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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > Factory Header Cat Delete!!!!! ( PICS INSIDE )



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      12-29-2011, 09:09 PM   #1
DJ Apex
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Factory Header Cat Delete!!!!! ( PICS INSIDE )

Well since i love my new system i built i wanted to go one step more and delete the main cats. Well its something that dont take no 3-4 hours try 8-9 hours lol. I still gotta buy the factory lead gaskits to replace all of them and i lost one bolt. And i need to rewrap the headers i dont like how it came out so FAIL 3 times today for me!
well heres pics sorry for not really going into the pics but ill edit it later on ive been up since 4am and im so played out!
HATERS ENJOY













VIDEO UPDATE!!! sorry for crappy video im get a better one tonight


Last edited by DJ Apex; 12-30-2011 at 06:01 PM.
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      12-29-2011, 09:42 PM   #2
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Make some affordable ones! Give Gavin some competition. 1000 is way too much. OBX to fix theirs to fit and I would be all over them.
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      12-29-2011, 10:09 PM   #3
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Make some affordable ones! Give Gavin some competition. 1000 is way too much. OBX to fix theirs to fit and I would be all over them.
what he said I'm all in let's get this done I will def but
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      12-29-2011, 10:12 PM   #4
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lol @ 3 fails... so, what kind of material you using to weld in the gap now?
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      12-29-2011, 10:28 PM   #5
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lol @ 3 fails... so, what kind of material you using to weld in the gap now?
old pennys lol just kidding they fit flush we just used that to mock up were we need to weld at we ended up expanding the factory pipe to 2.5 to fit even and welded it all up! i have 25miles on it and still no SES light im waiting for the ECU to readapt and then all hell time for tune
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      12-29-2011, 10:31 PM   #6
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tehehe **edit** you give it a test drive and sound video yet?
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      12-29-2011, 10:33 PM   #7
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Make some affordable ones! Give Gavin some competition. 1000 is way too much. OBX to fix theirs to fit and I would be all over them.
ide love to but i need factory headers to do so im not about to make a new flange and make new piping for each exhaust port. lol im to lazy
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      12-29-2011, 10:36 PM   #8
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ide love to but i need factory headers to do so im not about to make a new flange and make new piping for each exhaust port. lol im to lazy
Wish OBX would get their shit together. So cheap and even if the welds are bad you could buy, have a shop fix the welds and still be mad cheap.

Its a shame they are so far off from fitting. How do you make a product that doesn't fit its application? I emailed and asked them and they didn't reply. They are missing out on a big opportunity.
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      12-29-2011, 10:37 PM   #9
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tehehe **edit** you give it a test drive and sound video yet?
Test Drive AMAZING loving it! pulls strong and ill get video and sound tomarrow.
it sounds like a e46 m3 at high revs . idk video just wont do it lol i know it wont
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      12-29-2011, 10:50 PM   #10
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another question... what are you doing about the O2 error code? can you code something like that out?
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      12-29-2011, 11:01 PM   #11
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another question... what are you doing about the O2 error code? can you code something like that out?
AA Off Road Tune solves that.
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      12-30-2011, 12:41 AM   #12
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AA Off Road Tune solves that.
oh... well fck me...
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      12-30-2011, 01:03 AM   #13
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oh... well fck me...
DIBS


oh did i mention this cost me $130 lol
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      12-30-2011, 01:19 AM   #14
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DIBS


oh did i mention this cost me $130 lol
shit... well fck me hrdr... >__< i already paid my $850 for the ceramic red headers... at least they'll look better than wrapped headers.
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      12-30-2011, 03:48 AM   #15
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Do you have a shot of the finished product without the wrap?
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      12-30-2011, 08:24 AM   #16
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You need to get your car on a dyno son !!

I've been contemplating deleting the headers and going back to my oem muffler. With a res delete.

I want to keep the secondaries in because I need to pass visual inspection.
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      12-30-2011, 09:30 AM   #17
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shit... well fck me hrdr... >__< i already paid my $850 for the ceramic red headers... at least they'll look better than wrapped headers.
they might look better but mine will stay 10x cooler
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      12-30-2011, 09:31 AM   #18
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Do you have a shot of the finished product without the wrap?
no sorry thats all the pics i took . ill take some when i rewrap my headers
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      12-30-2011, 09:32 AM   #19
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You need to get your car on a dyno son !!

I've been contemplating deleting the headers and going back to my oem muffler. With a res delete.

I want to keep the secondaries in because I need to pass visual inspection.
Dyno jan 28th! lol im excited to!
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      12-30-2011, 09:33 AM   #20
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This is badass
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      12-30-2011, 09:35 AM   #21
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My factory headers are quite different. Without the cats they would be even better.



Does anybody know these sims? Do they work?

http://www.bigdaddiesgarage.com/?gcl...FRxqgwod5BsdGg
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      12-30-2011, 09:52 AM   #22
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My factory headers are quite different. Without the cats they would be even better.



Does anybody know these sims? Do they work?

http://www.bigdaddiesgarage.com/?gcl...FRxqgwod5BsdGg
euro header? idk lol i like yours wish mine were like that the flow would be amazing.

And yes they do work i used 4 spark plug foulers. I had to drill them out to let the o2 sit right. but i used two on each o2 and it cost me $6.59 lol
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