? about gtd nozzels

[g-spec]

So i found some gtd nozzels and i was wondering how do i know they are actual gtd nozzels? and what kind of perforamnce gains can i look for on a 1.9 idi with a T3. I'm just rebuilding the motor now, i have already bought a fmic with 2.5 inch piping and 2.5 piping for the exhaust. This is gonna be a daily so im not going for crazy power....maybe run 20 psi or so...
any comments appreciated!
thanks Michal

[veeman]

The nozzles should have some sort of part number on them.  I'm sure if you posted it here, someone will tell you if they're the right numbers.

The ones I recently got for my 1.6 TD were DN0SD274, I believe.  

As far as performance, that depends...  I did some research in the archives and couldn't really find a definitive answer whether the nozzles make for a huge performance  improvement or not.  

Were your nozzles in good shape before?  In order to install the nozzles in your injectors, a shop will rebuild / pop test your injectors anyway, so some people attribute the increased performance / improved runability to that fact.  Not sure.   Regardless, I think GTD nozzles can't hurt your setup and since  they're new they'll certainly help if your nozzles had wear on them already.

In my case, my stock nozzles were pitted and leaky.  After putting in the GTD units, I noticed a decrease in the bluish-white smoke I used to see sitting in traffic going from idle to first gear (presumably the leaking fuel on the previous set).  Mileage went up a touch.  Power seemed to be a bit smoother up near the top of the rev range, but that could be because of the rebuild / equal breaking pressures as well.