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Old 07-09-2003, 11:45 AM   #1
ride5000
Scooby Guru
 
Member#: 32792
Join Date: Feb 2003
Chapter/Region: NESIC
Location: lincoln, ri
Vehicle:
2003 GGA MBP
12.9 / 105+

Question thermo-wrap exhaust manifold or no?

i've done some searching already, and read a lot. there are pros and cons:

pros:
keeps more heat in pre-turbo exhaust section, improving spool
keeps more heat out of engine compartment, improving longevity of rubber/plastic, decreasing heat soak of IC
less chance of burning the **** out of yourself while under the hood

cons:
bit of a pita to install
costs money
can lead to premature death of exhaust piping, esp. cast iron like the oem subie manifold due to rusting
can lead to cracking of piping from greater thermal stresses

i'm leaning toward doing it while i do UP and DP and EGT install. anyone care to comment on the pros and cons above?

tia
ken
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Old 07-09-2003, 12:05 PM   #2
Wheeler Bement
Scooby Specialist
 
Member#: 15652
Join Date: Feb 2002
Chapter/Region: TXIC
Location: sugar land, katy
Vehicle:
2002 2.5L WRX Wag.
160K club

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can lead to premature death of exhaust piping, esp. cast iron like the oem subie manifold due to rusting
can lead to cracking of piping from greater thermal stresses

this could be bad for the turbo


have you considered the jet hot coating route? i would, but can't afford the down time or the cost
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