Is a tune needed when switching brands of 1000cc injectors?
 

It came up earlier in a conversation trying to determine if a tune was needed when switching from fic1000cc to precision 1000cc. My opinion was yes you should retune due to different brands of injectors having different flow patterns and causing the fuel to atomize differently.

I was just wondering if I was giving bad info or if I was correct?

Re: Is a tune needed when switching brands of 1000cc injectors?
 

yes. They will have different battery offsets which will throw off the fueling everywhere without setting the appropriate dead times and tweaking the tune.

Re: Is a tune needed when switching brands of 1000cc injectors?
 

Thanks Blake. I was thinking at the very least the tune needs to be tweaked as you mentioned.

Re: Is a tune needed when switching brands of 1000cc injectors?
 

Agreed, I would strongly recommend retuning. But why the switch? If I'm understanding correctly you'd be going from a much newer technology to an older technology?

I'm guessing you're using our 900cc high impedance injectors which flow the same as injectors referred to as 1000s from other companies. (These are ours: http://fuelinjectorclinic.com/d-b-h/IS115-0900H)

http://fuelinjectorclinic.com/image/...H4-300x300.jpg