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      02-28-2013, 09:52 AM   #45
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Would it throw an error for the HFC ?
Am driving the M135 also with N55 engine which is the same as F30 335.. But should be different ecu tune.
So not really sure if it does throw error...
Anybody can help..

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      02-28-2013, 11:04 AM   #46
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Originally Posted by shivaswrath View Post
love the pop in sport with the HFC DP...godamn it's tempting.

Any CELs yet? I know I keep asking, but I realize it probably takes 2 tanks of gas for the ECU to cycle.
Apparently, that is the question everyone wants to know. I'd presume Challenge or someone who has installed it should be able to give a yes/no answer easily.
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      02-28-2013, 11:12 AM   #47
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Apparently, that is the question everyone wants to know. I'd presume Challenge or someone who has installed it should be able to give a yes/no answer easily.
i keep asking and no one is answering...which kind of means to me there are.
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      02-28-2013, 01:49 PM   #48
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So far so good. No check engine light here and it's been on the car since January 30th and just about 1000 miles.

:knockonwood:
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      02-28-2013, 02:08 PM   #49
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So far so good. No check engine light here and it's been on the car since January 30th and just about 1000 miles.

:knockonwood:
that's pretty long - like 2.5 tanks of gas.

I'm going to assume you don't have a juice box either?
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      02-28-2013, 02:35 PM   #50
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Quote:
Originally Posted by shivaswrath View Post
that's pretty long - like 2.5 tanks of gas.

I'm going to assume you don't have a juice box either?
Power mods are the injen intake, jb stage 1, challenge hfc downpipe, and full meisterschaft gtc sytem. All were installed at the same time except the intake, which was installed a week later.
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      02-28-2013, 02:49 PM   #51
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Quote:
Originally Posted by m3 guy
Power mods are the injen intake, jb stage 1, challenge hfc downpipe, and full meisterschaft gtc sytem. All were installed at the same time except the intake, which was installed a week later.
What are your thoughts on the injen intake? If its black, can you take a pic?
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      02-28-2013, 03:10 PM   #52
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What are your thoughts on the injen intake? If its black, can you take a pic?
Pics

Not to get too off topic but I love the sound. You can hear the blow off valve, you can hear the spooling, and you can hear the hissing. It's a great compliment to the downpipe/full exhaust system. Car sounds and feels beastly now.
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Last edited by m3 guy; 02-28-2013 at 04:04 PM.
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      02-28-2013, 03:34 PM   #53
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That actually looks really good, thanks for posting.
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      03-26-2013, 02:00 PM   #54
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sounds great - any answer on whether or not this voids the warranty?
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      03-26-2013, 02:18 PM   #55
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Quote:
Originally Posted by adk1411 View Post
sounds great - any answer on whether or not this voids the warranty?
Most dealerships wont give you a problem about it. If you have some major failure or something is the only time i would put your car back to stock as much as possible. BMW cannot void your warranty for having an exhaust part installed randomly.
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      03-28-2013, 07:37 PM   #56
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Just got my ER downpipe installed today at M Power here in Houston. Was definitely a quick job and the results are great. This definitely makes the car sound much beefier and more fun to drive. With the downpipe and bms stage 2 the car is a completely different beast and I don't regret going catless one bit.
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      03-28-2013, 09:29 PM   #57
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Quote:
Originally Posted by anelson524 View Post
Just got my ER downpipe installed today at M Power here in Houston. Was definitely a quick job and the results are great. This definitely makes the car sound much beefier and more fun to drive. With the downpipe and bms stage 2 the car is a completely different beast and I don't regret going catless one bit.
I've heard outside the car at idle it has a 'smell'. Thoughts?
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      03-28-2013, 09:46 PM   #58
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Quote:
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I've heard outside the car at idle it has a 'smell'. Thoughts?
Mine is catless and i do not smell anything, LOVE the sound!
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      03-28-2013, 10:02 PM   #59
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Get on that tdizzle!
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      03-28-2013, 11:06 PM   #60
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Quote:
Originally Posted by tdizzle View Post
I've heard outside the car at idle it has a 'smell'. Thoughts?
I haven't noticed anything yet but I'm also driving it and never really outside of the car at idle. I've walked around after driving it .... spiritedly and haven't really noticed anything that caught my attention and I'm trying to see if there is actually a smell. Also no CEL yet either but I'm in Map 2 and only a half tank in.
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      03-29-2013, 12:30 AM   #61
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So basically no one is running a HFC DP bones stock to see if CELs come up...?
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      03-29-2013, 06:42 AM   #62
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I got a cel with Catless DP and stage 1. Waiting for stage 2 to clear it

Quote:
Originally Posted by shivaswrath View Post
So basically no one is running a HFC DP bones stock to see if CELs come up...?
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      03-29-2013, 06:56 AM   #63
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I'm almost sure that once you get a thousand or so miles through that catless DP, it will start to STANK
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      03-29-2013, 07:22 AM   #64
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I have almost 2,500 miles on it and don't smell anything different from stock.

Quote:
Originally Posted by mikew2069 View Post
I'm almost sure that once you get a thousand or so miles through that catless DP, it will start to STANK
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      03-29-2013, 09:30 AM   #65
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Quote:
Originally Posted by mikew2069 View Post
I'm almost sure that once you get a thousand or so miles through that catless DP, it will start to STANK
That's what the consensus seemed to be, which is why I asked.

Also, if you're running Stage 2 JB4, I think it has the auto delete code for downpipes built in, so you won't see any unless you're stage 1 or no tune at all.
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      03-29-2013, 09:31 AM   #66
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Get on that tdizzle!
Killing me! You're a terrible influence!

Where are your slips from last night!?
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