Bringing LowZ injectors up to HiZ

Ok, so Im in the mist of MS and I realized I need to put in resistor packs for the low impedence injectors I bought from a fellow tbrickster. So, bad thing is I already did up my entire wire harness (came out nice too ) and now I realize I've got to back up.

So, first of, does anyone know what resistor to use? Second, could I use just one before the 12v side splits into the 4 or is that going to be to much current through a single resistor?

Its' not a big deal to get to the harness for each one... just need to know what I need to do to it.

I don't know the complete specs on the injectors, other than they are Lucas LowZ 53 lb/hr injectors. If you guys could help me out that'd be great!

Doug

Hi Dougie.
I have done exactly this on my car. I spliced resistors into the stock NA harness to run my LoZ ford injectors.

What you need is one 5ohm, 10-20 watt resistor in line with each injector

You don't want to use one before everything splits, as things like this tend to heat up and you'll be requiring that resistor to dissipate 4x as much power.

My 4 resistors seem to work good- no fires yet and it was very cheap.

Great Kenny, been waiting for your ass to come one line, I knew you'd know.

Sweet.. I'll go get me some from da shack

Ya, I figured thats alot of current to run through one resistor.

Thanks,

Doug

Why don't you just use a resistor pack from a B230FT car? Heck they are pocket parts at pick in pull :wink: .

Yea said:

Why don't you just use a resistor pack from a B230FT car? Heck they are pocket parts at pick in pull :wink: .

Click to expand...

I may just go get them... though a trip to radio shack is alot easier at the moment... course 4 resistors is about 2 bucks, price to get into pick and pull is about 2 bucks... hmmmm

damn.. I have NEVER had to pay to get in a pick and pull...

And if you live in the frozen north like me, the thought of finding a b230ft car in a junkyard is pure fantasy...

lol, looks like Im headed out there. Radio Shack only has 1 or 10 ohm resistors. Shit, this really puts me behind

Doug

doug,
i used the 10ohm version [from RatShack] with my ford turbo coupe injectors. i have had my car up to 10psi w/o any problems so far [with these]. i have checked them pretty damn often to see if they are getting hot and they have been pretty cold each time.
-jesse

lol, I just tied to 10ohm ones in parrallel to drop them to 5ohm. They are freaking HUGE, I don't see how they could possibly have a problem.

Doug