Just thought I would put my findings and info out here to help others out.
When I first put this engine together last year I put the Blue Giants in, at the time I did not know they had a VERY wide cone spray pattern, there had been debate and discussion on these on here and other sites. I tuned around them basically but it never did feel right and it did give me trouble tuning. I figured it was just me. I took my intake off in late summer to check a knock sensor and I confirmed that the Blue Giants are not made for our engines. The intake port front and rear walls were spotless, the fuel spray did a great job of cleaning the port walls, kind of wasting a good spray pattern especially when its supposed to hit the back of the intake valve.
I called the guys at Fuel Injector Connection and talked to Jon, the owner, he was very helpful. I told him which injectors I had and he conformed once again that they should not be used in a LS based engine and they have a 30* cone angle. He hooked me up with a new set of Bosch injectors with a 6* cone. Just thought I would put my findings and info out here to help others out.
When I first put this engine together last year I put the Blue Giants in, at the time I did not know they had a VERY wide cone spray pattern, there had been debate and discussion on these on here and other sites. I tuned around them basically but it never did feel right and it did give me trouble tuning. I figured it was just me. I took my intake off in late summer to check a knock sensor and I confirmed that the Blue Giants are not made for our engines. The intake port front and rear walls were spotless, the fuel spray did a great job of cleaning the port walls, kind of wasting a good spray pattern especially when its supposed to hit the back of the intake valve.
I called the guys at Fuel Injector Connection and talked to Jon, the owner, he was very helpful. I told him which injectors I had and he conformed once again that they should not be used in a LS based engine and they have a 30* cone angle. He hooked me up with a new set of Bosch injectors with a 6* cone. The duty cycle only hits 65% at WOT so I have room to do more mods when I get bored with the current setup.
I went back to tuning, I used the information I found on Fords website for the 39 lb injectors and used the high and low slope data and voltage info and made new tables. It tuned fairly easy, my VE table had a major change over 4800 rpms. I attached my tune for others to check out and hopefully offer me some input. Perhaps Greg Banish can chime to let me know if I am going the right direction with the Ford to GM conversion stuff.