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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Sat, Jan-12-2019, 01:38:13 PM   #141
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Default Re: American racing headers Results

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Originally Posted by S54 Madness View Post
Ill be installing my ARH on tomorrow... I noticed there is only 1 bung hole on the front collector but I have 2 on the car?? I just pmed the OP but I am not sure what to do with the 2nd O2 Sensor??
Just have a tuner code out 1 of the sensors...you only need 1.
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Old Sat, Jan-12-2019, 04:39:49 PM   #142
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Default Re: American racing headers Results

I see...

which sensor would I have them code out from the front? I am having Evolve send me my tune so I will have to tell him

Also, the O2 I leave out I am just leaving unpluggerd?
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Last edited by S54 Madness; Sat, Jan-12-2019 at 04:48:37 PM.
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Old Sat, Jan-12-2019, 08:51:14 PM   #143
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Default Re: American racing headers Results

Last question - The Exhaust temp sensor - will this be coded out as well for the tune?


I will dyno my car after headers are installed and post on here... I have the Karbounis airbox, RE racing pullies and eletric fan.... So Im pretty excited to see what results I will see!

My previous dyno was 291whp with a K&N CAI and a borla exhaust - this was corrected SAE numbers on a Dynojet Roller
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Last edited by S54 Madness; Sat, Jan-12-2019 at 09:07:40 PM.
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Old Sat, Jan-12-2019, 10:14:28 PM   #144
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Default Re: American racing headers Results

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Originally Posted by S54 Madness View Post
Last question - The Exhaust temp sensor - will this be coded out as well for the tune?


I will dyno my car after headers are installed and post on here... I have the Karbounis airbox, RE racing pullies and eletric fan.... So Im pretty excited to see what results I will see!

My previous dyno was 291whp with a K&N CAI and a borla exhaust - this was corrected SAE numbers on a Dynojet Roller
EGT and rear O2 can be left unplugged when you get the new tune.

For the front O2, you will need to make sure you remove/unplug the right bank vs what is in the tune, so coordinate with the tuner.

Sent from my SM-G950U using Tapatalk
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Old Sat, Jan-12-2019, 11:02:40 PM   #145
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Default Re: American racing headers Results

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Originally Posted by mrgizmo04 View Post
EGT and rear O2 can be left unplugged when you get the new tune.

For the front O2, you will need to make sure you remove/unplug the right bank vs what is in the tune, so coordinate with the tuner.

Sent from my SM-G950U using Tapatalk

I have 2 bungs for the rear / section 1 part of the exhaust.. I assumed Id put both rear O2s in the rear? So I am to only put ONE O2 in the rear and coordinate with the tuner which one is plugged in the rear aswell?

See below how section one looks on the ARH



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Last edited by S54 Madness; Sat, Jan-12-2019 at 11:08:32 PM.
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Old Sat, Jan-12-2019, 11:05:39 PM   #146
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Default Re: American racing headers Results

I can only imagine the flap closed helps in some way with low speed/mid throttle drive-ability. Not power in any way. Throttle smoothness maybe?
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Old Sat, Jan-12-2019, 11:14:00 PM   #147
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Default Re: American racing headers Results

Quote:
Originally Posted by S54 Madness View Post
I have 2 bungs for the rear / section 1 part of the exhaust.. I assumed Id put both rear O2s in the rear? So I am to only put ONE O2 in the rear and coordinate with the tuner which one is plugged in the rear aswell?

See below how section one looks on the ARH



I dont think you need the rear at all unless your tuner wants the readout and to see some calibration. Rear o2 usually sit behind the catalytic converter to monitor oxygen flow behind the catalyst.

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'85 528e 164k miles (sold)
'05 M3 6MT coupe

All DIY: VANOS, WPC rod bearings, full SS (SS stepped V1 headers, catted S1, stock S2, SS sport), AFD E85 Proflex kit, Ohlins R&T/Hyperco 375f Swift 672r/GC street tops and camber plates, ST40 355 pfc08, 330 ZHP steering rack, diffsonline 4.1 diff with rem polish, E60 short shifter lever, AKG black diff bushings/subframe bushings, Rogue rtab, Sachs clutch/flywheel, rear main, Beyer driveshaft, valve adjustment, cooling refresh.

Happy to help with VANOS or any other DIY job around NorCal. Have various specialty tools (VANOS, RTAB, engine bar, valve adjustment, tranny jack, ball joint separator, pilot bearing puller, tap&die kit, etc).
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Old Sun, Jan-13-2019, 12:22:03 AM   #148
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Default Re: American racing headers Results

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Originally Posted by Sandeep1212 View Post
I can only imagine the flap closed helps in some way with low speed/mid throttle drive-ability. Not power in any way. Throttle smoothness maybe?
Nope.
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Old Sun, Jan-13-2019, 12:34:45 AM   #149
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Default Re: American racing headers Results

Quote:
Originally Posted by S54 Madness View Post
I see...

which sensor would I have them code out from the front? I am having Evolve send me my tune so I will have to tell him

Also, the O2 I leave out I am just leaving unpluggerd?
Just seeing this, sorry man...just figured your tuner would’ve handled this part for you? Anyway, the ARH system (being designed as more or less a max racing effort system) only has provisions for three O2 sensors—1 pre-cat O2 sensor, and 2 post-cat O2 sensors. I don’t believe that it makes much difference which pre-cat O2 gets deleted, and you can just leave both post-cat O2’s plugged in and your tuner of choice can handle how they set up O2 function. Also, as mrgizmo stated, the EGT gets coded out as well.
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Old Sun, Jan-13-2019, 02:50:02 PM   #150
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Default Re: American racing headers Results

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Originally Posted by stash1 View Post
Just seeing this, sorry man...just figured your tuner would’ve handled this part for you? Anyway, the ARH system (being designed as more or less a max racing effort system) only has provisions for three O2 sensors—1 pre-cat O2 sensor, and 2 post-cat O2 sensors. I don’t believe that it makes much difference which pre-cat O2 gets deleted, and you can just leave both post-cat O2’s plugged in and your tuner of choice can handle how they set up O2 function. Also, as mrgizmo stated, the EGT gets coded out as well.
Thanks for clarifying!
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Discussing American racing headers Results in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)