Starting new thread as I started to work on the tune for 350 with 290H-R12(Duration at 050 inch Lift: 230 int./244 exh.). Also has 1.6 rockers, dart 165cc heads, and stealth ram with 24lb injectors.
Hypertech 87 chip could barely let it start and would not idle at all. Only moving the throttle could I keep it running.
Switched to arap bin and made some changes. Enriched the start up, took the timing down some, set idle rpm and added %10 to first maf table. Also seem to help setting injector constant to 27. It is now starting better, and can even let it somewhat idle by holding throttle down some. Have never got to close loop yet. I believe it needs to add some fuel in open loop but after reading many threads not sure what is the best way to add fuel at idle situation in open loop. Looking for some pointers or maybe even bins to compare too.
Appreciate any help.
Hypertech 87 chip could barely let it start and would not idle at all. Only moving the throttle could I keep it running.
Switched to arap bin and made some changes. Enriched the start up, took the timing down some, set idle rpm and added %10 to first maf table. Also seem to help setting injector constant to 27. It is now starting better, and can even let it somewhat idle by holding throttle down some. Have never got to close loop yet. I believe it needs to add some fuel in open loop but after reading many threads not sure what is the best way to add fuel at idle situation in open loop. Looking for some pointers or maybe even bins to compare too.
Appreciate any help.
Moderator
Start with the 165 section of this thread:
https://www.thirdgen.org/forums/diy-...uide-book.html
RBob.
https://www.thirdgen.org/forums/diy-...uide-book.html
Quote:
...or maybe even bins to compare too.
No BIN begging is allowed......or maybe even bins to compare too.
RBob.
Trying to verify which table most used for open loop enrichment and how much value changes effect it.
Open loop vs lv8
if its globally down on fuel cold starting with cold coolant then open loop vs coolant can also help. Also helps if down on fuel at every temp
leave it open loop until its running right for fuel there before goin closed
if its globally down on fuel cold starting with cold coolant then open loop vs coolant can also help. Also helps if down on fuel at every temp
leave it open loop until its running right for fuel there before goin closed
Got it good enough to get to more experienced person. Main issue was a vacuum leak, but I had to program enough fuel for it to run with the vacuum leak in order to actually find it. Didn't have anybody available in trying to make it run while chasing the leak. After that trimmed fuel back, raised idle, evened out timing until 1k rpm and it ran pretty decent.