Quick Poll on injectors, 135 bar or 155 bar

[zukgod1]

I'm about to buy some injectors and I'm trying to decide on the 135 bar vs the 155 bar.

I remember reading a thread where higher fuel economy was achieved with the lower breaking pressures. I'm shooting for more mpg but I'll sacrifice a bit for performance if the higher 155 bar would be better for that.

Just want a couple people to chime in before I buy.

10mm pump BTW.

[zukgod1]

I found the thread,
http://vwdiesel.net/phpBB/viewtopic.php?t=12774&highlight=injector

I still need a couple of you to give me a opinion.

[zukgod1]

And I find a post from the Pump god making the decision for me.

"Hey guys

If u run a turbo u need to run the 155 Bar injectors. and 130 for the NA

the reason for the higher pressure was to make sure you don't get
secondary injection caused by the turbo cylinder pressures lifting
nozzle needle off its seat and causing a seconday injection.

hope this clears up

Giles"

[saurkraut]

If 155bar is for stock boost.

What should it be for 25 PSI boost?

[zukgod1]

If 155bar is for stock boost.

What should it be for 25 PSI boost?

I dont know but I'm not going higher than 155 with mine.

It rarely runs and those boost levels so no need to have the injectors set that high.
I get 30-35 psi bursts but most of the time I'm @ 10 or so.
75 mph is 775 deg and 8psi.

[saurkraut]

But theoretically, every time we go X? bar over stock boost, we're getting secondary injection.

And this causes poor fuel milage, and maybe higher EGT every time we go over X? bar boost with the 155 bar break pressure injectors.

[zukgod1]

But theoretically, every time we go X? bar over stock boost, we're getting secondary injection.

And this causes poor fuel milage, and maybe higher EGT every time we go over X? bar boost with the 155 bar break pressure injectors.

I agree I just hate to set them higher for the short bursts of high boost.
I mean if we ran them @ 25+ all the time then ya I could see it but really it's just not that big a deal.

I ordered some 155's and what I have now is set @ 139 so I'll report back once I recieve them and run some fuel through..