Its got too much timing. Its not just fuel i would be working on. It needs an appropriate timing table to get fuelling setup right.
Type: Posts; User: oztrack
Its got too much timing. Its not just fuel i would be working on. It needs an appropriate timing table to get fuelling setup right.
Some research i did showed a knock frequency of around 5.5Khz for any LS1 or LS2. Its purely bore dependent.
So they will pick up MOST knock. But as we all know they dont pick up all knock.
...
It has been quoted on another car forum that once LS1 engines are modded in any signicant way eg cammed /exhaust / stroked etc,the knock sensor settings have will not be reliable since the engine...
I just spent some time on a dyno and found that with my car
(ls1 mafless otrcai 216 220 114lsa 1.8 rockers 555 lift ported heads 10.7:1) that it responded well to more timing - leaning out more than...
Tuning to about 14.0:1 with 28 deg timing gave me down below 45 kpa map and a nice idle. RAF on the high side also resolved coming to a stop issues.
they seem to idle better with cams at 14.0:1 better than at near 15.0:1
Thats awesome. I hadnt considered being that extreme - i bet it would save alot of fuel !
Can anyone confirm that there are no engine damage issues having it use DFCO more. I guess hardlu any fuel...
I want to maximize the use of DFCO - it saves fuel and makes a big difference in this area. Has anyone enabled it so that it works for longer when we are off the throttle.
What are everyones ideas on improving fuel economy?
What is the best strategy for timing and afrs?? particularly in cruise cells such as
1600 35-40-45map
2000 35-40-45 map
2400 35-40 -45 map
...
Yes I have a wideband.
If the offsets are wrong - the injector pulse may be firing for not long enough. So it will richen it up - but maybe supply more consistent fueling at low rpm and when...
I have created a new set of values for between 11.5V and 14.5V based on the Ford injector offsets (volts vs pressure for delay in opening the injector in milliseconds)
I havent tried them yet -...
It learns its way back - there is no set fuel value.
If you reset the pcm it will start from the top though.
Has anyone tried the values given by Chris Bs spreadsheet for SVO 30s. I found it at http://ls1edit.slowcar.net/injectoroffset.xls
I have put in my stock values and have the converted values...