ECMlink Lean at 3500. I'm puzzled.

[sillylepricon37]

Wow.
Ignition timing = the advance or retard of the timing of the spark plug firing with respect to Top Dead Center position of the piston.

Thanks I appreciate it. Does this have anything to do with it going lean.

 

[Boosted98gsx]

Thanks I appreciate it. Does this have anything to do with it going lean.

No. It more than likely does not.

 

[sillylepricon37]

A car has to have 3 things to function, Air, Fuel, and Ignition.

The mechanical movement of an engine brings in the air, the carb / ecu controls the fuel, and ignition is probably the most important power maker of them all.

With relation to the stroke of the crankshaft, you time the ignition of the air / fuel ratio to detonate the a/f mixture so that you get peak cylinder pressure at the top of the compression stroke, resulting in the maximum downward force on the piston and the most torque.

This "timing" of ignition is based on when the spark happens with relation to the position of the crankshaft.

This explained it very good.

No. It more than likely does not.

If it was you. What would you check?

 

[Boosted98gsx]

Your LTFT's and STFT's.

 

[sillylepricon37]

Your LTFT's and STFT's.

Is this the Fuel Sliders? I mean i was trying to read the forum on ecmlink.com and its kind of hard to understand for instance the LTFT Select. I know on mine and a stock 2g its 1594/1594 but its saying hi is suppose to be blah blah blah and low is suppose to be blah blah blah. Well I fixed that. Where do you mess with your fuel trims at?

 

[Boosted98gsx]

Sorry, I do not have the time nor the patience to explain these two fundamental core essentials to DSMlink. Search the forums.

 

[delta448]

The fuel trims are the ECU's way of correcting it's own fuel delivery mistakes. It's not something you directly control, but something that you watch to see how any changes have affected the closed loop fuel delivery. The ECU monitors the front O2 sensor voltage signal to determine richness or leaness relative to a target of 14.7 AFR. The Short Term Fuel Trim value is like an ECU multiplier varaible used in order for the ECU to keep AFR around stoichiometric. The Long Term Fuel Trims (of which there are three; low, mid, high) are the like the cumulative trends in the movement of STFT. Logging LTFTs will show you if the ECU has been forced to make a large change to the fuel delivery tables in order to keep closed loop operation at the right AFR.

I don't like spoonfeeding either. If you don't have the patience to stick with something long enough to do it right, don't do it. If you don't know what ignition timing is and don't understand fuel trims, you have no business modifying your car in any way, shape or form. Read up on ECMLink's wiki ...that, or take it to a shop, get it correctly tuned and then don't ever touch anything on it again.

 

[sillylepricon37]

To be honest. I don't think its the fuel trims. It worked for 3 months perfectly fine. And all of a sudden it just started all of a sudden not getting fuel at higher rpms. If I'm only on 10lbs, at WOT with so much fuel added, it should NOT do this. It's something not in the tuning. I was running 14lbs and my fuel sliders were an average of -28 give or take. I turn it up to 25(correcting the sliders) and then down to 10 with MORE fuel and it goes lean.. Awesome.

 

[Boosted98gsx]

I am officially done with this thread.

 

[sillylepricon37]

I am officially done with this thread.

Lol, once i figure out what the problem is would you like to know?

 

[Cmele89]

Ive seen cylinder heads warped doing this same problem throwing check engine lights, I didnt really read all the posts because i hate reading but What changes have you done to your car since the problem started

 

[sillylepricon37]

Ive seen cylinder heads warped doing this same problem throwing check engine lights, I didnt really read all the posts because i hate reading but What changes have you done to your car since the problem started

Fuel Filter, Spark Plugs. I haven't thrown a check engine light.

 

[sillylepricon37]

247whp and 242 ft/lbs of torque at 15psi.......hows this sound? the tune is a lil richhh. and tell me what you guys think about my timing issue.

We had to set the timing sliders at 15 and went into the timing maps to increase the timing some more just to get it to make power.


My Wideband was broke.


When i hit 6300rpms it falls flat on its face.... weird. I have the rev limit set at 7500 but it still falls flat at 6300 I have 0 knock.

The guy said if he sets boost at 20psi it flutters and drops down and handles a constant 15psi

What yall think

Logg