Greddy.
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