SKU 100/105/110/115/120/130/135/140/145/150/155/160 / 225/226/235 / 1000 / 1005/1010/1015
Sound Tube Kit for All Drivers Side Inlets
The Sound Tube Kit Contents
Remove the rubber plug in the sound tube hole next to the brake booster or remove OEM sound tube. With the supplied drill bit enlarge the existing hole to the SECOND to last step of the drill bit to make a 1 1/4” hole. For 2005 to 2009 Models, they will have the A/C condenser in back of the shock tower which will need to be set aside before drilling, also they will not have an existing hole or plug because they never came with an OEM sound tube. Remove the bolt securing the A/C condenser and set it aside. No lines need to be disconnect for drilling. Drill hole in the same location by first using a center punch to start the hole then use provide drill and drill to 1 1/4” SECOND to the last step on the bit and follow procedure as outlined below.
Clean and vacuum any metal filling from drilling and clean any burs from the drilled hole. With light grease pack the grommet groove slot and around the drilled hole to protect against corrosion. Insert the grommet and apply more grease to the inside of the grommet, push the sound tubes end with straight hose barb through the firewall. Sound Tube should be routed on the outside Canister Watch video
The Following section will describe connecting sound tube to various inlet pipes and Airbox setups. Find your setup and follow the steps provided Inlets 1-6.
Drilling the inlet pipe in the location circled with the step drill to 1 1/4” ID size, the second to last step on the drill bit. Inlet pipe should be removed and filter and MAF removed before drilling pipe as not to get any fillings in the inlet path. MAF can also be wrapped inside with tin foil and left in place for drilling if needed. Air filter must be removed first and is accessed for removal from the drivers wheel well. Remove push pins in the front of the wheel well liner to get access to the filter for removal. Once drilled clean the edges with a razor or sand paper then install the smaller of the 2 grommets into the hole. Clean pipe as needed after
Install the diaphragm cap over the end of the sound tube hose barb that comes in through the firewall under. You will need a second hand to hold the sound tube on the other side while pushing the diaphragm cap onto the hose barb end coming through the firewall. Important the diaphragm cap keeps the sound tube completely sealed and ensures the inlet and MAF doesn’t leak unmetered air. WATCH VIDEO BELOW.
Sound Tube Routing to Firewall. Image showing the sound tube inserted through the grommet and fire wall hole.
Whipple air Box Sound Tube Routing
With provided step drill bit, drill out the inlet pipe to 1 ¼”. This is the second to the last step on the drill bit. The drilled holes edge should be no more than 1" from the edge of the pipe so that the filter can reinstalled. The red circle indicated the apex location of the hole to be drilled, but at the bottom of the inlet pipe 180 degrees from the red circle mark. installing the sound tube firewall end first, then layout the sound tube for best fitment and location to drill. Cleanup the inside of the drilled hole so it’s uniform and smooth. Install the grommet using supplied grease and then install the 90 degree 1” hose barb fitting. Attach the sound tube to the hose barb end of the JLT pipe.
Drilling 1 ¼” hole in intake at the bottom
Small grommet completely seated in 1 ¼” hole
Install the diaphragm cap over the end of the sound tube hose barb that comes in through the firewall under. You will need a second hand to hold the sound tube on the other side while pushing the diaphragm cap onto the hose barb end coming through the firewall. Important the diaphragm cap keeps the sound tube completely sealed and ensures the inlet and MAF doesn’t leak unmetered air.
Reach up under the dash and push the cap into the end of the sound tube sticking through the inside of the firewall. The diaphragm cap must be used to seal off the sound tube from the inlet path, this ensures the MAF and calibration is not changed. Use supplied grease on the hose end and push the cap over the end of the sound tube. Do NOT push on the clear thin membrane, it must remain tight after install. Warning: failure to install the diaphragm cap properly could result in unmetered air and a lean condition. We appreciate your business and hope you enjoy the increased rotor whine. Visit us again to view the new products on offer at FosterSCMods.com