fess40
Boosting 20 psi
Posts: 94
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Post by fess40 on Aug 20, 2016 9:18:28 GMT -5
I'm running a home built ms2 v3.0 with the latest firmware. The car is basically a stock 2.3t wtih the exception of Stinger's header, exhaust, and FMIC. Everything is running pretty well but I was curious about a couple of things. My VE numbers seem a little high in the low rpm high load range. The rest doesn't seem too bad for starters, just going to need some more work. Is it typical to see numbers this high in that part of the table? Also another question I have is about injector setup. I'm running the stock brown top injectors but I'm not sure if I have all of the setting correct for them. I'm using 4 squirts per cycle. It runs fine but it just seems like a lot. If I try and run two it stumbles, dies, and won't restart. Thanks! Attachment Deleted |
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Post by Stinger on Aug 20, 2016 15:56:49 GMT -5
No, it's not normal to be in the 120's at 87% load and 900 rpm, especially with "incorporate AFR target" selected which "flattens" the table.
The inability to change from 4 to 2 squirts typically indicates an inaccurate dead time value.
Is the rest of your table tuned for proper AFR or are you just starting the process? Reason I ask is it's weird that the high numbers don't continue at those load values at higher rpm. The rest of the table looks relatively normal, it's just that one pocket of high numbers. So I'm trying to see if that's because it's not yet tuned elsewhere, or if that's a characteristic of the problem.
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fess40
Boosting 20 psi
Posts: 94
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Post by fess40 on Aug 20, 2016 18:24:49 GMT -5
It's tuned pretty well elsewhere. Idle is right on the money and cruising is spot on as well. It's just that area that's giving me trouble. I haven't gotten into boost much yet but it seems pretty good at 5-10lbs. It just tips into that region as I first let off of the clutch into first gear, doesn't seem to stumble at all. In fact with the stock LA3 and VAM I had horrible trailer hitching and the tendency to stall on occasion when coming to a stop. All of that has been remedied now.
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Post by Stinger on Aug 20, 2016 18:44:47 GMT -5
Seeing a datalog of it in that area would certainly help see how it works with those values.
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fess40
Boosting 20 psi
Posts: 94
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Post by fess40 on Aug 20, 2016 21:22:56 GMT -5
Here is a quick log I made yesterday. I was using autotune at the same time so the VE numbers won't quite match the tune I posted earlier today but the differences should be fairly negligible Attachment Deleted. |
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Post by Stinger on Aug 30, 2016 0:47:50 GMT -5
Hmm, it's hard to tell exactly what happens in those cells since it blasts through them so fast but I'd agree that it doesn't seem like it goes pig rich.
You can try messing with the Accel enrichment but I don't think it's going to fix it. Unfortunately I don't have any other ideas what's causing it.
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