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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 > Bmw PE + Secondary cat delete on n51 ( Video )



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      12-21-2016, 09:25 PM   #1
Misty
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Bmw PE + Secondary cat delete on n51 ( Video )

Took a quick video of driving around..
Car is an 08 328xi 6AT
afe intake pro 2 si
aa tune ( car has stage three im)
Secondary cats are gutted

Exhaust was installed feb 2 2016 at 71644
this video was before secondary cat delete 5 days after install



the secondary cats were deleted on may 21st 2016 i dont remember what miles it was at though. originally i was supposed to cut and replace with 3" piping but my friend didnt have any stainless steel piping so he cut em open and gutted em for me. The main reason i did this was for noise / Burbles. and from the before and after holy shit it makes a huge difference 60$ well fucking spent imo lol. My next move is too find someone to gut my primary cats ive been quoted at 650$ due to the tight space and labor to remove em. aa headers are only 200$ more though. hopefully after the primaries are deleted the burbles will be more pronounced. anyways here is the after video of cruising around.
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      12-21-2016, 11:50 PM   #2
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sounds great. I would just go with headers.
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      12-22-2016, 06:26 AM   #3
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Sounds so sick. How is drone and overall volume compared with before the cats were deleted?
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      12-22-2016, 06:46 AM   #4
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Quote:
Originally Posted by boro92 View Post
Sounds so sick. How is drone and overall volume compared with before the cats were deleted?
im 17 lol drone is something i dont care too much about. but honestly i findit quiet in drive mode.. but above 3k rpm and it sounds aggressive. also have a subwoofer so im bumping often drone dosent affect me
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      12-23-2016, 06:25 PM   #5
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asked bpc for a burble tune may be possible any one know if i can use my simon cable with them
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      12-24-2016, 06:28 PM   #6
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Quote:
Originally Posted by Misty View Post
Took a quick video of driving around..
Car is an 08 328xi 6AT
afe intake pro 2 si
aa tune ( car has stage three im)
Secondary cats are gutted

Exhaust was installed feb 2 2016 at 71644
this video was before secondary cat delete 5 days after install



the secondary cats were deleted on may 21st 2016 i dont remember what miles it was at though. originally i was supposed to cut and replace with 3" piping but my friend didnt have any stainless steel piping so he cut em open and gutted em for me. The main reason i did this was for noise / Burbles. and from the before and after holy shit it makes a huge difference 60$ well fucking spent imo lol. My next move is too find someone to gut my primary cats ive been quoted at 650$ due to the tight space and labor to remove em. aa headers are only 200$ more though. hopefully after the primaries are deleted the burbles will be more pronounced. anyways here is the after video of cruising around.
Do you have also resonator delete?
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      12-24-2016, 06:57 PM   #7
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Resonator delete is part of PE...
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      12-24-2016, 11:05 PM   #8
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Quote:
Originally Posted by Misty View Post
asked bpc for a burble tune may be possible any one know if i can use my simon cable with them
Sadly, I confirmed this a while back, impossible to utilize the simon with their tune. :/
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      12-24-2016, 11:28 PM   #9
dancing__narwhal
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How do you like the AA tune? Have you had the car dyno'd with the 3 stage + intake + exhaust combo?
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      12-25-2016, 01:20 AM   #10
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Quote:
Originally Posted by dgaultiere View Post
How do you like the AA tune? Have you had the car dyno'd with the 3 stage + intake + exhaust combo?
compared to stock it was a big difference after a month i wanted more never dynoed
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      12-25-2016, 09:04 AM   #11
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Well you could always wait for the BPC turbo kit

Have you run the tune by itself (without intake manifold and exhaust)? I'm considering getting a tune for my 328i and then adding the IM and exhaust over time.
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      12-25-2016, 10:53 AM   #12
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Quote:
Originally Posted by dgaultiere View Post
Well you could always wait for the BPC turbo kit

Have you run the tune by itself (without intake manifold and exhaust)? I'm considering getting a tune for my 328i and then adding the IM and exhaust over time.
n51 car had 3 st im. from what i remember i did the tune and then exhaust a week later
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      12-25-2016, 12:58 PM   #13
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Oh I didn't realize you were on n51 — should've read the title better

Thanks! Exhaust sounds great!
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      12-25-2016, 12:59 PM   #14
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Quote:
Originally Posted by Noir View Post
Sadly, I confirmed this a while back, impossible to utilize the simon with their tune. :/
shiet well that sucks lol spent a few hundo on it
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      01-02-2017, 09:47 AM   #15
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OP do you really felt difference with tune on your n51?
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      01-03-2017, 08:38 AM   #16
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Quote:
Originally Posted by Captain comic View Post
OP do you really felt difference with tune on your n51?
throttle response def made a huge difference i may flash back too stock soon trying to get AA to give me a burble tune 1pm a day and hopefully they will get back to me lolol
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