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Old Oct 27, 2009 | 03:55 PM
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Default C5 Tunnel Plate

I've seen C5 tunnel plates for sale in the parts section and was wondering if someone can explain what a C5 tunnel plate is and what it's used for?

Thanks for the education
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Old Oct 27, 2009 | 04:03 PM
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It is a bolted plate on the undercarriage of the car that increases the stiffness of the chassis. The thicker the plate, the more resistant the car is to torsion and bending. You can also get insulated ones that reduce the amount of heat that intrudes into the cabin from the exhaust/cats.

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Old Oct 27, 2009 | 04:22 PM
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Originally Posted by Mr.TT
It is a bolted plate on the undercarriage of the car that increases the stiffness of the chassis. The thicker the plate, the more resistant the car is to torsion and bending. You can also get insulated ones that reduce the amount of heat that intrudes into the cabin from the exhaust/cats.

It goes between the drive shaft and the exhaust pipes (hence the reduction in heat from the exhaust if the plate is insulated/coated), spanning the "tunnel" that the drive shaft goes through. Hope this helps.
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Old Oct 27, 2009 | 04:32 PM
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Ahhhhhhh

Thanks Guys, I learn something every day from you
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Old Oct 27, 2009 | 04:36 PM
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You can see mine in this pic behind the x-pipe. You can find out more info from Elite Engineering's website www.eliteengineeringusa.com

Jim
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Old Oct 27, 2009 | 05:06 PM
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I have an Elite Eng and it's a quality piece
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Old Oct 27, 2009 | 06:04 PM
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Originally Posted by Mr.TT
It is a bolted plate on the undercarriage of the car that increases the stiffness of the chassis. The thicker the plate, the more resistant the car is to torsion and bending. You can also get insulated ones that reduce the amount of heat that intrudes into the cabin from the exhaust/cats.
That about sums it up. The Elite Engineering one is very popular.
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Old Oct 27, 2009 | 07:31 PM
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Also check out the LG brand from CCA. It has pre-drilled holes for your O2 sensors.
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Old Oct 27, 2009 | 09:35 PM
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i have the Elite Eng tunnelplate and couldn't be happier. It help reduce the heat coming up from the exhaust BUT what really blew me away was how much better the car feels - much tighter

Great piece well worth the $

bob
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