Chip for Bosch 50lb same as MSD?

[sf600]

I have a set of Bosch 50lb injectors and three chips that are supposed to be for MSD injectors. Does the Bosch require a different program or are 50 pounders all the same. I greatly appreciate any info that can be sent my way.

Thanks

 

[Black Car]

Yes

 

[JayC]

I didnt know Bosch made a 50# injector. Are you sure they aren't low z 52s?

 

[sf600]

Yes? They are the same or yes I need a new chip.
Jay, here is a pic of the injector. They came out of a friends buick and he said they were 50's.
Thanks guys.
http://www.tjch.com/images/injector.jpg

 

[JayC]

Im pretty sure that's a low ohm 52# injector, judging by the picture. I have several guys running those injectors and yes, you will need a new chip. You will also need a modified ECM if they are low ohm injectors.

 

[sf600]

Thanks Jay. I guess I'll be contacting you abuot a chip.

 

[JayC]

You should get a meter and check the ohm rating across the coil just to be sure.

The 52s are really good injectors, though. I wouldnt be upset about getting a set of those.

 

[sf600]

Jay, what ohm reading should I be looking for?

 

[JayC]

Well.. a high z injector is 12 or above usually. Anything below that, I consider to be low impedence. Those are probably around 2.4 or so.

 

[sf600]

They all measure 2.6
Can you recomend where I can have the ecm driver mod done?
Thank you.

 

[Sleeper]

Bob Bailey and Red Armstrong both do the driver mods.
This should give you all the info you need.

http://www.turbobuick.com/forums/showthread.php?s=&threadid=35469&highlight=ecm+mod


Paul

 

[sf600]

Sleeper, that is a helpfull thread thanks.
Are there any drawbacks common to running low Z injectors like idle quality, tip in stumble or other driveability issues?
Sorry for the squirrely questions, TIA.

 

[Sleeper]

No problems at all. In fact they are a bit easier to tune down low, because of the faster response times of the peak and hold drivers vs the saturated circuit drivers. 1.5ms vs 2ms. If your injector duty cycle is around 2 milliseconds or below at idle, you can see where they will shine.
I run Siemens low imp. 52's and the car idles extremely well.
Remember the key is the chip... A good chip programmer like Bob or Jay will make the injectors perform the way they should right across the board.

Paul

 

[sf600]

Sounds like a winner, thanks a bunch Paul.