How to Install an Intercooler Duct
By Rob Robinette
I was very disappointed in the stock mount GReddy intercooler duct adapter
so I bought a Pettit Cool Charge II intercooler duct for $110 and modified it to
fit the GReddy unit.
![](images/ic_duct_out.jpg)
The stock intercooler duct removed
I had to use tin snips to cut the stock plastic IC duct out. The hard part
is cutting out the air conditioning "tank" that sits in front of the
battery.
![](images/ic_duct_pre-trim.jpg)
The Pettit duct installed but not trimmed
![](images/ic_duct_pre-trim2.jpg)
Another view, pre-trimmed
I installed the Pettit duct and then used the GReddy IC's mount, that runs
from the frame to the top of the IC, as a gauge for how to trim the duct. I had
to take off about 1/4 inch from the top of the duct where it mates up to the IC.
I trimmed both sides a little for a good fit. I used a Dremmel tool with a
cutting disk to cut the fiberglass duct.
![](images/ic_duct_installed.jpg)
Installed
There will be about a 1/8 inch gap along the sides of the duct. I used some
black duct tape to seal the sides (see photo).
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