BIGGER is BETTER!!! A FAQ on the Bosch 550cc injectors for R53

The software has nothing to do with it, Since when will the mini just spit out a data-log like that? Must be well Revolutionary?
Anyway what I'm getting at is 112 or even 130 percent is a impossible duty cycle number. Its simply not possible to spray more than the injector is capable of flowing at 100% the injector is effectively locked open. Thus with the injector unable to provide more flow than designed for the engine will go into a lean mode. I think what your trying to explain is if the injector is maxed out its dangerous for the engine.
Earlier you explained that a mini with a stock blower and a pulley was dangerously close to the limits.
I am having a hard time understanding how you can be selling the sprintex stage one on a stock tune with stock injectors because of this thread but thats another problem entirely.
I really did not need the do some research comment, I probably know more about this than you seem to assume.

 

Thanks, that would he very professional of you!!!

 

Thanks, so now can we keep this on topic now about 550cc injectors and not about 450cc injectors, RMW and about your tune. I wish you could advertise yourself and your vendor in a new thread. I would greatly appreciate that very much.

 

Thank you Remember why we all left NAM?

 

Colin, you're right in that the injector can't spray more than 100% of it's capacity, but that's not what the duty cycle is. If the injectors are wide open, at 100% of their capacity, and the car's RPMs are pushed higher once this limit is reached, you are going to be above 100% duty cycle (and quite possibly/probably running lean). The injectors spraying at 100% (or effectively locked open, as you said, spraying as much as they physically can) is not the same thing as 100% duty cycle, they're two totally different things. It's a question of semantics...

 

Let me try this again...

1. The bickering has to stop. I'm not above using the ban hammer.

2. Duty Cycle is a calculated result. It is a tool for use to determine if an injector size can handle the needs of an engine. It does not mean that that an injector can go over 100%, it only means that an injector as sized can be wrong for the application. It is an accepted rule of thumb that the calculated value should not exceed 80% of an injectors Duty Cycle. If when calculating the Duty Cycle you derive results that are above 80% then one should look to use a larger injector. Rocket Science it is not and why some of you keep harping on this matter I do not know.

 

I guess it would be easier to visualize to some people. Some get it and some don't. Let me help for people who are willing to understand. And thanks Nathan on the above post. I don't understand the bickering either.

 

Independant explaination:

Injector Duty Cycle Explained

 

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Ha...just kidding...25 pages of tainted banter amongst adults. What a Country. Some folks just need ta be more resilient I guess as it seems there's a whole lota ruffed up feathers here. Having read 249 entries about which fuel injector to choose, I'm very certain I'm now able to choose an injector size, a vendor and a tuner... Understand the meaning here.

I need serious beer.:beer

 

Really?....im more confused now than ever :lol: But hopefully in a few months we will have a local expert on the subject :ihih:

 

I know this was a very LONG thread but quite a few years have passed and a lot more experience/solutions have maybe come to pass. What new information is available?