Most liked posts in thread: BIGGER is BETTER!!! A FAQ on the Bosch 550cc injectors for R53

Odds are they did not spec a 550 injector from the factory because their simply is no need for a factory car.
Why add all that that capacity if you don't need it? Its only going to make the car more difficult to get to idle on the factory ecu.
Granted todays tuners have gotten their tuning down in such a way to circumvent the ecu in a way to make it work.
Even with my 450cc injectors i am just now at the limit of those injectors with probably the 1 percentile of what power most mini owners will ever have.
I guess the only downside to having mynes put the 550cc injectors into your car would be if the factory map got restored vs what they had programed in
And even in that case i can only hope they have way to get it back to the hopefully correct scaling in order to restore order to your car. outside of that, no real downside that i can see. The 550s are in-fact quality parts.
Nitro when Goaljinky said bigger is better he may not have been talking about injectors. :arf:

 

It wasn't a stupid question it goes to the heart of your thread... You say bigger is better, some of us just wanted to know why???? You mentioned most with a blown engine will not post it up. Probably true, but if you have had those same people coming to you for a new engine you could have just said so to back up your theory of playing Russian Roulette??? There has got to be more to just throwing in a larger injector and detuning/scaling it down to said engine.. All these street cars are running the stock ECU..
MINI,BMW and the other car manufactures have scores of engineers working for them. If you have figured out something that they haven't well my friend you need to patent it!!!

 

If a car has 380s as mine and it is already tuned; would (with no other changes to the car) installing 550 injectors by themselves and then a new tune make any more power?

....or would the only performance improvement be in a better power to weight ratio, achieved from reducing the mass of my wallet?

 

I think you have already accomplished that "mod"


Injectors being run full out are not consistent, and are more prone to failure. Almost all injectors have a "sweet spot" to achieve optimal performance, and everyone must also consider our gas is going to the side of terrible. As more Ethanol is added, the more fuel that is required to achieve the same performance.

 

Mark, I am sure I can locate on several posts on forum,s that you stated you were happy with your MINI and not looking to change out more parts?
The thought of bigger injectors/more power(?) must have you re thinking those comments than?

When you increase horsepower to an engine you may need to change out other relative parts involved. Not just one part but many may need to be upgraded or changed?
In the case of installing larger new high quality injectors the one big attribute is having an injector running on less duty cycle and more available fuel if demands are there. Especially on a engine that is run spiritedly and such a small small investment.Seems reasonable? And if the benefits are an increase in power than you win both ways, safety and power...seems easy for me to grasp that idea!

 

Well how about this:

If a Mini motor is custom tuned by any tuner to its Max (sweet tune!) and everything including the injectors are operating in the correct ranges; would then installing larger injectors and nothing else, allow the tuner to get more power?

Answers from those with and/or actually do custom tuning would be thought of most highly.

 

Well mark...From a stand point if you can feed an engine more fuel/air and can get ignited than you will make more power!!!

I will leave MYNES to post the tuning aspect because at this present time we can not call me an ECU tuner..

 

Well the last part of your post would be correct. Now for those that have actual knowledge in tuning a Mini to answer....

 

Auh maybe you did not catch the hint mark?? :lol:
Let me put it this way if you get an FA kit from MYNES and need help contact MYNES if they are not around drop me a pm.

attempting to be the Last Post king today on that droid today are we? :lol:

 

So, you do dyno tuning and you don't have one??? Come on! Why don't you just say you don't want to post it here?

I'll start then. 12.0

See paragraph 11.

 

12.0 is pretty lean....

 

^^^

 

and there you have it.. a smoke and mirror show boys!!!!

 

Thanks

It would still be nice to have it on the dyno plots to prove an undersized injector can't keep the WOT AFR below 11.0-11.7. That really is the key metric.

 

^^^^^^^^^^

 

Staying off-topic................
Thanks Ian, thanks was a fun ride.
I hope he did not get into trouble for passing on the opposite side of the point at the 8 minute mark.
Nah, likely not!

Geez, can we stop talking about who's got the biggest injectors already?

 

minimark instead of quoting yourself over and over, which is kinda strange?, why don't you just ask "your tuner"? I'm perplexed why you are even asking for answers here?