Injector replacement

Gizm0 · 10-14-2015, 02:07 PM

Hey Guys,

I replaced an injector I didn't need to. The old one still works fine so I want to know if I can simply swap it back, will the seal still be in good shape or do I have to replace it before sticking the injector back in? As soon as I removed the injector from the engine, I put the cap on the tip so the seal wouldn't swell.

Also, if I'm going to do this, do I need to get a new decoupling element or can I put the injector back in place with the original one?

Reason I'm asking these questions is because I cannot figure out how to get INPA to work and can't code the new injector in. It would be easier for me to simply put the old injector back in rather than spend hours trying to figure out how to get INPA to work...

Thanks!

Dann · 10-14-2015, 02:47 PM

Personally for how cheap the decouping element and seal is I would change them for new ones.

Gizm0 · 10-14-2015, 02:52 PM

Quote:

Originally Posted by Dann

Personally for how cheap the decouping element and seal is I would change them for new ones.

They are cheap, but the seal requires a special tool to install... As far as the decoupling element, I don't see how this could be a part that wears out. It's essentially just a washer that absorbs vibrations between the block and the injector..

theweebabySeamus · 10-14-2015, 11:24 PM

If you put the cap on the injector immediately I would just re-use the same injector. Or pay an Indy to code it, mine was $50.

stashtrey · 10-15-2015, 12:06 AM

I have a bunch of injectors i pulled a couple months ago and the seals are still flush.

I bought new decoupling rings but wondered myself why they cannot be reused. Better safe than sorry for the cost of a single ring, IMO.

Is your INPA simply not working or are you having trouble figuring out how to code? Assuming you have software trouble as the coding process is ultra easy.

Happy to help of I can!

Gizm0 · 10-15-2015, 07:45 AM

Quote:

Originally Posted by stashtrey

I have a bunch of injectors i pulled a couple months ago and the seals are still flush.

I bought new decoupling rings but wondered myself why they cannot be reused. Better safe than sorry for the cost of a single ring, IMO.

Is your INPA simply not working or are you having trouble figuring out how to code? Assuming you have software trouble as the coding process is ultra easy.

Happy to help of I can!

I just put the old injector back in with the new decoupling element I had bought with the new injector. The decoupling element was only used for a week so I can't see it being worn out already...

INPA is working, but when I press "shift+F4" to get to the injector coding screen, I get an error message ApiResultText: Error #95 SYS-0005: OBJECT FILE NOT FOUND. It seems like my laptop isn't able to communicate with the ECU for some reason.

JDuke335i · 10-15-2015, 09:08 AM

Quote:

Originally Posted by Gizm0

Quote:

Originally Posted by stashtrey

I have a bunch of injectors i pulled a couple months ago and the seals are still flush.

I bought new decoupling rings but wondered myself why they cannot be reused. Better safe than sorry for the cost of a single ring, IMO.

Is your INPA simply not working or are you having trouble figuring out how to code? Assuming you have software trouble as the coding process is ultra easy.

Happy to help of I can!

I just put the old injector back in with the new decoupling element I had bought with the new injector. The decoupling element was only used for a week so I can't see it being worn out already...

INPA is working, but when I press "shift+F4" to get to the injector coding screen, I get an error message ApiResultText: Error #95 SYS-0005: OBJECT FILE NOT FOUND. It seems like my laptop isn't able to communicate with the ECU for some reason.

Have you ever used the dcan cable b4 on anything else ? Reason I ask is to make sure the cable isn't the problem

Stroker1 · 10-15-2015, 10:49 AM

Do you have a jb4 or back end flash installed? If jb4 is it on map 0 prior to connecting?

Gizm0 · 10-15-2015, 12:12 PM

Quote:

Originally Posted by JDuke335i

Have you ever used the dcan cable b4 on anything else ? Reason I ask is to make sure the cable isn't the problem

I have used the cable for JB4 backend flash with the Android MHD app (I switch regularly between E85 map and pump gas map)

Quote:

Originally Posted by Stroker1

Do you have a jb4 or back end flash installed? If jb4 is it on map 0 prior to connecting?

I have JB4 + Backend flash. The ECU is currently flashed for E85 and JB4 was on map 0 when trying to get INPA to communicate with the car.

BeastMode335i · 10-15-2015, 01:27 PM

you have the most up to date INPA files..?? That was my issue when I had your same error message..

Gizm0 · 10-15-2015, 02:01 PM

Quote:

Originally Posted by BeastMode335i

you have the most up to date INPA files..?? That was my issue when I had your same error message..

I have version 6.4.3

BeastMode335i · 10-15-2015, 02:12 PM

Quote:

Originally Posted by Gizm0

I have version 6.4.3

PM'd

Stroker1 · 10-15-2015, 02:52 PM

Have stock .bin saved?

KeepRidingDirty · 10-15-2015, 02:57 PM

I swapped mine in and out a couple times with no issues. BMW recommends a lot of unnecessary things to replace constantly. Unless you have compression escaping past the teflon seal you have no issue.

10-14-2015, 02:07 PM	#1
Gizm0 Colonel 426 Rep 2,136 Posts Drives: 08 e92 335i 6mt Join Date: Jan 2013 Location: Virginia iTrader: (1)	Injector replacement Hey Guys, I replaced an injector I didn't need to. The old one still works fine so I want to know if I can simply swap it back, will the seal still be in good shape or do I have to replace it before sticking the injector back in? As soon as I removed the injector from the engine, I put the cap on the tip so the seal wouldn't swell. Also, if I'm going to do this, do I need to get a new decoupling element or can I put the injector back in place with the original one? Reason I'm asking these questions is because I cannot figure out how to get INPA to work and can't code the new injector in. It would be easier for me to simply put the old injector back in rather than spend hours trying to figure out how to get INPA to work... Thanks! __________________ JB4 G5 w/ Backend flash - Walbro 450lpfp - VRSF DPs - VRSF 5" stepped IC - DCI - ER CP w/ Tial BOV - 335is clutch
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10-14-2015, 02:47 PM	#2
Dann Major 133 Rep 1,381 Posts Drives: E90 LCi 335i Join Date: Feb 2015 Location: Portsmouth, United Kingdom iTrader: (0)	Personally for how cheap the decouping element and seal is I would change them for new ones.
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10-14-2015, 11:24 PM	#4
theweebabySeamus Captain 376 Rep 902 Posts Drives: M3 Join Date: Jul 2014 Location: Bay Area iTrader: (1)	If you put the cap on the injector immediately I would just re-use the same injector. Or pay an Indy to code it, mine was $50.
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10-15-2015, 12:06 AM	#5
stashtrey Lieutenant Colonel 294 Rep 1,834 Posts Drives: 08 E90 335xi TiAg Join Date: Dec 2012 Location: Sacramento, CA iTrader: (8) Garage List 2008 E90 335xi Sedan [0.00]	I have a bunch of injectors i pulled a couple months ago and the seals are still flush. I bought new decoupling rings but wondered myself why they cannot be reused. Better safe than sorry for the cost of a single ring, IMO. Is your INPA simply not working or are you having trouble figuring out how to code? Assuming you have software trouble as the coding process is ultra easy. Happy to help of I can!
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10-15-2015, 10:49 AM	#8
Stroker1 Private 35 Rep 91 Posts Drives: 07 335 cp dci, ***dp's, jb4 Join Date: Sep 2015 Location: atlanta ga iTrader: (0)	Do you have a jb4 or back end flash installed? If jb4 is it on map 0 prior to connecting?
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10-15-2015, 01:27 PM	#10
BeastMode335i Maximus Decimus Meridius 1130 Rep 4,584 Posts Drives: F30 335i Join Date: Apr 2014 Location: Down South iTrader: (2)	you have the most up to date INPA files..?? That was my issue when I had your same error message.. __________________ F30 335i Melbourne Red Metallic M-Sport Package
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10-15-2015, 02:52 PM	#13
Stroker1 Private 35 Rep 91 Posts Drives: 07 335 cp dci, ***dp's, jb4 Join Date: Sep 2015 Location: atlanta ga iTrader: (0)	Have stock .bin saved?
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10-15-2015, 02:57 PM	#14
KeepRidingDirty Professional Monkey Trainer 65 Rep 423 Posts Drives: 2007 BMW 335xi Join Date: Aug 2014 Location: Ottawa, On iTrader: (1)	I swapped mine in and out a couple times with no issues. BMW recommends a lot of unnecessary things to replace constantly. Unless you have compression escaping past the teflon seal you have no issue. __________________ JB4 G5 ISO / ER Charge Pipe and Tial BOV / Wagner FMIC / CYBA Tips & Air Scoops / AFE DCI / BMW PE Exhaust Mod / M3 Rep Bumper / Dynavin E9x
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