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I bought new injectors for my H/C/I C5 Z06 and I'm having second thoughts on my choice. Currently at 450rwhp on stock injectors, and will probably be around 470ish after Fast 102 intake is put in. I bought the stock-style fuel rail setup from Fast (aka ls2) but it does come with risers for the LS1/LS6 Ev1 injectors. I only bring that up as I do need to make it fit!
Anyways, I'm concerned about the spray pattern of the Bosch Green Giants (42lb/hr at 3bar) that I bought (skip to 3:16). As you can see from the video and it's product descriptions it's a split pattern.
I'm worried about this pattern being not good for our valve layouts and more for DOHC setups, and that while It will "work" it might be sub-optimal and not worth installing. What spray pattern works best for us?
Obviously, I could just get an OEM syle (and may) but I'm past the 30 days return limits so this is a slightly expensive lesson if I don't use what I already bought.
Lastly, aside from the spray pattern and more on the flow rate at our 58psi rated fuel rails.
Do you think these are undersized at all?
My LS6 was making the same power and I was using 42 lb EV1 flow matched injectors from Fuel Injector Connection on a FAST 102 with the spacers you mentioned. Ran well, but can't really answer your spray pattern question.
They are definitely not undersized. 42lb can go to 500rwhp and beyond, especially n/a. The link you posted is for the Bosch Gen III injector. Is there a reason you went with Gen III vs the conventional Ford Motorsport Gen I 42lb 4-hole injectors?
At the time I was not aware, and was more focused on flow rate and $.
Well do you have a spray pattern video of the factory 28lb injectors, because they are also Gen III ...
Gen III on the left, Gen I on the right. I'd be interested to hear people's feedback on tuning difficulties with the Gen III. I purchased a set of 42lb Gen III that I plan on using with my heads/ cam build.
Injector Spray Patterns
