someone please help overfueling

[bens_cab]

ok james yur a diamond just went to car disconnected map sensor disconnected dump vale and put map in on its own and bingo problem solved

its hunting a bit on idle it will only tick over with rpm based enrichments on is that ok new data log

[T3Bunny]

As a general rule, you shouldn't run anything else off of the line to the ECU. I will ONLY run the fuel pressure regulator on that line as its got the same "agenda" going on. Your dump valve could be a culprit... I would move it somewhere else personally.

But that map sensor signal looks beyond weird... I have never seen one so steady. Something is wrong there for sure. If your dump valve is leaking.... it could possibly explain what we are seeing here. Even still I would not expect to see a flatline reading.

As for overall fueling, you change it in the required fuel on your first constants page. There are tools in their to narrow down your required fuel, and lots of tools elsewhere to sort it out. Usally I use the calculate required fuel in the constants section, then fiddle it up and down until the engine likes where its idling. Then I go to town tuning the VE table.

[bens_cab]

the map reading only cam down when i disconnected the dumpvalve vac now the car has leaned itself of i did run out off petrol on that log

the map does go up and down with throttle now just need to get it to idle nice at the moment its hunting the more i lean it off

also what temp should my fan cut in as a rule

[T3Bunny]

Heh, you figured it out before I managed to hit send! Cool, gonna download the new datalog.....

First part looks good, cept no o2 reading. Then the o2 comes online and stuff gets freaky again. Anyone know whats going on with everything kinda flatlining? Its like inverted from normal....

I think you might have too much authority given to the oxegen sensor...

[T3Bunny]

Richen it up then, I think its likely too lean right now. A trick with the LC-1 whaen your starting to tune, jumper it so its hot when you start. It needs to be setup so when cranking its turned off, but a few times hot running it during that point doesn't seem to hurt them. It will not read correctly before it warms up though.

Its possible thats what looks strange at the beginning. Honestly I don't think I have taken any datalogs with the LC-1 in warmup mode... Heh, I should datalog with customer cars more. My last 4 setups have all been using the LC-1.

I am still running an LM-1 in my own car. She is likely getting an LC-1 in a week or so. I want my LM-1 back to tune other cars!

EDIT: Put gas in it and toss out another log then. I missed that point.

[bens_cab]

try this one that other 1 i ran out of fuel

[T3Bunny]

Umm... Ya didn't attach anything!