We have been doing dozens of dyno pulls on our new SS/T trying out new parts and tuning in multiple combinations. After trying a few intake mods, I decided to modify the factory airbox. Here is a step by step inexpensive modification if anyone is interested:
The airbox inlet and fenderwell tube are shown here. The ID of the fenderwell tube necks down to about 2.5", and therefore becomes restrictive on high HP setups.
After removing the airbox, notch the plastic as shown:
Next, cut the fenderwell tube just before it starts to bend. Remove the plastic brackets from the tube. I cut all of the bracket off and it left a hole in the tube. You can leave some of the bracket on and avoid the hole. It will still fit fine in the new configuration.
With the airbox back in place, connect the fenderwell tube to the airbox using a 3.25" silicone coupler and 2 clamps.
Method #2 without silicone coupler to connect snorkel:
Remove the headlight and then remove the headlight mounting bracket shown here-
Unplug the MAF sensor and remove the airbox lid:
Unbolt and remove the airbox:
Remove the snorkel bracket bolt shown to the right:
With the tire removed, you can more easily access the retainer clip behind the snorkel:
Cut off the long snorkel bracket as shown:
Cut the snorkel just before the first bend and smooth the edges:
Pic showing how the snorkel will slide into the lower airbox tube once the box is reinstalled:
With the airbox reinstalled, slide the snorkel up through the fenderwell. Use a screw to hold the pieces together:
K&N air filter installed:
Installing the AEM silicone intake:
Position the clamp on the turbo inlet for easy tightening as shown:
Connect the coupler to the airbox lid before fastening the lid to the airbox. This makes it easier to keep the coupler straight on the MAF housing:
Connect the airbox lid and fasten the clamps. Plug in the MAF sensor. Install the vent tube into the silicone coupler with the opening facing towards the MAF. Connect the vent tube assembly: