My custom OEM section 1 cats with EGT & o2 sensors bungs

Gtfour · 01-29-2013, 10:03 PM

Just want to share some pics so you guys know how your OEM cats look like without the sheet metal.

I bought this OEM section 1 couple of months ago for $250 shipped. Previous owner said it was damaged. I have a lot of E46 M3 leftovers parts at home. My goal was to replace the damaged cats and put 2 OEM E46 M3 s-pipe resonator instead to create an anti rasp pipe if the cats were really in bad shape. But I previously modified a couple of those section 1 and I was pretty sure the cats were fine.

Here is what the damage look like:

So I cut the damaged area to see if cats were in good shape. I cut it like this because I was maybe going to reuse the sheet metal.

Then what I taught was confirmed, the cats were in perfect shape, YEAH!:

Then I fabricated the bungs. The o2 sensors bungs are Vibrant 45deg bungs. The EGT sensor bung is a M14X1.5 screws (or a VW wheel bolt) that I drilled in the center to a 7.45mm ID, 25mm long.

http://vibrantperformance.com/catalo...dfb81ec55a927d

Here is the final result:

Hope you enjoy!

kennyfrc · 01-29-2013, 10:09 PM

Did you replace the heat shield?

onebluemcm · 01-29-2013, 11:37 PM

nice thread, nice pics of the system without the shields. I wonder if the mid pipe could be reworked with these cats and followed up by resonators such as AR20s or the like, all in the rearward section of the midpipe?

Nice welding BTW!

beta · 01-30-2013, 12:58 AM

Wow great job, that looks oem.

Gtfour · 01-30-2013, 06:14 AM

No I decided to install wihout the heat shield. I put some exhaust wrap instead

Gtfour · 01-30-2013, 06:19 AM

Quote:

Originally Posted by onebluemcm

nice thread, nice pics of the system without the shields. I wonder if the mid pipe could be reworked with these cats and followed up by resonators such as AR20s or the like, all in the rearward section of the midpipe?

Nice welding BTW!

It's possible to to a custom S pipe with resonators in it. But the exhaust flow will hit those resonators before the cats (cats are near the X pipe flange)

Jumbosock · 01-31-2013, 03:25 PM

Great job! As an FYI to anyone the Euro cats are twice as long as the North American secondary cats. The euro cats extend almost all the way to the flange and fill out the entire area under the heat shields.

Gtfour · 01-31-2013, 06:49 PM

Quote:

Originally Posted by Jumbosock

Great job! As an FYI to anyone the Euro cats are twice as long as the North American secondary cats. The euro cats extend almost all the way to the flange and fill out the entire area under the heat shields.

Exact. US cats must be less restrictive than the Euro version in that case.

johanness · 02-01-2013, 01:27 AM

Quote:

Originally Posted by Gtfour

No I decided to install wihout the heat shield. I put some exhaust wrap instead

Nice job, however I don't think it's wise running around w/o the heat shield. Is the wrap a temporary thing?

Gtfour · 02-01-2013, 05:42 AM

Quote:

Originally Posted by johanness

Nice job, however I don't think it's wise running around w/o the heat shield. Is the wrap a temporary thing?

Why? Almost all aftermarket section 1 with cats or not don't have heat shield.

johanness · 02-02-2013, 02:01 AM

Quote:

Originally Posted by Gtfour

Why? Almost all aftermarket section 1 with cats or not don't have heat shield.

I'm just thinking about your secondary O2 wires, but it depends how you ran them. Theres not a lot of room and its gonna get HOT, but hope it works out.

Gtfour · 02-02-2013, 10:38 AM

I have an asbestos wire protector on the o2 sensors

01-29-2013, 10:03 PM	#1
Gtfour Lieutenant Drives: BMW E86 ///M Join Date: Jan 2012 Location: Montreal Posts: 406 iTrader: (3)	My custom OEM section 1 cats with EGT & o2 sensors bungs Just want to share some pics so you guys know how your OEM cats look like without the sheet metal. I bought this OEM section 1 couple of months ago for $250 shipped. Previous owner said it was damaged. I have a lot of E46 M3 leftovers parts at home. My goal was to replace the damaged cats and put 2 OEM E46 M3 s-pipe resonator instead to create an anti rasp pipe if the cats were really in bad shape. But I previously modified a couple of those section 1 and I was pretty sure the cats were fine. Here is what the damage look like: So I cut the damaged area to see if cats were in good shape. I cut it like this because I was maybe going to reuse the sheet metal. Then what I taught was confirmed, the cats were in perfect shape, YEAH!: Then I fabricated the bungs. The o2 sensors bungs are Vibrant 45deg bungs. The EGT sensor bung is a M14X1.5 screws (or a VW wheel bolt) that I drilled in the center to a 7.45mm ID, 25mm long. http://vibrantperformance.com/catalo...dfb81ec55a927d Here is the final result: Hope you enjoy! __________________ #1013 E86 M:: ESS VT1-445 : CSL headers : Performance Friction Z45/Z29 BBK : KW Clubsport : Hyperco 650/750 : CCW Classic's : Pirelli Tropheo & DH Slicks : 4.10 diff : Recaro Pole Position : Jaffster knob : AutoSolution SSK : OMP 1010 pedals : AIM Solo : Strong Strut braces : H&R front swaybar : APR CF splitter : APR GTC-200 CF wing : 42 Draft Design catch can : Custom hitch
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01-29-2013, 10:09 PM	#2
kennyfrc First Lieutenant Drives: 2008 Z4MC Join Date: Aug 2010 Location: ATL GA Posts: 318 iTrader: (1)	Did you replace the heat shield? __________________ Toy: 2008 Silver Z4MC 300WHP/241TQ Mods: OEM Euro Headers, RPI Scoop Daily: 2010 Tacoma Double Cab

01-29-2013, 11:37 PM	#3
onebluemcm Lieutenant Drives: '07 Z4MC Silbergrau Join Date: Apr 2010 Location: Richmond, VA Posts: 593 iTrader: (0)	nice thread, nice pics of the system without the shields. I wonder if the mid pipe could be reworked with these cats and followed up by resonators such as AR20s or the like, all in the rearward section of the midpipe? Nice welding BTW! Attached Images __________________ \|=.-._.-._.-._.-._.-._.-._.-._.-._.-._.-._.-.=\| Silbergrau A08 / Sepang Brown LSD6 / Carbon Leather 4MY (1 of 3, this combo) RAC RG63 \| Conti EC-DW \| GC/Koni-Dinan \| Rogue RSM \| Arqray \| Autosolutions \| BMW brace \| Pinnacle tint Last edited by onebluemcm; 01-29-2013 at 11:45 PM.

01-30-2013, 12:58 AM	#4
beta Major Drives: 2006 M Roadster Join Date: Mar 2011 Location: CA Posts: 1,412 iTrader: (1)	Wow great job, that looks oem. __________________ modification journal

01-30-2013, 06:14 AM	#5
Gtfour Lieutenant Drives: BMW E86 ///M Join Date: Jan 2012 Location: Montreal Posts: 406 iTrader: (3)	No I decided to install wihout the heat shield. I put some exhaust wrap instead __________________ #1013 E86 M:: ESS VT1-445 : CSL headers : Performance Friction Z45/Z29 BBK : KW Clubsport : Hyperco 650/750 : CCW Classic's : Pirelli Tropheo & DH Slicks : 4.10 diff : Recaro Pole Position : Jaffster knob : AutoSolution SSK : OMP 1010 pedals : AIM Solo : Strong Strut braces : H&R front swaybar : APR CF splitter : APR GTC-200 CF wing : 42 Draft Design catch can : Custom hitch

01-31-2013, 03:25 PM	#7
Jumbosock Lieutenant Drives: 2007 M coupe Join Date: Apr 2011 Location: San Diego Posts: 598 iTrader: (0)	Great job! As an FYI to anyone the Euro cats are twice as long as the North American secondary cats. The euro cats extend almost all the way to the flange and fill out the entire area under the heat shields. __________________ CSL headersEuro catsArqray exhaustDKF hangersEvolve TuneGenuine CSL rims10mm Macht Schnell front spacersmodified Hamann bumperTekarbon 2X2 CF spoilerTurner CF grillsAS SSKKWV3OEM Strut barRogue RSMPolyurethane anti-roll bar bushingsDeka ETX30L batteryNav Video modulefront & rear camerasIpod modulestubby antennaR-Dash LED license lights*LED Ziza interior lights

02-02-2013, 10:38 AM	#12
Gtfour Lieutenant Drives: BMW E86 ///M Join Date: Jan 2012 Location: Montreal Posts: 406 iTrader: (3)	I have an asbestos wire protector on the o2 sensors __________________ #1013 E86 M:: ESS VT1-445 : CSL headers : Performance Friction Z45/Z29 BBK : KW Clubsport : Hyperco 650/750 : CCW Classic's : Pirelli Tropheo & DH Slicks : 4.10 diff : Recaro Pole Position : Jaffster knob : AutoSolution SSK : OMP 1010 pedals : AIM Solo : Strong Strut braces : H&R front swaybar : APR CF splitter : APR GTC-200 CF wing : 42 Draft Design catch can : Custom hitch

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