anyone good with MS tuning?

[shiboujin]

Can someone take a look at my logs and msq? it seems like any time I get over 130kpa, the car detonates and cuts out. I also need to figure out that reset...

http://www.slidewaysonline.com/files/001.zip

Ms1 V3 running wasted coil on plug
M50B25 inline 6 non vanos 2.5 liter

[shiboujin]

my firmware was old so I flashed it with the latest shit. loaded up the msq with no warnings and went for a drive. Same shit!

OMG heres my msq in picture format!

[blueapplesoda]

what size injectors are you using, and what is your fuel pressure? what kind of pump are you using?

did you check your fuel filter/fpr/pump to see if everything is working correctly?

I had a plugged fuel filter after using it for about 10,000 miles, and i thought it was ms causing issues, leaning out all sorts of weird, so i kept adjusting it. I then said it cant be continuously getting worse by itself, and started looking in other places and found that maintenance brought my odd and random lean afrs back into spec

[shiboujin]

I'm using 42# brand new ford racing injectors (well brand new since my M20T). Fuel pressure is about 45psi (3 bar iirc). and I'm using a walbro 255 from my previous setup.

Fuel system is good. It's untouched from my M20T. Lean isn't my issue, the 6 foot flame I shot the other day was fun too. But any fuel problems wouldn't manifest in the MS resets I'm getting. I fucked with the coil wiring the other day and now it resets just at free rev. I'm fairly certain its just my coil wiring thats the blame. I'm going to redo all of it.

[nando]

a couple things:

your injector opening time is wrong. I had the spec sheets for the ford racing injector somewhere at some point.. but the opening time is 1.13ms from memory, I also have the voltage correction settings you need but they're on my laptop. This will mean you have to retune parts of the map.

You have a lot of room to decrease req_fuel. you could multiply your req_fuel by .55 and your VE table by 1.8181. This doesn't affect the tune, it just gives you more resolution.

you have big lumps in your VE table. Look at the low-load area just after idle for example.

your ignition map looks very retarded. It's good to start out safe, but you need to hit up a dyno and get that dialed in. a retarded engine map can actually harm your engine by causing high EGTs.

First you need to fix your wiring.. don't mess with anything in the tune until you get the resets figured out. Start with your grounds.

[shiboujin]

Thanks for the input nando. Can you verify the opening time and voltage correction settings?

the req_fuel was fucked with to get the car idling. I can get it as low as 6.0 before the car starts stuttering. Right now, I think I have it set to 7.

I'm not concerned with the VE table or spark table in the least. I just need to get the car solid enough that I can take it to my tuner. I don't want them having to mess with wiring, just MS settings. Ideally just the VE/spark tables. The spark and fuel maps I'm using are from JonK and are base maps to be safe for now. They are proven to work and thats all I need to get it to the tuner.

Basically, my problem at this point (you can probably tell) is my wiring. I'm actually very confident my grounding is good now. Everything grounds to the block and the block grounds to the neg terminal of the battery. DIYAutotune.com verified my grounding scheme was good and I'm fairly sure it is executed well enough. I've narrowed down my problems to something to do with the coils. So I'm 100% rewiring it. I'm trying to find or get a spare harness for the coils since my existing one is flimsy and could possibly be the problem.

so freaking close >_<

[nando]

you misunderstood me.. you need to decrease req_fuel and increase your VE table by the same amounts, at the same time. you can't adjust one without adjusting the other. if you highlight your entire VE table and click on the * button in the top right, you can multiply it by the factor I suggested. You'd want to do this before you bring it in for tuning. if you want to be conservative, use .6 and 1.6666.

[z31maniac]

Basically, my problem at this point (you can probably tell) is my wiring.

Wait, weren't you telling us how making your own harness was better than using the factory one?

[shiboujin]

you misunderstood me.. you need to decrease req_fuel and increase your VE table by the same amounts, at the same time. you can't adjust one without adjusting the other. if you highlight your entire VE table and click on the * button in the top right, you can multiply it by the factor I suggested. You'd want to do this before you bring it in for tuning. if you want to be conservative, use .6 and 1.6666.

it originally came to me at 6.3. I raised it to the 8.whatever you saw above for testing purposes (car idled at like 12AFR with that req_fuel). So the VE table is already matched for 6.3 req_fuel.

Wait, weren't you telling us how making your own harness was better than using the factory one?

making your own harness isn't always the best option. But when youre like me and dont have an engine harness, its better to make your own. I would use the stock harness if you have it and want to. I prefer to make my own.

[nando]

it originally came to me at 6.3. I raised it to the 8.whatever you saw above for testing purposes (car idled at like 12AFR with that req_fuel). So the VE table is already matched for 6.3 req_fuel.

that is why you multiply the VE table by 1.666. You are cutting the req_fuel to 60% of what it was and adding the difference to the VE table. req_fuel is not a hard number, the calculator just gets you into the ball park. By having such a high value you are missing out on half the possible resolution in your VE table.

[shiboujin]

True that. Will do.

[shiboujin]

So still the same problems. I get the resets at free rev now but thats because I build boost at free rev. I wondering why...

ive grounded the coils properly, put a capacitor to the coil powers so they always get 12v and checked continuity between all plugs. Somehow, cylinders 2 and 4 interconnected and firing each other off. I tracked the problem to a connector i had made months ago. You'd figure fixing that would change something. Still runs the same. I've tried lowering dwell, raising dwell, raising duration, nothing seems to have an effect. WTF?!

[lifeiskaos]

like we talked about bro, gap the plugs to .030 and lean it out and see if you still have the problem. dont touch the timing though until the problem goes away. you dont want to change too much and cause massive detonation and such.

[shiboujin]

Think I figured out my problem. long story short. the car ran the same regardless if cylinder number 2 was plugged in or not. But this is why I picked coil #2





A friend is on his way as we speak with a replacement harness. It's going in and I'm 100% redoing ALL my spark wiring.

[lifeiskaos]

doh! hope that fixes everything!