X pipe questions

ching · 09-27-2009, 10:49 PM

Guys, I'm thinking of adding a X-pipe, but I don't want to get a tune. Call me paranoid, but I'm just want to be messing with ECU. Been there, done that, just not interested in doing this to this car.

Now, I know that many of you guys get a tune after getting the X-pipe, so the first question is how many ponies am I leaving on the table because of this?

Second question is, which X-pipe will not throw a CEL? I know many manufacturers state that their products do not throw a CEL, but after reading a few threads it appears that many do. What's not clear to me is if the install was incorrect (damaged O2 sensor), or there are design deficiencies (thinking the encore/fabspeed thread here) which need to be recitified.

AMPowerJ · 09-27-2009, 10:53 PM

No X-Pipe will throw a code. The secondary cats do not have O2 sensors so no worries. Now if you want to replace the front cats to my knowledge the only high-flow cats that will not throw a code are the Fabspeed units. All other high-flow cats or straight pipes would require a tune to remove the check engine light.

MrHarris · 09-27-2009, 11:24 PM

Replacing the primary cats are where most of the gains are.

Nawaaz · 09-28-2009, 08:24 AM

Quote:

Originally Posted by AMPowerJ

No X-Pipe will throw a code. The secondary cats do not have O2 sensors so no worries. Now if you want to replace the front cats to my knowledge the only high-flow cats that will not throw a code are the Fabspeed units. All other high-flow cats or straight pipes would require a tune to remove the check engine light.

+1

The Fabspeed x-pipe w/hfc's is the only one I've heard that doesn't throw a check-engine light.

Also, if you go without a tune, I'm guessing you're probably leaving 10-20 hp on the table, maybe? A tune not only helps gain power, but it also helps tie in all your mods with the car, so your car can perform even better.

Robo Squirrel · 09-28-2009, 08:37 AM

Fabspeed FTW!!!!!!!

Nawaaz · 09-28-2009, 08:55 AM

^ +1

And I also believe Robo Squirrel has some vids of his Encore & Fabspeed set-up, since I believe he and you (OP) have the same rear exhaust.

If you (OP) would like to listen/see those vids, I'd PM him so that he may be able to send you a link to them.

Good luck!

Robo Squirrel · 09-28-2009, 09:47 AM

heres a link to teh thread

http://www.m3post.com/forums/showthread.php?t=301930

ching · 09-28-2009, 07:55 PM

Thanks for the responses guys. Yes, I have the same exhaust as Robo so the vids were very helpful.

Robo Squirrel · 09-29-2009, 07:40 AM

Quote:

Originally Posted by rfoss

Encore Innovation x-pipe + HFC did not throw a CEL for me...power and sound gains are awesome as well. Can't go wrong with Fabspeed or Encore from what I've read

i had ALOT of trouble with the fitment of the encore system...leaked like a siv

max08e90 · 09-29-2009, 04:46 PM

Is anyone a bit scared to replace the cats because the e46's had some problems with them, and I may be wrong, but I believe the dealer has to replace them up to 8 years.

turb934 · 09-29-2009, 08:28 PM

AA x-pipes & AA HFC with Eisenmann race did not throw a CEL and car has been tracked.

Ben335 · 09-29-2009, 10:00 PM

Quote:

Originally Posted by turb934

AA x-pipes & AA HFC with Eisenmann race did not throw a CEL and car has been tracked.

I think you are the exception. A lot of owners of the AA Xpipe and HFC are getting errors, unless it is tuned out. AA has admitted itself that it will throw a CEL unless you tune it out.

09-27-2009, 10:49 PM	#1
ching First Lieutenant 11 Rep 315 Posts Drives: e90 m3 Join Date: Jun 2009 Location: toronto iTrader: (0)	X pipe questions Guys, I'm thinking of adding a X-pipe, but I don't want to get a tune. Call me paranoid, but I'm just want to be messing with ECU. Been there, done that, just not interested in doing this to this car. Now, I know that many of you guys get a tune after getting the X-pipe, so the first question is how many ponies am I leaving on the table because of this? Second question is, which X-pipe will not throw a CEL? I know many manufacturers state that their products do not throw a CEL, but after reading a few threads it appears that many do. What's not clear to me is if the install was incorrect (damaged O2 sensor), or there are design deficiencies (thinking the encore/fabspeed thread here) which need to be recitified. __________________ E90 BMW M3 interlagos blue / silver novillo - vrs type ii diffuser, ape performance air filter, ind ib reflectors, RAC RG63 gunmetal, 2 car seats and a baby on board sign
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09-27-2009, 10:53 PM	#2
AMPowerJ One mod leads to another ... 416 Rep 2,900 Posts Drives: 2014 F10 M5 Join Date: Apr 2008 Location: Blythewood, SC iTrader: (10)	No X-Pipe will throw a code. The secondary cats do not have O2 sensors so no worries. Now if you want to replace the front cats to my knowledge the only high-flow cats that will not throw a code are the Fabspeed units. All other high-flow cats or straight pipes would require a tune to remove the check engine light. __________________ Current: 2014 F10 M5 Previous: 2015 F80 M3, 2013 E92 M3, 2013 F10 M5, 2009 E90 M3, 1998 E36 M3
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09-27-2009, 11:24 PM	#3
MrHarris yodog 197 Rep 5,025 Posts Drives: '86 Corolla Join Date: Jun 2007 Location: Diamond Bar, Ca iTrader: (5) Garage List 2009 BMW [10.00]	Replacing the primary cats are where most of the gains are. __________________ 2009 E92 M3 \| Alpine White \| Black Extended \| Advan RS \| Turner Test Pipes \| Dinan Axle-Back \| OETuning \| Eibach Springs \| UUC SSK \| VRS Front Lip \| VRS Type I Diffuser \| Matte Black \| RPi Scoops \| MS Filter \| Yokohama AD08 \| F1 Pinnacle Special Thanks: Gintani \| OETuning \| eAs
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09-28-2009, 08:37 AM	#5
Robo Squirrel Major 70 Rep 1,008 Posts Drives: 991.2 GT3 Join Date: Mar 2009 Location: MI iTrader: (1)	Fabspeed FTW!!!!!!! __________________
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09-28-2009, 08:55 AM	#6
Nawaaz Brigadier General 221 Rep 4,643 Posts Drives: . Join Date: Apr 2009 Location: . iTrader: (0)	^ +1 And I also believe Robo Squirrel has some vids of his Encore & Fabspeed set-up, since I believe he and you (OP) have the same rear exhaust. If you (OP) would like to listen/see those vids, I'd PM him so that he may be able to send you a link to them. Good luck!
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09-28-2009, 09:47 AM	#7
Robo Squirrel Major 70 Rep 1,008 Posts Drives: 991.2 GT3 Join Date: Mar 2009 Location: MI iTrader: (1)	heres a link to teh thread http://www.m3post.com/forums/showthread.php?t=301930 __________________
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09-28-2009, 07:55 PM	#8
ching First Lieutenant 11 Rep 315 Posts Drives: e90 m3 Join Date: Jun 2009 Location: toronto iTrader: (0)	Thanks for the responses guys. Yes, I have the same exhaust as Robo so the vids were very helpful. __________________ E90 BMW M3 interlagos blue / silver novillo - vrs type ii diffuser, ape performance air filter, ind ib reflectors, RAC RG63 gunmetal, 2 car seats and a baby on board sign
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09-29-2009, 04:46 PM	#10
max08e90 Second Lieutenant 25 Rep 211 Posts Drives: E92 Join Date: Apr 2009 Location: LA iTrader: (2)	Is anyone a bit scared to replace the cats because the e46's had some problems with them, and I may be wrong, but I believe the dealer has to replace them up to 8 years.
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09-29-2009, 08:28 PM	#11
turb934 First Lieutenant 23 Rep 325 Posts Drives: E92 M3 Join Date: Aug 2007 Location: Oshawa, Ontario, Canada iTrader: (0)	AA x-pipes & AA HFC with Eisenmann race did not throw a CEL and car has been tracked. __________________ 08 E92 Interlagos blue, AFE filter, AA X-Pipe & HFC, AA pulley, AA software V1.5, Eisenmann race, M Performance Steering Wheel II, Pagid RS19's, Stoptech SS brake hoses, RAC RG63 Silver, Motul 600, E93 front & rear stablizer bars, M3 Competition Package Carbon Fiber Rear Lip Spoiler, Vorsteiner GTS3 carbon fiber front bumper & vented hood.
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