Fuel Cut #2

[sleepydsm]

I have a few questions:

1) I have MAF Translator v1.3 The third dipswitch from the left is fuel cut on/off. It is currently in the lower position. Is this fuel cut on or off?

2)Cruising on the highway, if I drop it intho 4th and go to WOT, at about 4500rpm I get a quick jerk/pop/miss (along with a little poof of smoke) and if I keep on it, it happens again at 5500rpm This does not happen at all if I do a pull from a standing start at WOT. If I take off in 1st and floor it through the gears I don't get the pop/jerk/miss.

In the past week or so I have asked many similiar questions, and I appologize for that. I am really stumped here, and thats why I'm looking for help from all of you who have a lot more knowledge than me! I'm trying to learn just like everyone else, and this is just part of that. So again, thanks all for your input!
-Kevin

For the 10,000th time:
BR 20g
HKS external WG
660cc injectors
255hp
afpr
3" gm maf
maft
5 knob afc
fmic
exhaust
MBC
greddy type rs

[sleepydsm]

bump. I am getting fuel cut for sure. I thought the MAFT took care of that?

[Shane@DBPerformance]

How could it? Fuel cut is programmed into the ECU. Unless you change the program inside the ECU, it will always be there. The only way the MAFT could keep you from hitting fuel cut, is if it doesn't report enough airflow to the ECU to keep the ECU from going into fuel cut mode. That could have the very bad side effect of you running too lean. Most people don't mess with the fuel cut stuff on the MAFT because it is a junk option.

[dsm10sec]

Initial setup:

Set the MODE switch to match the vehicle configuration.

MODE SWITCH: set as follows
1 - OFF for 3” MAF ON for 3.5” MAF
2 - OFF for a 1G (90 - 94) vehicle ON for a 2G (95 - 99) vehicle
3 - OFF for NO Fuel Cut Limiter, ON to PREVENT FUEL CUT
4 - OFF for Flat AUX fuel control, ON for Contoured AUX fuel mode.

[BOVADDICT]

I have that problem too. Went away when i turned my boost down. Stock turbo and injectors for me though. I have the maft setup though too, ill try messing with those switches though. Right now everything is on 0 and turned off because again i don't know tuning.

[EclipseGST]

Boost leak test results please!

[TheBlizzard]

I had the same problem in my Laser. When the boost was down it didn't do it, when it was up it did it only when it was colder out. I could never really figure out why it did it but I highly doubt it is fuel cut.

[JET]

You will know if it is fuel cut. It is not a pop/miss. All of a sudden you lose all power and you will plant your face in the steering wheel if you aren't careful. It is very violent. This just sounds like a miss and you need to do some tuning. I don't see a logger anywhere on that list. If you don't have one, just stop posting or someone is likely to ban you. :)

[slowbubblecar]

with fuel cut, it will feel like you are going, then jerk (not go anywhere) and keep going again if you keep on it. It would go back and forth if that is the problem. Paintballpro-you don't have fuel cut. It could be the same problem he has, but it feels like a misfire or a really bad tune on your car.

[sleepydsm]

with fuel cut, it will feel like you are going, then jerk (not go anywhere) and keep going again if you keep on it. It would go back and forth if that is the problem. Paintballpro-you don't have fuel cut. It could be the same problem he has, but it feels like a misfire or a really bad tune on your car.

That is it exactly. And I have the instructions for my maf, it is set correctly, and I am not using that for adjusting. Its set for 650cc injectors, 3" gm maf, etc. I was just looking for a way to get around fuel cut, so I could run higher boost. And at first I was trying to confirm that it was fuel cut. The tuning I have done using the AFC isnt that bad, from a dig I can launch the car and go through all the gears fine without that "fuel cut" issue, and it pulls nicely with 0 knock. Also there are no boost leaks.

I'm sorry guys, I am trying to learn here. Please understand that I don't know much yet! Again, thanks for all the input. I guess the boost is gonna stay down, and the car is gonna stay "slow".