Intake Silencer Removal Mod Update for 2002 4Runners

Bob_98SR5 · 12-31-2005, 04:14 PM

Intake Silencer Removal Mod Update
For 2002 4Runners

1/2/2003

Paul (ALBPM on the forums) shows you how he did the Dr. Z intake mod, and had to do a few things differently on the 2002 engine.

Here's the Revised Mod for a 2002 4x4 4-Runner as the engine differs from the 2001 and earlier models. Notice the lack of a hose port on the plenum below for the 2002 engine.

Step 1:
This is the FPR hose that was attached to the Air Silencer Box - Now removed and replaced with a Stainless Steel Pipe. It won't be needed so remove it.

Step 2:
Locate the "Capped Off" Steel tube coming out of the rear of the plenum. Remove the cap. You will also see a length of unused steel tube on the top of the plenum.

Step 3:
Locate the round FPR unit behind the plenum. Remove the piece of vacuum tubing that connects it to the steel pipe running under the plenum to the front. You have already removed the larger hose from the front end of this steel tube in Step 1.

Step 4:
Now you are ready to add the new Vacuum Hose to connect the unused line coming out of the rear of the plenum to the FPR unit. I bought 2 ft of NAPA part # H-459 it cost a whole $1.25
You will need ~3.25" to connect the capped end to the steel tube. (right side in picture)

Step 5:
You will need ~11" to connect this end of the steel tube to the FPR unit.

Now, pull the EFI fuse out for a few minutes and you are done...

Total cost for the 2002 and possibly 2001 Mod done this way was $6.25 total.

$5.00 for the stainless pipe that replaced the Silencer Box and $1.25 for 2 ft of the NAPA vacuum hose (part # H-459).

Here is the mod in place on Paul's engine.

If you choose to do this mod good luck, and if you have any questions PM ALBPM.

12-31-2005, 04:14 PM	#1 (permalink)
Bob_98SR5 Contributing Member Join Date: May 2002 Location: Los Angeles Posts: 10,115	Intake Silencer Removal Mod Update for 2002 4Runners Intake Silencer Removal Mod Update For 2002 4Runners 1/2/2003 Paul (ALBPM on the forums) shows you how he did the Dr. Z intake mod, and had to do a few things differently on the 2002 engine. Here's the Revised Mod for a 2002 4x4 4-Runner as the engine differs from the 2001 and earlier models. Notice the lack of a hose port on the plenum below for the 2002 engine. Step 1: This is the FPR hose that was attached to the Air Silencer Box - Now removed and replaced with a Stainless Steel Pipe. It won't be needed so remove it. Step 2: Locate the "Capped Off" Steel tube coming out of the rear of the plenum. Remove the cap. You will also see a length of unused steel tube on the top of the plenum. Step 3: Locate the round FPR unit behind the plenum. Remove the piece of vacuum tubing that connects it to the steel pipe running under the plenum to the front. You have already removed the larger hose from the front end of this steel tube in Step 1. Step 4: Now you are ready to add the new Vacuum Hose to connect the unused line coming out of the rear of the plenum to the FPR unit. I bought 2 ft of NAPA part # H-459 it cost a whole $1.25 You will need ~3.25" to connect the capped end to the steel tube. (right side in picture) Step 5: You will need ~11" to connect this end of the steel tube to the FPR unit. Now, pull the EFI fuse out for a few minutes and you are done... Total cost for the 2002 and possibly 2001 Mod done this way was $6.25 total. $5.00 for the stainless pipe that replaced the Silencer Box and $1.25 for 2 ft of the NAPA vacuum hose (part # H-459). Here is the mod in place on Paul's engine. If you choose to do this mod good luck, and if you have any questions PM ALBPM.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
98 intake silencer removal mod	jrock	95.5-2004 Tacomas & 96-2002 4Runners	4	03-16-2007 04:09 PM
intake silencer removal mod almost complete	2wheeler97	95.5-2004 Tacomas & 96-2002 4Runners	2	12-21-2002 02:24 PM
intake silencer removal mod.	2wheeler97	95.5-2004 Tacomas & 96-2002 4Runners	3	12-18-2002 10:09 PM
intake silencer removal mod	2wheeler97	95.5-2004 Tacomas & 96-2002 4Runners	6	11-22-2002 05:43 AM
Intake Silencer Mod *UPDATE*	Dr. Zhivago	95.5-2004 Tacomas & 96-2002 4Runners	40	10-29-2002 08:53 AM