Loss of power, new injectors.

I own a 2000 jetta, 5 speed. It has a straight piped exhaust, EGR delete. Well after reading about upgraded nozzles I decided to take the plunge and buy some. I bought .216 nozzles anx and ready for this insane amount of horse power they would add over the stock. Well I installed a boost gauge and watch the readings on the stock nozzles and they were putting out at about red line 22pnds of boost. Well with the new injectors installed the car is running like complete crap. At about 4k the car makes 15 pnds of boost max and then at red line loses power and boost slowly goes down. The car makes no smoke at all. I've tried adjusting the IQ and I've tried doing the hammer mod. Nothing changes. The fuel filter was changed about 1k miles ago. Everything worked great with the old nozzles installed. Now with the new it seems like it has was less power. Car also has no check engine lights according to VAGS. Any suggestions? Thanks.

Were the nozzles professionally installed?
Were they pop tested?

I installed them. And the guy I bought them from claimed they were pop tested but I'm not convinced at this point

So to be clear....you bought used injectors with .216 nozzles already installed?

No, I bought new nozzles from a good buddy of mine that wrecked his car. They were still new in the containers. He claimed they were already pop tested and ready for a swap. Sorry for the confusion

If they were just nozzles then they were not pop tested.
They need to be installed on the injector bodies then adjusted to pop at the correct pressures.

Ok, that would make sense. Thank you for that clarification. So would a pop test be necessary for them to run correctly? I guess what I mean is would they be running this bad not being pop tested?

Yes, espically if the nozzles are bigger, they will flow more. The springs are shimmed to a smaller hole than your running now.

Is there anyone in particular that can be suggested to do a pop test?

Frank06 is a member on here.
Kermatdi is a member on here.
Drive by wire another member.
They do them , just not sure if they will take your nozzles and install them...... It's a warranty issue .

You can google for a diesel injection shop in your area and talk to them if they can pop test ,clean and install your nozzles.

I'm sure others have probably more recommendations .

Alright, awesome. Thank you.

I tried to send a private message to both of them and it says neither member can be found

Sorry
It's franko6 That's an o not a zero.

Lol. Thanks.

Here's drivebiwire

https://www.dbwllc.net/select-and-order-vw-injectors

Good luck

What nozzles are they? Who made them?

Bosario maybe, I believe is what they said.

Perhaps Bosio? But, with the way the Chinese like to use names similar to big-name products it could be Bosario.

Send the nozzles and injectors off to be done properly. If the nozzles are some cheap knock-off junk you're going to, bottom line, need to replace them- anywhere you send these off to will be able to tell you: or, you can open up one of your injectors and take a look (as long as you don't mar anything and keep pieces together it's not likely going to hurt)- but this won't necessarily gain you anything anyway (other than knowing sooner).

Kerma nozzles are done by DBW. If they are chinese nozzles you may also sadly have chinese bodys. At which point they cant even be used as a core because nobody will touch them.

I put an order through kermatdi and ordered new injectors and a calibration, rebuild. I will see what happens when those are installed