But I have to give some  praise to Andrey at Toronto injectors.

After I fired up the 5.3L in my 38 Chev, I found it running like crap and had a P0300 random misfire code.

A diagnose found 2 injectors not clicking like the others.

I sent them out to www.torontoinjectors.com and was blown away by Andrey's service.

I sent them out on Monday, got them back on Thursday.

He thoroughly cleaned them, replaced the filters, O rings and did a full diagnose on them with a computer generated graph report with flow comparison.

All came within 2% except one injector  he recommended replacing, which I did.

Installed them back in the car and it ran like a champ. I couldn't be more pleased with his service.