No power and stumble off idle.

[aaimada]

lsvtec 81.25mm 10.2:1 compression gsc t1 cams zeroed. 1000cc grams injectors, 70mm throttle body, skunk 2 pro intake manifold, exedy twin disc clutch, ITR transmission. running N/A for now trying to brake in the motor and figure out this lack of power off idle. If I keep the revs up around 2000rpm and slip the clutch its fine. If it is allowed to go bellow that rpm then it bogs and barley can move the car. I did try to advance the timing in that area with similar to worst results. I also retarded the timing with same results also. Fuel is around 13.5AFR at that point. I'll make a log and post it up. Thanks for your help.

[crucian]

What map sensor and wideband are you using? Need to see your datalog.

[aaimada]

Omni 3 bar map sensor.

[aaimada]

What map sensor and wideband are you using? Need to see your datalog.

I have a omni 3 bar map sensor and a ngk afx wideband.
I retarded the ignition a little more and noticed it got better. Maybe it wants no advance at all at that low of rpm range.
Could you take a look at my current igintion table and see if anything looks way off?

[crucian]

Think your problem is that you're ignition timing is dipping into the negatives when you're trying to take off from below 2000. When you adjusted you ignition timing, you adjusted in the wrong area on the map. While taking off at below 2000rpm, your car is at 0 vacuum, -4 degree timing, and around 11AFRs. The type of cams you have are affecting the way the engine idles and operate. You have to tune it properly. I would also switch to a 4 bar map sensor so you don't have to put in a custom setting in the MAP sensor adjustments.

[aaimada]

Think your problem is that you're ignition timing is dipping into the negatives when you're trying to take off from below 2000. When you adjusted you ignition timing, you adjusted in the wrong area on the map. While taking off at below 2000rpm, your car is at 0 vacuum, -4 degree timing, and around 11AFRs. The type of cams you have are affecting the way the engine idles and operate. You have to tune it properly. I would also switch to a 4 bar map sensor so you don't have to put in a custom setting in the MAP sensor adjustments.

Would a omni 4 bar work? So far this map sensor has been reading same as my Defi gauge. Ill try and advance the timing and see how it does. I also have a jerking problem while at part throttle coming to a stop. Almost like dry humping the air. Possibly the cams are at fault also. I tried decreasing the load in the fuel cut off table.

[crucian]

You can continue to use the 3 bar if you would like. As long as it's reading right. You have to get your AFRs and timing correct in the areas that it needs to be. The reason I mentioned the cams is that they have a bigger "low speed" profile than a stock cam and it will take some time getting them tuned to drive almost like stock. End state is that the car really needs to be tuned properly by an on-site person giving it TLC.