Injector(s) dying? Whos got the cheapest legit 12's

[colo_evo]

Completely stock 07 335i only running a flash. 30k /4 years on index 10 injectors. Issue duplicated on a stage 1 cal and factory cal.

Every cold start the car fires up instantly, but then stumbles and misfires for 3-6 seconds before finally catching itself and cleaning up. Hot starts are better but still does it 10% of the time. There is no long crank so I'm thinking the hpfp is fine. Right now I'm leaning towards the injectors being the culprit.

It won't throw codes, and it won't full on stall, so I'm not sure what bank is having the issue. Logs show ltft and stft are consistent bank to bank. If I decel in gear both o2 sensors max out lean when in dfco. This issue came about after the vehicle sat at the dealership for 2 months waiting on the hvac blower motor replacement.

Before dropping $600+ on new injectors I'd like to confirm they're the culprit. If they are in fact the issue, who's got the best prices on real index 12's?

Thoughts, experiences and suggestions welcome.

Screenshot and log of a relatively good start attached. Sometimes rpms fall to 400 on worse starts. You can see as soon as it goes closed loop fueling the rpm cleans up.

 

[Torgus]

I bought mine from FCP for the lifetime warranty. At the time they were priced well but it has gone up significantly.

 

[colo_evo]

I bought mine from FCP for the lifetime warranty. At the time they were priced well but it has gone up significantly.

Wow! Prices jumped significantly... now I really want to be sure it's the injectors before replacing them.

 

[dyezak]

Yea, I wish I bought a set back when they were $600. Now you are looking at $1500 minimum.

 

[Torgus]

Yea, I wish I bought a set back when they were $600. Now you are looking at $1500 minimum.

Yeah I think I paid like $800. $600 with a lifetime warranty is a dream. Well assuming they are stopping at Index 12 of course. I don't know if FCP would upgrade you to the latest model...

 

[langsbr]

Someone on e90 let the cat outa the bag about intermotor injectors from Advance. I have yet to see if they commented that they were good. They claim they are new, but... I did find inline where intermotor says they are index 11 "or higher" so it may not be index 12s, but might be worth saving 1100 bucks. They are 137 each, but you can usually find a 20 or 25% off coupon for Advance.

 

[colo_evo]

Someone on e90 let the cat outa the bag about intermotor injectors from Advance. I have yet to see if they commented that they were good. They claim they are new, but... I did find inline where intermotor says they are index 11 "or higher" so it may not be index 12s, but might be worth saving 1100 bucks. They are 137 each, but you can usually find a 20 or 25% off coupon for Advance.

Ordered 3 from advance with 25% off. If they come in and appear okay and index 12 I'll order another 3.

Now, is everybody in agreement my injectors are tired? Any comments on the log or start screenshot?

 

[langsbr]

Did you order them 3 at a time or individually? You only get a max of $50 off I think, so you can save more by doing them individually.

 

[colo_evo]

Did you order them 3 at a time or individually? You only get a max of $50 off I think, so you can save more by doing them individually.

All 3 in one order.

I order a lot from advance, so I know where to find decent deals.

I'll just return them if we decide injectors aren't the issue.

 

[langsbr]

You are Advance auto Ninja with that code. Nice. Definitely let us know if the injectors pan out.

 

[colo_evo]

Hopefully they're not junk like a lot of the AA parts are.

I haven't seen any glaring negative reviews, so hopefully they're okay. I'll at least look at the package for these before dropping 1/5 the value of the entire car on the fcp injectors.

 

[langsbr]

I called intermotor a while back because they are listed as new and not refurb and I wanted to confirm. They also apparently come with seals and caps.

 

[colinod]

i got the 500 dollar index 12s from ebay. they work amazingly. and if any come DOA, then you have a one year warranty

 

[colo_evo]

i got the 500 dollar index 12s from ebay. they work amazingly. and if any come DOA, then you have a one year warranty

What were your your symptoms?

 

[langsbr]

i got the 500 dollar index 12s from ebay. they work amazingly. and if any come DOA, then you have a one year warranty

Is their warranty only for DOA and not leaking?

 

[Rob09msport]

I bought the buyauto parts for 784 I originally was going to purchase from rock auto but i posted about the price and went to order and they were out of stock again plus the buyauto parts are 100 percent index 12 and updated for the s63 I also verified with vdo that they were genuine new in box.

 

[Rob09msport]

Hopefully they're not junk like a lot of the AA parts are.

I haven't seen any glaring negative reviews, so hopefully they're okay. I'll at least look at the package for these before dropping 1/5 the value of the entire car on the fcp injectors.

I had horrible luck with aa coils had 1 a month fail , out of six only 3 lasted 4 months until i purchased bl coils i will never buy again

 

[colo_evo]

Three showed up. They appear to be the continental vdo reman injectors. All have part number a2c9521190280 and the BMW part number scratched out.

 

[langsbr]

Three showed up. They appear to be the continental vdo reman injectors. All have part number a2c9521190280 and the BMW part number scratched out.

I didn't think there were any re-man injectors. Was the index scratched out too?

 

[colo_evo]