I have a bit more disassembly and coding work to do before @V8bait tests it with all the scopes attached to verify it is working correctly.
Lets talk Aux fueling.. Shotgun or PI?
- Thread starter Clean WHP
- Start date
I have a bit more disassembly and coding work to do before @V8bait tests it with all the scopes attached to verify it is working correctly.
I wanted to clarify this a bit as I'm not just changing it from one to the other. The end goal is that they both will be shut off, and not just for misfire events. Anything that causes an injector to shutoff will be applied to that cylinders coil as well.
Thanks for the clarification, I knew that from our discussion in a different thread but forgot to mention that. I've edited my first post for clarification.
Since we are getting insider information, @jyamona is there any info on the possibility of the DME controlling a second HPFP for a double barrel setup?
I remembered him saying he's working with @doublespaces to get it running but who knows whens that's going to happen. They have a bunch of stuff they're working on
Here's another log done on Map 6 i included my boost targets as well. Still more tuning to be done
https://datazap.me/u/lazyxwizard/shotgun-4?log=0&data=1-4-10
https://datazap.me/u/lazyxwizard/shotgun-4?log=0&data=1-4-10
Attachments
I think PI is brilliant with a map well tuned to your car. I was using a one size fits all map and was getting horrible overfueling across the board, even to the point of having it turn on when cruising at 40 mph at ~2k rpm and getting on the gas, leading to the car bucking horribly. now i borrowed a mates map who is also using an on3 turbo setup with 6AT and PI kicks in at appropriate times
The map supplied with the aic was meant for twin turbo, sounds like your mate retuned his for single and that's way it was running properly
The original map was basically a base map and a good starting point that's all
Don't know the whole story but that what it sounds like from what you told us
Pi can be great if tuned properly and everything is running right but god forbid something was to go wrong and an injector had to shut down
If @jyamona gets this implemented properly we have a cheap way of running high hp safely.
At this moment either its double barrel or syvecs with pi but it doesnt work with auto trans so not ideal for most
Mhd will be the solution eventually we all have to lay off and give them time to get it right
But small updates would be great to keep the impatient customers happy
I personally would pick DI any day. The biggest reasons is that it is safer, and I don’t have to worry about another controller.
Also speaking on power- we all love the n54 and it’s a very very capable motor. 700whp is generally 28-30psi, which is A LOT of power/boost compared to the original power output. That being said, I believe you are possibly at risk for damaging your motor trying to run that much power.
There’s been all these recent blown motors with single turbos and quite frankly, it makes me worried. I just wanted to express my concerns because I would hate to see your beautiful Le Mans blow its engine.
TLDR: I guess what I am saying is although the n54 is capable, do not be surprised if something goes wrong. You are more than doubling its original output.
Also speaking on power- we all love the n54 and it’s a very very capable motor. 700whp is generally 28-30psi, which is A LOT of power/boost compared to the original power output. That being said, I believe you are possibly at risk for damaging your motor trying to run that much power.
There’s been all these recent blown motors with single turbos and quite frankly, it makes me worried. I just wanted to express my concerns because I would hate to see your beautiful Le Mans blow its engine.
TLDR: I guess what I am saying is although the n54 is capable, do not be surprised if something goes wrong. You are more than doubling its original output.
While I agree that I also hear all the time of PI induced blown N54 engines, it seems a bit overblown, yeah? Do we have any first hand accounts of PI ruining an engine of anyone that regularly posts on the forums? While I'm sure they exist, I can't remember running across any threads where there was, and there are hundreds of people running PI on high HP N54 applications without issues. Most blown engines I remember reading about seem to have come apart after running a lot of boost while pulling timing, or having inadequate fuel.
I prefer one fuel system, so I'll overdrive with a shotgun when the turbo(s) go in, or maybe move to the M4 fueling system if @BQTuning figures it out. This is why my current round of upgrades were to get the fuel system and ignition system rocking, minus installing my shotgun which we'll do when turbo(s) and HPFP go in.
But that said, PI has been used in lots of places for a long long time. I suspect the bigger issue with failures probably has to do with inadequate factors - poor work, hack tuners (the N54 having enough safeguards that lots of people can play), shortcuts, worn out cars, etc. I suspect - built right and cared for right - for whatever configuration one chooses, one can run a pretty reliable car.
Filippo
But that said, PI has been used in lots of places for a long long time. I suspect the bigger issue with failures probably has to do with inadequate factors - poor work, hack tuners (the N54 having enough safeguards that lots of people can play), shortcuts, worn out cars, etc. I suspect - built right and cared for right - for whatever configuration one chooses, one can run a pretty reliable car.
Filippo
I personally know of one motor that let go under pi when the cylinder shut down
And had it happen to me but caught the di shutdown in time. I could feel it.
Its really only people that keep the power on that do blow the motors but you can only do this a number of times and eventually the motor will let go
Personally i backed off the power level in my car as its totally unnecessary and undrivable to run with kind of hp safely and switched over to double barrel
And had it happen to me but caught the di shutdown in time. I could feel it.
Its really only people that keep the power on that do blow the motors but you can only do this a number of times and eventually the motor will let go
Personally i backed off the power level in my car as its totally unnecessary and undrivable to run with kind of hp safely and switched over to double barrel
Last edited:
You wasted no time ic lol
right on... gonna get this going and see what we can make of it!
