Exhaust help, Please!

Boostin135 · 03-10-2012, 05:11 PM

First of all sorry for the long post but here is the story leading to the issue.. Ok so about 2 days ago I got my Agency Power turbo back exhaust installed. Looks good, sounds good. Today, after work, I get in and start it, and I see a service engine soon light. I'm a little suprised but kinda figured it would happen and was going to take it back on monday to see what the issue is (I wont have my jb4 for about another month so I cant read codes right now ). On the way to the gym driving with my buddy we start messing around and racing a little bit. I got on it, maybe to about 5ish rpm to 4th gear and chilled out. Right after that I slow down and make a turn and accelerate only to get no pull. I can hear my turbos spooling, and the bov is barely blowing off, but I get no pulls from the turbo. WTF?? I drove it back home only doing 45 max and keeping it calm the whole way. My light is still on, the car seems to be running fine other than the issue I just explained, and it idles fine.. I'm thinking it has to be an exhaust issue (DP specifically), as I never had this happen prior to the exhaust install. My guy that put it on said he had an issue reaching the turbos to put the DP's on, but said other than that it was problem free. Does anyone have any input as what could be causing this?? PLEASE, and thank you!

Dackelone · 03-10-2012, 05:27 PM

So you have an axle back exhaust PLUS down pipes!?

Sounds like your installer screwed up the install. Its common to reinstall the DP clamps wrong. Then the turbo wastegate arms hit the DP clamp(s).

Boostin135 · 03-10-2012, 05:36 PM

Yea, its a full turbo back. Ok so sounds like an easy fix..? Are the clamps like backwards or something? I havent seen them so I'm just trying to get an idea of what the clamps are like..

ken1137 · 03-10-2012, 06:00 PM

+1 on impeding the actuator arm. Here ya go...I had the same problem after my DP install.

Name: Clamp.jpg
Views: 258
Size: 175.6 KB

pic from Hondagonerogue.

Boostin135 · 03-10-2012, 06:08 PM

Hmm.. ok.. doesnt seem like a big issue then.. thank you very much for the help. so because the bolt is hitting the actuator arm is it preventing the turbos from producing the boost, or holding it?

ken1137 · 03-10-2012, 06:42 PM

Yes, if not then you have a small leak somewhere. Good luck.

John Dempsey · 03-10-2012, 08:57 PM

If it not the arm I would check the charge pipev

Boostin135 · 03-11-2012, 09:50 AM

Yea the charge pipe and bov were the first things I checked. I also talked to a few people and they said it might be the o2 sensor? That's what came to mind to me at first but wouldn't the engine light have been on the entire time and not only after 2 days? Also would the sensor cause this type of problem?

03-10-2012, 05:11 PM	#1
Boostin135 Enlisted Member 7 Rep 40 Posts Drives: 2010 135i M sport Join Date: Mar 2012 Location: Killeen, TX iTrader: (0)	Exhaust help, Please! First of all sorry for the long post but here is the story leading to the issue.. Ok so about 2 days ago I got my Agency Power turbo back exhaust installed. Looks good, sounds good. Today, after work, I get in and start it, and I see a service engine soon light. I'm a little suprised but kinda figured it would happen and was going to take it back on monday to see what the issue is (I wont have my jb4 for about another month so I cant read codes right now ). On the way to the gym driving with my buddy we start messing around and racing a little bit. I got on it, maybe to about 5ish rpm to 4th gear and chilled out. Right after that I slow down and make a turn and accelerate only to get no pull. I can hear my turbos spooling, and the bov is barely blowing off, but I get no pulls from the turbo. WTF?? I drove it back home only doing 45 max and keeping it calm the whole way. My light is still on, the car seems to be running fine other than the issue I just explained, and it idles fine.. I'm thinking it has to be an exhaust issue (DP specifically), as I never had this happen prior to the exhaust install. My guy that put it on said he had an issue reaching the turbos to put the DP's on, but said other than that it was problem free. Does anyone have any input as what could be causing this?? PLEASE, and thank you!
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03-10-2012, 05:27 PM	#2
Dackelone European Editor 10589 Rep 22,992 Posts Drives: N54 e82 Join Date: Feb 2010 Location: Bayern, Germany iTrader: (1)	So you have an axle back exhaust PLUS down pipes!? Sounds like your installer screwed up the install. Its common to reinstall the DP clamps wrong. Then the turbo wastegate arms hit the DP clamp(s).
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03-10-2012, 05:36 PM	#3
Boostin135 Enlisted Member 7 Rep 40 Posts Drives: 2010 135i M sport Join Date: Mar 2012 Location: Killeen, TX iTrader: (0)	Yea, its a full turbo back. Ok so sounds like an easy fix..? Are the clamps like backwards or something? I havent seen them so I'm just trying to get an idea of what the clamps are like..
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03-10-2012, 06:00 PM	#4
ken1137 Brigadier General 89 Rep 3,732 Posts Drives: BMW S1000XR Join Date: Jun 2011 Location: Gilbert, AZ iTrader: (7) Garage List 2009 e90 335i [6.40]	+1 on impeding the actuator arm. Here ya go...I had the same problem after my DP install. pic from Hondagonerogue. __________________ BMWCCA member
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03-10-2012, 06:08 PM	#5
Boostin135 Enlisted Member 7 Rep 40 Posts Drives: 2010 135i M sport Join Date: Mar 2012 Location: Killeen, TX iTrader: (0)	Hmm.. ok.. doesnt seem like a big issue then.. thank you very much for the help. so because the bolt is hitting the actuator arm is it preventing the turbos from producing the boost, or holding it? Last edited by Boostin135; 03-10-2012 at 06:22 PM..
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03-10-2012, 06:42 PM	#6
ken1137 Brigadier General 89 Rep 3,732 Posts Drives: BMW S1000XR Join Date: Jun 2011 Location: Gilbert, AZ iTrader: (7) Garage List 2009 e90 335i [6.40]	Yes, if not then you have a small leak somewhere. Good luck. __________________ BMWCCA member
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03-10-2012, 08:57 PM	#7
John Dempsey Banned 31 Rep 588 Posts Drives: White 135i M-Sport Join Date: Sep 2011 Location: Encinitas iTrader: (0)	If it not the arm I would check the charge pipev
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03-11-2012, 09:50 AM	#8
Boostin135 Enlisted Member 7 Rep 40 Posts Drives: 2010 135i M sport Join Date: Mar 2012 Location: Killeen, TX iTrader: (0)	Yea the charge pipe and bov were the first things I checked. I also talked to a few people and they said it might be the o2 sensor? That's what came to mind to me at first but wouldn't the engine light have been on the entire time and not only after 2 days? Also would the sensor cause this type of problem?
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