Learning Curve 2.0 - ughh

[trlrider]

Evening all! Got my engines swapped out and everything seems to be working, except it is a slug. Not the power I am use to out of this engine when it was carburetor, and even weaker then the old worn out TBI that I pulled out.

This engine does have better cast iron heads (not vortec, yet), Holley Street Dominator intake, TBI adapter, and original TBI. The only oddity is Big Cap HEI with a divorced module ( module is mounted on the firewall.

Feels like a timing issue, but that should not be. Base timing is set at zero, and does not fluctuate (ESC wire disconnected) The old school in me wants to bump the timing, but I want to understand what the data is telling me first. Especially the knock counts and retard!

Knock counts are showing at 225 plus at idle, Knock retard is at 20 to 25% at idle! Why?
I do not hear any knock (per-detonation). The Knock sensor was pulled from the old engine and put in the new one in the same water jacket drain.

Data Acquisition with TunerProRT v5, I think I did it correct, but not sure. Reading the help files again, and again just to make sure.

Files attached: The one marked 1st Log was a short drive down the road and back, check engine light cam on which was a EGR Failure code (EGR is not hooked up and I have not deleted it in the tune yet)
2nd Log was a short look and see sitting in the driveway trying to figure out the knock count and knock retard at idle.
Maybe that sensor is bad, but it did not give me any grief in the old engine.

Original and Current PCM is a '8625, BLCP, $E6 mask. Nothing has been tweaked yet!

Note: The truck ran the same (weak) with a '7427, BJLH, $OD mask. For some reason that file did not save.

Thanks!

[dave w]

Gearhead-efi link for $E6 information: http://www.gearhead-efi.com/Fuel-Inj...Information-E6

Chip code BLCP is not listed in the above link.

It's possible a modified timing table will improve performance.

Timing tables pictures below.

dave w

Stoc Vortec L31Stock Vortec Timing Table.jpg

Stock TPI L98TPI Timing Table.jpg

Modified TBI L05Modified Timing Table.jpg

[trlrider]

Thanks Dave!
Studying how to do various things. And yes, that .bin does not show up anywhere.
I do have a '7427 with a BJLH (stock) .bin from a 1994 and the $OD mask.

Thinking about putting it in there and leaving it in there since the $OD mask seems more popular. < thoughts?

Will study you timing suggestions when at lunch today or when I get off work. Thank You!

[trlrider]

Also on the knock retard, I found where that the log may have been reading voltage and not actual retard. Changed that to read actual degree according to the .adx file I am using for the next time I try to log.

[dave w]

Link to a gearhead-efi thread with the 1998 Vortec timing table copy / pasted into an Excel Spreadsheet: http://www.gearhead-efi.com/Fuel-Inj...-Throttle-ONLY

Disclaimer . . . Informational use only

To much timing = not a good thing

Not enough timing = not a good thing

dave w

[trlrider]

Link to a gearhead-efi thread with the 1998 Vortec timing table copy / pasted into an Excel Spreadsheet: http://www.gearhead-efi.com/Fuel-Inj...-Throttle-ONLY

Disclaimer . . . Informational use only

To much timing = not a good thing

Not enough timing = not a good thing

dave w

Thanks Dave W for the bump in the correct direction.
Was studying this and working on a updated file to burn and found out my Burn2 was not working correctly.
1st would not erase the supplied chip, thus would not write the new file and confirm. Ughh!
Also noted that the two Memcals that I have for the 7427 $OD mask appear to not be reading correctly. The main spark vs. MAP vs. RPM were showing 79.8 degrees timing from 3200 rpm up, which I do not think would be correct based on downloads from this forum.
Also many scalars were maxed out on a unmolested .bin that should not have been such as EGR settings.

Have messaged Moates to see if there is a solution to my issue with the Burn2.
Meanwhile the Sub is in limbo until I can burn chips.

Thanks Dave W. for the help!