Fuel Injector identification/Knock Retard help

[Grimster]

I'm trying to verify what injectors are on my car, best I can make out (they're black injectors)
there is a 927 at the top of the injector and 0 280 250 2 in a string around the outside of the bigger rounder part of the injector.

The guy I got it from said 52 or 55# injectors.

It's also got a T-44 turbo and some exhaust work, but it seems no upgraded FPR and I'm not sure about fuel pump. It has an old ANS chip in it, when I get into boost (the factory gauge is near pegged out) and starts showing a LOT of knock retard on my Scanmaster (I also have a powerlogger).

Car runs fine and strong, and unless you really get into the boost (10+ on the factory gauge) I see no knock retard on the scanmaster at all.

All help is much appreciated

 

[Chuck Leeper]

0280 150 2?? U R missing some numbers. If the last 3 are 218, those are stockers.

 

[Grimster]

They're terribly tiny, and hard to make out, so I used a piece of chalk to try and make it easier to read, but I'm pretty sure that there is no more numbers in the second row, I might have some of them WRONG but I'm pretty sure it's 8#'s and then 3#'s on the row up above it on the "neck" or whatever, 927

so maybe 0 280 150 2 927 (would that make any sense?)

I found some online list and those numbers show up as a bosch injector but... not buick:
Stan Weiss' - Electronic Fuel Injector (EFI) Flow Data Table

0-280-150-927 but I'm pretty sure the bottom line is 8 digits not 7.

Edit: I'll take a freakin magnifying glass out there tomorrow maybe that'll help

 

[Chuck Leeper]

"I found some online list and those numbers show up as a bosch injector but... not buick".
Bosch makes injectors, but the auto mfgrs don't, so U won't see a car brand listed.
The 0280... string of numbers is what you use to ID the injs. The other #'s are likely batch identifiers.

 

[Grimster]

You were right! I took a bright flashlight out there and sure enough, there's 2 more digits!

Looks like 218 it is, that last one "might' be a 3 or 9 but I'm pretty sure it's an 8.

Sounds like stockers, hmm supposedly these were upgraded injectors, 55 or 52# maybe someone was mislead?

 

[Chuck Leeper]

Most likely..

You were right! I took a bright flashlight out there and sure enough, there's 2 more digits!

Looks like 218 it is, that last one "might' be a 3 or 9 but I'm pretty sure it's an 8.

Sounds like stockers, hmm supposedly these were upgraded injectors, 55 or 52# maybe someone was mislead?

that's your problem. if the chip is set for 55's and you have 28's.. the fuel volume is WAAAAY short!

 

[Grimster]

The chip is way old (ANS made it, apparently they've been out of business for a while now).

A new chip is a definite.

Assuming a stock fuel supply (pump/fpr) and the TE44 turbo and upgraded exhaust, what injectors should I look at and should I go ahead and upgrade the FPR to an adjustable one and the fuel pump to a bigger one at the same time?

I'm shooting for a high 11 second outcome if possible.

And thanks for your help

 

[ES1]

I would go with 60s.
Walbro 340 fuel pump with hotwire.
An adjustable FPR
A Turbotweak chip.

 

[cabech984]

Also, is your ecm modified for low impedance injectors like #55's? If so, you'll want to change that if you go to high impedance. Just a thought!!

 

[Grimster]

Well it seems I'm running stock injectors now so I'm guessing it's not modified at all. (edit)Turbotweak has the 60's that work with existing ecm, figure I'll get that + chip and then I'll verify my fuel pump is or is not stock (or at least not up to the job) and then replace that if necessary.

 

[Chuck Leeper]

Nope..

Also, is your ecm modified for low impedance injectors like #55's? If so, you'll want to change that if you go to high impedance. Just a thought!!

A lo imp ecm will handle the hi imp injs just fine... They create less load on the drivers.:wink:

 

[cabech984]

A lo imp ecm will handle the hi imp injs just fine... They create less load on the drivers.:wink:

Did not know that. You learn something new everyday. I'll be fine then when I upgrade from my #55's!!

 

[Grimster]

Just placed an order for 60# injectors and a custom chip from turbotweak hopefully I'll find my FP is already hot wired/upgraded.