MY k10 with 350 tbi 700r4 342s and 33s shutters when in overdrive lock up at interstate speeds, lower speeds it isnt noticeable. It has happened since i bought it so far new dist. cap, rotor, coil, plugs, fuel pump, delco O2. I just changed the fp reg spring to one that had more pressure and turned in a screw for good measure (adapter and gauge in route) anyone care to decipher the log I recorded after reinstalling the new spring?
One of your early posts stated that you are planning on doing some modifications to this truck. Currently, is it stock? The reason I ask, is the tune seems to be messed up at highway speeds. The BLM’s are really high (150). It might even be maxed out, where the BLM cant go higher then 150. On a perfect tune they should be around 128 (+/- 5). Your trucks block learn (BLM) is adding fuel adding fuel to compensate for a lean condition. Another strange thing I noticed, was the O2 sensor is swinging around 300 mV. Usually, it swings around 450mv. Yours is swinging to the lean side of stoich. In my opinion your shutter is from a lean fuel mixture. Can you post your bin?
Last edited by mmigacz; 12-31-2016 at 04:14 PM.
1986 ski centurion boat, 351W, gt40P heads, edelbrock performer rpm, 1227747 ecm, 72 lb/hr injectors (@18 PSI fuel pressure), .490/.490 lift, intake 278 duration, exhuast 282 duration, 112 lobe separation
1969 camaro, 355ci, performer RPM intake, camel hump heads, 1227747 ecm, 454 throttle body (@18 PSI fuel pressure),
2016 Chevy Cruz
2014 Chevy Silverado
Far as I know it's stock with no cat and true duals. I have seen the BLM up to 174 and is why I attempted to increase fuel pressure. I'll add the bin when I get to my PC.Originally Posted by mmigacz
Do you have the capability to change your tune yet? Chip burner or emulator? I have found that increasing fuel pressure does not richen the mixture up by large amounts. It does make it richer, but seems to have more an effect at high RPM's with high loads (when pressure might fall off).
Last edited by mmigacz; 12-31-2016 at 05:07 PM.
1986 ski centurion boat, 351W, gt40P heads, edelbrock performer rpm, 1227747 ecm, 72 lb/hr injectors (@18 PSI fuel pressure), .490/.490 lift, intake 278 duration, exhuast 282 duration, 112 lobe separation
1969 camaro, 355ci, performer RPM intake, camel hump heads, 1227747 ecm, 454 throttle body (@18 PSI fuel pressure),
2016 Chevy Cruz
2014 Chevy Silverado
I do not.
How do you know the ASDU2 bin file you posted, is installed in your chip? Usually, you need a chip reader/burner to extract the bin file. Chips can be modified and re-burnt.
1986 ski centurion boat, 351W, gt40P heads, edelbrock performer rpm, 1227747 ecm, 72 lb/hr injectors (@18 PSI fuel pressure), .490/.490 lift, intake 278 duration, exhuast 282 duration, 112 lobe separation
1969 camaro, 355ci, performer RPM intake, camel hump heads, 1227747 ecm, 454 throttle body (@18 PSI fuel pressure),
2016 Chevy Cruz
2014 Chevy Silverado
I dont, I used it because I read on here it is the best to use. The ecm appears to be a reman replacement as there is nothing on the case identifying the Mask.
Here is my advise.. Determine if the ecm has the chip adapter that allows it to use a 27SF512 chip. If it does, buy a chip burner (moates has them for $85)... After getting the burner/reader, download the actual bin file from your chip. You will need this when you do your vortec modifications. If you don't have the 27SF512 adapter (or don't know what I am referring to). post your answer and I can get you different directions.
Last edited by mmigacz; 01-02-2017 at 03:47 PM.
1986 ski centurion boat, 351W, gt40P heads, edelbrock performer rpm, 1227747 ecm, 72 lb/hr injectors (@18 PSI fuel pressure), .490/.490 lift, intake 278 duration, exhuast 282 duration, 112 lobe separation
1969 camaro, 355ci, performer RPM intake, camel hump heads, 1227747 ecm, 454 throttle body (@18 PSI fuel pressure),
2016 Chevy Cruz
2014 Chevy Silverado
is that the 28 to 24 pin conversion?
Yes it is. Just to be clear is converts 24 to 28 pin.
Last edited by mmigacz; 12-31-2016 at 06:34 PM.
1986 ski centurion boat, 351W, gt40P heads, edelbrock performer rpm, 1227747 ecm, 72 lb/hr injectors (@18 PSI fuel pressure), .490/.490 lift, intake 278 duration, exhuast 282 duration, 112 lobe separation
1969 camaro, 355ci, performer RPM intake, camel hump heads, 1227747 ecm, 454 throttle body (@18 PSI fuel pressure),
2016 Chevy Cruz
2014 Chevy Silverado
close enough, chip says AMUR 0055 on it and its 24 pin
Oh I have also put a cap on the vacuum port for egr/air and disconnected the electrical connector.
If your not afraid of soldering a chip adapter into the circuit board, you can buy the 27SF512 adapter (G2 memory adapter) for $30 from moates. For another 8$ you can buy a 28 pin zif socket for easy chip removal. Moates has a tutorial on how to remove the 24 pin chip holder and how to solder the 24 to 28 pin adapter. (http://support.moates.net/g2-adapter...)....Otherwise buying a new ECM with the chip adapter already installed in an option.
1986 ski centurion boat, 351W, gt40P heads, edelbrock performer rpm, 1227747 ecm, 72 lb/hr injectors (@18 PSI fuel pressure), .490/.490 lift, intake 278 duration, exhuast 282 duration, 112 lobe separation
1969 camaro, 355ci, performer RPM intake, camel hump heads, 1227747 ecm, 454 throttle body (@18 PSI fuel pressure),
2016 Chevy Cruz
2014 Chevy Silverado
I'm not sure if that method of disabling the EGR is good or not. I don't use the EGR in my boat or Camaro. However, I disabled the EGR thru my tune.
1986 ski centurion boat, 351W, gt40P heads, edelbrock performer rpm, 1227747 ecm, 72 lb/hr injectors (@18 PSI fuel pressure), .490/.490 lift, intake 278 duration, exhuast 282 duration, 112 lobe separation
1969 camaro, 355ci, performer RPM intake, camel hump heads, 1227747 ecm, 454 throttle body (@18 PSI fuel pressure),
2016 Chevy Cruz
2014 Chevy Silverado
its the only option I have to try and figure out what the problem is.
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