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Old 02-18-2011, 09:45 AM   #441
BimmerBrakes
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Quote:
Originally Posted by darksideracer69 View Post
I wouldn't recommend it, my car ran sluggish without the sims or cats installed
Never had an issues. Not running sims. The post o2 sensor has nothing to do with air/fuel mixture of the car. The post u2 sensor is there to make sure your cats are working correctly.

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Old 02-18-2011, 10:23 AM   #442
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Never had an issues. Not running sims. The post o2 sensor has nothing to do with air/fuel mixture of the car. The post u2 sensor is there to make sure your cats are working correctly.

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That would make sense. I'll install them and just put my pre-cat sensors in while I wait for the sims.
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Old 02-18-2011, 11:15 AM   #443
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Yea man check it out
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Old 02-18-2011, 12:36 PM   #444
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Quote:
Originally Posted by Anthony@BimmerBrakes View Post
Never had an issues. Not running sims. The post o2 sensor has nothing to do with air/fuel mixture of the car. The post u2 sensor is there to make sure your cats are working correctly.

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+1 Thats what I tried to say earlier.
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Old 02-18-2011, 04:28 PM   #445
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That would make sense. I'll install them and just put my pre-cat sensors in while I wait for the sims.
You still need to install the post o2 sensor as well. You will be splicing one wire of the o2 sensor harness to give the sim signal wire.

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Old 02-18-2011, 05:02 PM   #446
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Idk y I had issues then? Even when the post o2 sensor was just a little unscrewed it would make my car run sluggish
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Old 02-22-2011, 04:37 PM   #447
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Idk y I had issues then? Even when the post o2 sensor was just a little unscrewed it would make my car run sluggish
O2 sensor still need to be plugged up. As it still need the header circuit and signal from the o2. With the sim install it just send the correct variables then before.

*Updates*

Coating should be done Friday and Shipped as well.

O2 Sims are almost done and shipping on Friday as well.


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Old 02-24-2011, 01:01 PM   #448
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Old 02-25-2011, 02:28 PM   #449
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Do you have any idea when this Chinese New Year break from manufacturing will be over? Will there be another group buy?

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Old 02-28-2011, 09:40 AM   #450
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*Updated*

0. Anthony@BimmerBrakes, 2005 330i Sedan, (Any Available Color) Ceramic Coated Headers
1. geargrinder, E46 M3, Titanium Ceramic Coated M3 Headers (Shipped)
2. cbrommer, 2004 325i Sedan, Ceramic-Metallic (Canceled)
3. NerdCore 2002 325i Sedan, Ceramic-Black and o2 sim (Canceled)
4. destroyeerr, 330ci, SS and o2 sim (Shipped)
5. Boehm330, 2001 330Ci, Ceramic-Metallic and o2 sim (Shippped)
6. R0B, 2004 330i zhp, Ceramic-Metallic and o2 sim (Shipped)
7. bignickmetro, 2002 330Ci, SS and o2 sim (Shipped)
8. scottz, 2001 325xi, Ceramic-Metallic and o2 sim (Shipped)
9. key-no, 2003 325i, SS and o2 sim (Canceled)
10. rictrd, 2001 330i, SS and o2 sim (Shipped)
11. nedined, 2004 330Xi O2 sim only (Shipped)
12. spngr311, 2002 330ci, SS (Shipped)
13. ArmyJon, 2000 323iT, Ceramic-Black and o2 sim (Shippped)
14. theViking, 2003 330XI, SS and o2 sim (Shipped)
15. Adame46man, 2005 330i sedan, ceramic black o2 sim (Shipped)

*o2 Sims are shipping now

Quote:
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Do you have any idea when this Chinese New Year break from manufacturing will be over? Will there be another group buy?

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Ending of May. Then it will be 2-3 weeks before I receive any new headers.

-Anthony@BimmerBrakes

Last edited by BimmerBrakes; 02-28-2011 at 09:43 AM.
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Old 03-03-2011, 12:36 PM   #451
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Just installed them, didn't used the o2 sim, my 330i didn't have post cat o2 sensor It did felt more smooth the acceleration, goona dyno it tomorrow...
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Old 03-03-2011, 02:29 PM   #452
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Give it about 100 miles. Mine was like that for a day or two, then it threw a CEL.
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Old 03-03-2011, 04:58 PM   #453
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Give it about 100 miles. Mine was like that for a day or two, then it threw a CEL.
takes about 40 miles.
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Old 03-03-2011, 06:24 PM   #454
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Don't think it will through CEL as my car is Europe version, it doesn't come with post cat sensors...
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Old 03-03-2011, 11:19 PM   #455
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Old 03-04-2011, 10:06 AM   #456
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My dyno results before and after Anthony's headers:

Sorry don't have dyno sheet as they went out of paper, they will email me the dyno chart later...

My 330i is bone stock, stock air box, stock exhaust system, stock ECU... Went wendnesday to the dyno without headers 189whp/193tq, installed headers thursday, get back to dyno today friday 195whp/201tq... 6whp and 8lb/ft more with just headers... I think with chip tuning, air intake or exhaust system mods will get more whp/tq...

Last edited by rictrd; 03-04-2011 at 10:07 AM.
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Old 03-04-2011, 11:17 AM   #457
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My dyno results before and after Anthony's headers:

Sorry don't have dyno sheet as they went out of paper, they will email me the dyno chart later...

My 330i is bone stock, stock air box, stock exhaust system, stock ECU... Went wendnesday to the dyno without headers 189whp/193tq, installed headers thursday, get back to dyno today friday 195whp/201tq... 6whp and 8lb/ft more with just headers... I think with chip tuning, air intake or exhaust system mods will get more whp/tq...

I think if everything else is stock that's a good gain, but add other stuff to make the air get in and out easier
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Old 03-04-2011, 03:31 PM   #458
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I think if everything else is stock that's a good gain, but add other stuff to make the air get in and out easier
You mean an exhaust system? I don't like to have loud sound... All the system I have seen have a loud sound. Is there a good exhaust system with very low sound?
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Old 03-04-2011, 03:41 PM   #459
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You mean an exhaust system? I don't like to have loud sound... All the system I have seen have a loud sound. Is there a good exhaust system with very low sound?
building it right - basically you need to up the diameter but put certain elements in the way (aero resonators) and a good muffler to quite it down, but in many cases sound = power. if you try to stiffle it you are also hurting the flow and decreasing power, I would suggest you stay with the stock exhaust if you are unwilling to work with a louder one.
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Old 03-04-2011, 04:31 PM   #460
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You mean an exhaust system? I don't like to have loud sound... All the system I have seen have a loud sound. Is there a good exhaust system with very low sound?
Exhaust, intake, throttle body, idk what car you have maybe a m54b30 swap. And yes power=sound but I think you can gain some power and not have such a loud car.
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