XtremeDime

iTrader: (16)

Im upgrading to 55# Siemens injectors, what info will my tuner need? I was told he may need voltage. Thanks!

XtremeDime

iTrader: (16)

Bumpity

XtremeDime

iTrader: (16)

bump.

kenp

iTrader: (9)

If you haven't already bought them, consider having FIC redo your stockers to flow the GPH you need. I did that & didn't have to adjust anything but IFR.

Tzion_ben_Arthur

iTrader: (19)

I would like to hear an answer to the post as well. Information on these is harder to find then where my grandmother hides her stash.

kenp

iTrader: (9)

Don't hold yer breath.

Dan Stewart

Voltage requirement doesn't change (unless you are using injectors for the new 48v setup that BMW has on certain engines).

You just have to check and make sure that the coil impedance is the same. Stock LSes use high impedance injectors.

If you are using a low impedance injector, well, you'll fry the injector drivers in the pcm at startup.

As long as you bought injectors with the correct impedance, your tuner only needs to know the IFR (injector flow rate).

ak95ta

iTrader: (3)

If your ok with a raped VE table, then that method works just fine. If you want a proper tune with no finicky areas, each injector has it's own voltage offset data, and that info is hard to come by. I am still looking for the voltage offset, short pulse adder, and min pulse width for my 95# Delphi injectors.

Dan Stewart

So basically, you think we should only be tuning utilizing information we don't have.......

and since you are so against "raped" ve tables, and already admitted you don't even have that information, exactly how are you running those 95# injectors?

......with a "raped" ve table, maybe?

ak95ta

iTrader: (3)

Unfortunately I am running with a raped VE table, and therefore I have some odd spots/drivability issues. Rich spots down low I can't tune out, and some surging I can't get rid of either. I have been looking for the correct voltage offsets and such for about 6 months.

I posted on behalf of the OP, who asked for the voltage information for the injector he purchased. The voltage info may be available in Greg Banish's new DVD, that summit sells for $250. If it had the correct information for my injectors, I would have bought it already. I don't know if the DVD contains the proper information for the OP's 55# injectors.

davidws6

iTrader: (36)

I'm still trying to find the correct data for the 60lb'ers. I used info off someones DVD and I still have a rich decel. Not unless I'm doing something wrong, which might be possible, LOL.

Did you receive any information with the Inj.? I E turn on time, Turn off time etc. ?

69LT1Bird

iTrader: (1)

Greg's DVD had these Siemens

He calls the SD 60#Shorty

Siemens-Continental 61# Injectors
Part #FI114962 61#/hr @ 3 bar
Minitimer Connector Deka IV
Single 26 deg Cone

Cross reference this to see if you can use the same data. If you can, you know the drill. Buy the DVD.

SSpdDmon

iTrader: (10)

You need to lower the minimums for the injector pulse width to ~0.8 or so to allow the PCM to make an IPW calc that low. The battery voltage adder & short pulse adder will be added to the final pulse width. What you need to do is try to achieve an IPW of 1.6~1.7. This will get you out of the rich decels. That and, make use of DFCO.

davidws6

iTrader: (36)

I had the Min pulse to .805 and default @ .805 and was using DFCO but after exiting DFCO afr will go 11.8 ?

BTW, I called the place where I bought them as they do tuning also. He said that I needed to raise my min pulse to 1.2 or 1.3. Been there done that and still rich after exiting DFCO. I tried 1.4 but then @ 1500 it ran like it was hitting a rev limiter, but don't know if that is because I've been trying to compensate by leaning out the VE table in those area's for the SD tune. Maybe I need to try 1.4 again edit the VE table to see what happens??

Part and WOT runs great.

BTW I would think that 60lb short info would be very close to the 60lb long ?

69LT1Bird

iTrader: (1)

The DVD has one they call SD 60# Tall also but the description didn't mention Siemens, just FRPP M-9593-LU60

SSpdDmon

iTrader: (10)

Well, you need to log commanded IPW when it's rich. From there, you can back out the adders based on the current conditions reported by the other sensors (MAP, battery voltage, etc) and figure out what the VE/MAF calculated pulse width was. Then, adjust down the voltage and/or short pulse to bring the total commanded pulse width down. Just remember to make sure you're working in the right units (i.e. manvac vs map).

CancerJCC

iTrader: (4)

ooooppps (was supposed to be a PM)