Possible New Fuel Injectors

[Neveragain55]

Hi Gang,

As of now all of my undercarriage work is done and I'm super excited as to how everything worked out. 90% of everything under my car is brand new or rebuilt and even though it was long overdue, I have to say that almost everything I replaced actually wasn't in that bad of shape.

Even all of the fluids that I changed like the tranny & differential fluid looked & smelled like new.

I've owned the car for twelve years and I have no idea if any of the previous owners ever changed any of the fluids so it's a true testament to how well BMW made these cars and their reliability.

Having said all of that, I'll be shifting my focus to the engine in the spring when she comes back from paint jail.......

She's got roughly 286.000 miles on the clock and all of my miles are highway miles. She still runs like a sewing machine and has never let me down.

I had originally planned on sending the original fuel injectors to "Witch Hunter Performance" http://www.witchhunter.com/ to let them rebuild my injectors.......but then I accidently found these injectors on eBay.

http://www.ebay.com/itm/281281614154?_t ... EBIDX%3AIT

Could really use some solid opinions here from all you engine rebuild guys....

[jps635]

Apparently there are high and low impedence injectors which you should check out if not already aware. Search for Brucey's posts on this.

Oblivious to this at the time i purchased a set of these 19lb "Mustang" injectors http://www.fiveomotorsport.com/bosch-ye ... l-injector which have been fine.

Like those you are eyeing they have 4 smaller nozzles providing better atomisation. Honestly these noticeably improved the response of the engine.

I then got my AFM re-calibrated to compensate for the slightly richer mixture.

Five-O were good to deal with.

[dwcains]

Just happened to see these on myE28 (no personal interest, though):

http://www.mye28.com/viewtopic.php?f=4&t=135583

I've already got a set in my car, and have been very pleased with them.

[Neveragain55]

So..........

Even though the eBay seller doesn't list these injectors as Mustang 19 lbs fuel injectors, are both of you guys telling me that - that's what they are?

It's cool if they are as long as they work in my car. The only thing I think I'm confused about is recalibrating the MAF to even out the mixture. (meaning I wouldn't know how to do that)

The only other enhancement I'm thinking about doing is this:

http://www.iemotorsport.com/bmw/E28-E24 ... 30maf.html

So lets try this:

Would the fuel injectors that I posted in the original post along with this MAF from Ireland Engineering work with each other, and if not what type of adjustments would I have to make to make everybody work & play well with each other.

Mind you I'm already aware of the 28 ECU pin performance chip that I would need for the new MAF.

Thanks guys.......

[jps635]

No I'm not saying the ebay listing you posted are the Mustang injectors, only that was what i used and worked great. As said check the info from Brucey about impedence, it may vary with year and ECU ???? - can't recollect.

Getting the MAF adjusted was just taking the car to a local independent BMW service agent who adjusted the MF using an exhaust gas analyser.

I've did a lot of reading re the Miller AFM some time ago, but no experience. There are some on here an on the e28 forum who are using this. I'm going stand-alone.

[Neveragain55]

Thanks, I understand now.

I did several searches last night trying to find Brucey's thread on this topic but as you well know, the search function on this site is sort of funky.

No matter what you type in the search bar it just basically brings you to a slew of different threads on lots of different topics but not to the exact words or topic you typed in.

It doesn't locate the key words you type in by highlighting them in yellow the way several other car forums do.

I belong to quite a few car forums and most of their "search" functions direct you right to what your searching for by locating the words you typed & highlighting them but this one doesn't...............or I'm doing it wrong.

Either way I'll keep looking more into this before I pull the trigger on anything because while I don't mind a slight increase in performance, I definitely don't want to do anything that will ruin the gem of an engine I have now.

Thanks for the info......

[jps635]

Here you go. Type in "low and impedence and injectors", in the top search bar, select "search for all terms" and filter on engine/ electrical.

viewtopic.php?t=17427&highlight=low+impedence+injectors

viewtopic.php?t=17267&highlight=low+impedence+injectors

viewtopic.php?t=4271&highlight=low+impedence+injectors

There are more results

[brickwhite]

had a couple sets done by MEPH

http://www.r3vlimited.com/board/showthread.php?t=266477

pretty quick turn around and you cannot beat the price

[Neveragain55]

Thanks for all of the replies guys.

I'm just about certain that the injectors I'm looking at are high impedance injectors and being that my 6 is an 89.....I'm just about more than positive that my ECU is of the high impedance variant.

I'm actually sitting on a plane headed for Mexico at the moment for business but the second I get home, I'll check the ECU to be sure.

I think I'm still going to have the original injectors cleaned, re-flowed, and matched just to have as a back up set in case whatever I put in there doesn't work.

Thanks everybody...

[wjtesquire]

You are correct that your injectors are high impedance. I think the switch over happened some time in 1985. My car is a January 85 build and it uses low impedance. Good idea to rebuild the current set and keep as a backup.

[Neveragain55]

Thanks, that's good to know.....

I'll keep everybody posted when it all happens as a follow up.

Right now I need to crash after multiple connections and several flights.

Thanks for the reply.....