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Read the WELCOME ALL BMWFANATICS post.
JB4 Stage 3 135i N54 Build Thread
- Thread starter Nicbyte
- Start date
andre320D said:bybyM3 said:
opcorn:
+1
UpNcOmiNg!
Events Organiser
:roflol: :roflol: Ja neh.
Nicbyte
Banned
David1 said:
This is map 7 with Nf Ultra
Why is this bad? I'll speak to Terry but BMS just to get his input.
Nicbyte said:David1 said:
This is map 7 with Nf Ultra
Why is this bad? I'll speak to Terry but BMS just to get his input. She codes in map 5 with NF not enough boost so I raised the boost limit to 21PSI, no more codes, On map 5 with no NF (daily driving) I set boost to 19PSI limit. Car is happy and she goes well.
bybyM3
Member
David1 said:
Ok seriously dude....your turbos gona blow very soon.....
In any case your you might be having some fueling issues or something as see how drastically your boost drops at 4000rpm, and your timming is poor as well.....
If you want help on making you car last and getting more consistent performance drop me a pm......
I can tell you now, no way would terry be happy as they clearly state straight race gas for 18.5psi
Good luck champ
Nic...
Everyone here who has done this before you will offer good and free advice, advice which while it won't make tons of power will make your car last longer (motorplan or not).
Firstly, your first screenshot of map 6 has the jb demanding so much of boost from the motor that something happens to your boost and at the 4000rpm range, you will see the target boost fall together with a closure of the throttle plate by the dme. These are not ordinary map 6 targets. These targets have been jacked up! Everyone who knows their way around a jb will know this. Please reset defaults via your jb4 interface.
Secondly. Your afr's are not stable as well as being a little high compared to the "norm"
Next, your open fuel loop setting is very low at a value of 48. Settings this low must only be used when combined with a BMS back end flash or custom written flash. This allows the fueling to be transferred back to the dme and no enrichment will be forced upon the dme to keep the afr in check. This is probably the reason your afrs are high. Honestly speaking? Have you had a back end flash loaded and if so which one? If you do it will also explain your high boost set points and there is an option to be selected on the jb via steering wheel control to either choose the higher of jb or dme boost targeting or to follow the jb only.
Lastly with regards to your timing, it is terribly low. You will see in second gear as the car pulls the timing is healthy, then it falls through the floor and never recovers after that. This is usually a sign of poor fuel, pinging/detonation/breaking up so the dme retards the timing to save the motor.
You use the ave ign value to determine how much of timing the dme is cutting to safely run, values between 3-6 indicate poor fuel and or high intake air temp (iat) and the dme adjusts accordingly to prevent damage, in my opinion I would not run map7 or a custom map 6 like you are with ave ign values this high, any number between 0 and 1 would be optimal. You will only achieve these ave ign numbers with proper race fuel mixes or large amounts of water meth and pump or nf and ethanol mixes.
On your second screenshot of half a map 7 pull, you will immediately see that the car never actually delivers what the jb is asking for In terms of boost targets. The turbos should be able to achieve its targets or exceed them by a small margin.
You will also see that the ave ign values although higher than your previous log are still rising as the dme realizes that there isn't sufficient octane to support the request of the jb.
Your timing numbers look much better on this run and your can clearly see they hold together for that short period of time of the screenshot.
Terry very clearly says that map 7 can only be used with straight 100octane race gas or better, even a whole bottle of nf mixed with 20lt of fuel will not give you sufficient octane to run map 7, this is where ethanol fuel mixes and methanol injection comes Into play.
I would hazard a guess that on map 5 or map 2 with your current set up the car will pull cleaner and turn out better logs. Keep the nf in the tank and watch your ave ign values and you will be good to go.
Lastly, please don't keep changing your max boost values, set it at 20psi and leave it there. Also please reset your defaults and choose the correct drop down for your jb. It's either g5 iso or g5iso with back end flash (the latter only you or your tuner will honestly know)
Stay focused on building your car correctly and logging each mod before adding another, only when your logs are clean do you move onto the next mod.
The community will assist you as best we can with good advice but it's up to you to use it.
:thumbs:
Everyone here who has done this before you will offer good and free advice, advice which while it won't make tons of power will make your car last longer (motorplan or not).
Firstly, your first screenshot of map 6 has the jb demanding so much of boost from the motor that something happens to your boost and at the 4000rpm range, you will see the target boost fall together with a closure of the throttle plate by the dme. These are not ordinary map 6 targets. These targets have been jacked up! Everyone who knows their way around a jb will know this. Please reset defaults via your jb4 interface.
Secondly. Your afr's are not stable as well as being a little high compared to the "norm"
Next, your open fuel loop setting is very low at a value of 48. Settings this low must only be used when combined with a BMS back end flash or custom written flash. This allows the fueling to be transferred back to the dme and no enrichment will be forced upon the dme to keep the afr in check. This is probably the reason your afrs are high. Honestly speaking? Have you had a back end flash loaded and if so which one? If you do it will also explain your high boost set points and there is an option to be selected on the jb via steering wheel control to either choose the higher of jb or dme boost targeting or to follow the jb only.
Lastly with regards to your timing, it is terribly low. You will see in second gear as the car pulls the timing is healthy, then it falls through the floor and never recovers after that. This is usually a sign of poor fuel, pinging/detonation/breaking up so the dme retards the timing to save the motor.
You use the ave ign value to determine how much of timing the dme is cutting to safely run, values between 3-6 indicate poor fuel and or high intake air temp (iat) and the dme adjusts accordingly to prevent damage, in my opinion I would not run map7 or a custom map 6 like you are with ave ign values this high, any number between 0 and 1 would be optimal. You will only achieve these ave ign numbers with proper race fuel mixes or large amounts of water meth and pump or nf and ethanol mixes.
On your second screenshot of half a map 7 pull, you will immediately see that the car never actually delivers what the jb is asking for In terms of boost targets. The turbos should be able to achieve its targets or exceed them by a small margin.
You will also see that the ave ign values although higher than your previous log are still rising as the dme realizes that there isn't sufficient octane to support the request of the jb.
Your timing numbers look much better on this run and your can clearly see they hold together for that short period of time of the screenshot.
Terry very clearly says that map 7 can only be used with straight 100octane race gas or better, even a whole bottle of nf mixed with 20lt of fuel will not give you sufficient octane to run map 7, this is where ethanol fuel mixes and methanol injection comes Into play.
I would hazard a guess that on map 5 or map 2 with your current set up the car will pull cleaner and turn out better logs. Keep the nf in the tank and watch your ave ign values and you will be good to go.
Lastly, please don't keep changing your max boost values, set it at 20psi and leave it there. Also please reset your defaults and choose the correct drop down for your jb. It's either g5 iso or g5iso with back end flash (the latter only you or your tuner will honestly know)
Stay focused on building your car correctly and logging each mod before adding another, only when your logs are clean do you move onto the next mod.
The community will assist you as best we can with good advice but it's up to you to use it.
:thumbs:
