Bigger injectors = same flow???

[praivo]

Hi,

I'm running E85 and wanted to get rid of the piggyback I was using, so I went to eBay and bought a set of 1NZ injectors (23250-21020). As the 1NZ has about 1.5 times the displacement and power but probably about the same fuel pressure (44 to 50 psi for the 1NZ but I haven't found any numbers for the 1SZ, so it's just an assumption), I expected the injectors to also deliver about 1.5 times the amount of fuel which would be just right for E85.

So you can imagine my surprise when I installed them, took the car for a test drive, and saw the MIL come on with P0171 and the long-term fuel trim (after 3 starts) go as high as +40 %!

Does anyone has any idea what the hell is going on here? The only thing I can think of is that the new injectors are not, in fact, what they claim to be, but that doesn't seem too likely to me.

Thanks.