View Poll Results: Which PCM for LS SWAP
99-2002 Stock Cable driven PCM
8
34.78%
Holley HP
13
56.52%
Other Explain
2
8.70%
Voters: 23. You may not vote on this poll
Holley HP VS Stock PCM
09-19-2017, 01:42 PM
#21
For those saying you don't NEED the Holley, they are right. However, it is extremely nice system and if you can justify the expense, do what YOU want to do. Ive ran 411 for many years and tuned stock ecus and Holley EFI systems, and for what I want to do with my car, I chose Holley EFI.
09-19-2017, 02:31 PM
#22
TECH Apprentice
For those saying you don't NEED the Holley, they are right. However, it is extremely nice system and if you can justify the expense, do what YOU want to do. Ive ran 411 for many years and tuned stock ecus and Holley EFI systems, and for what I want to do with my car, I chose Holley EFI.
09-19-2017, 02:50 PM
#23
All my injector data is accurate and all my ve and maf tables are dead on with the wideband. I couldn't believe how the new injectors were so far off ve and maf wise compared to the old ones.The new ones were 20% lean compared to the old ones everywhere even WOT but at wot they are only at 60% duty cycle. I am guessing it has to do with the battery offset differences.
09-19-2017, 06:25 PM
#24
You could piggyback the stock ECU to run the gauges. Aside from that, I don't know of a good way to keep all of the gauges. I personally went with the 7" Holley touchscreen. It is pricey but it is worth it in my opinion.
09-20-2017, 12:40 PM
#25
TECH Addict
Thread Starter
Data for the 8.1 injectors were from a gm truck tune. The new Deatschwerk injector data is right from them so i can't see how i have the wrong data. When i went from stock LM7 injectors to the 8.1 injectors i didn't have to change the ve or maf.
09-25-2017, 07:06 AM
#27
TECH Addict
Thread Starter
I guess that is possible but they swear they have tested there data. There injectors are different then stock where stock has 2 holes and DW has 4 holes. When i got the tune dialed in with there data it ran smoother than the stock injectors. Of course a month after the injector install one went bad and leaked enough so cylinder one wouldn't fire at idle. Everything i have read on DW injectors have been positive.