original injectors vs "updated" injectors

brosidelong · 02-27-2015, 11:36 PM

So I had a misfire develop, replaced the plugs, swapped the coils, and still had the same cylinder continue to do so. Turns out the fuel injector gave up the ghost.

From what I've read, many people have come to the consensus that all six have to be replaced with the new injectors ($1500+

) but I've also seen those who have replaced 1 'bank' of three and had no problems. Several sources indicate this is a viable solution as well, including Tischer. Anyone know the real answer? I don't want to replace three perfectly good injectors that could last for thousands of miles if I don't have to.

Jeef · 02-28-2015, 12:23 AM

Many people have just swapped out one injector and others felt better by doing one bank. So its your call...

brosidelong · 02-28-2015, 12:34 AM

Quote:

Originally Posted by Jeef

Many people have just swapped out one injector and others felt better by doing one bank. So its your call...

Ideally I'd like to just swap the bad one, but I've read all over that the new injectors can't be mixed with old ones, so..

Jeef · 02-28-2015, 12:36 AM

Then do 1 bank

just make sure to get them coded

KeepRidingDirty · 02-28-2015, 07:22 AM

I replaced all 6 because I'm OCD, but 1 at a time is fine, a bank is preferable and all is ideal. Really its up to you.

proTUNING Freaks · 02-28-2015, 07:39 AM

One injector at a time as long as it is coded.

19E92 · 02-28-2015, 08:12 AM

I've read that you don't HAVE to get them coded... apparently after some driving the computer will automatically make adjustments. The only downside of not coding them is that the engine may run a little rough while it is trying to sort out the injectors.

Is this true?

Chocolatethunder · 02-28-2015, 09:20 AM

I had 2 causing misfires, warranty changed all 6

Opo · 02-28-2015, 09:30 AM

Pretty sure if you install any number of injectors WITHOUT coding them the engine will run but not well, I wouldn't drive it like that.

While we're on the subject though.
Does anyone know a good way to check the 'health' of all 6 of your injectors?

My car is @ 113k miles and I have no idea if the injectors have EVER been serviced/replaced.

Levanime · 02-28-2015, 01:10 PM

I've changed only bad one several thousand miles ago..

so far so good

P.S. i've coded it.

02-27-2015, 11:36 PM	#1
brosidelong M3 Haha 11 Rep 43 Posts Drives: 07 E90 335i Join Date: Jan 2015 Location: Salt Lake iTrader: (0) Garage List 2007 BMW 335i E90 [10.00]	original injectors vs "updated" injectors So I had a misfire develop, replaced the plugs, swapped the coils, and still had the same cylinder continue to do so. Turns out the fuel injector gave up the ghost. From what I've read, many people have come to the consensus that all six have to be replaced with the new injectors ($1500+ ) but I've also seen those who have replaced 1 'bank' of three and had no problems. Several sources indicate this is a viable solution as well, including Tischer. Anyone know the real answer? I don't want to replace three perfectly good injectors that could last for thousands of miles if I don't have to.
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02-28-2015, 12:23 AM	#2
Jeef Lieutenant Colonel 388 Rep 1,945 Posts Drives: AW E92 335i Join Date: Nov 2008 Location: San Diego, CA iTrader: (6)	Many people have just swapped out one injector and others felt better by doing one bank. So its your call...
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02-28-2015, 12:36 AM	#4
Jeef Lieutenant Colonel 388 Rep 1,945 Posts Drives: AW E92 335i Join Date: Nov 2008 Location: San Diego, CA iTrader: (6)	Then do 1 bank just make sure to get them coded
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02-28-2015, 07:22 AM	#5
KeepRidingDirty Professional Monkey Trainer 65 Rep 423 Posts Drives: 2007 BMW 335xi Join Date: Aug 2014 Location: Ottawa, On iTrader: (1)	I replaced all 6 because I'm OCD, but 1 at a time is fine, a bank is preferable and all is ideal. Really its up to you.
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02-28-2015, 07:39 AM	#6
proTUNING Freaks 4496 Rep 1,862 Posts Drives: powered by bootmod3 Join Date: Oct 2014 Location: www.protuningfreaks.com \| www.bootmod3.com iTrader: (0)	One injector at a time as long as it is coded. __________________ YouTube Channel [NEW] \| Facebook User Group (20,000+ members) \| Tech Support Website \| Wiki \| FAQ \| iOS App \| Android App \| bootmod3 Web Sales Support Email: sales@protuningfreaks.com \| Tech Support Email: support@protuningfreaks.com
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02-28-2015, 08:12 AM	#7
19E92 Private First Class 35 Rep 174 Posts Drives: '07 335i / '11 535i xDrive Join Date: May 2011 Location: Toronto, Canada iTrader: (2)	I've read that you don't HAVE to get them coded... apparently after some driving the computer will automatically make adjustments. The only downside of not coding them is that the engine may run a little rough while it is trying to sort out the injectors. Is this true? __________________ Monaco Blue E92 // BMS JB4 G5 ISO // BMS Backend Flash // Dual Cone Intake // ER Chargepipe // Dual HKS SSQV BOV Setup // BMW Performance Spoiler // 19" v710 Dolphin Grey // Aero Front Lip // M3 Sideskirts // Mtech Rear Bumper // Quad Tip Diffuser // Quad Exhaust //
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02-28-2015, 09:20 AM	#8
Chocolatethunder Second Lieutenant 34 Rep 260 Posts Drives: E92 335i Join Date: Apr 2014 Location: BROOKLYN iTrader: (7)	I had 2 causing misfires, warranty changed all 6
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02-28-2015, 09:30 AM	#9
Opo Second Lieutenant 30 Rep 209 Posts Drives: 07 335i E92 6MT (12/06 build) Join Date: Apr 2013 Location: Canada iTrader: (0)	Pretty sure if you install any number of injectors WITHOUT coding them the engine will run but not well, I wouldn't drive it like that. While we're on the subject though. Does anyone know a good way to check the 'health' of all 6 of your injectors? My car is @ 113k miles and I have no idea if the injectors have EVER been serviced/replaced.
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02-28-2015, 01:10 PM	#10
Levanime BimECU 193 Rep 759 Posts Drives: BMW Join Date: Dec 2014 Location: SD iTrader: (0) Garage List 2007 BMW 335 [0.00]	I've changed only bad one several thousand miles ago.. so far so good P.S. i've coded it.
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