Re: SSS's V8 swap project ... NOT just another bubble! (anymore)
Posted: Sun Jan 13, 2013 2:51 pm
update:
tune/closed loop: ok ... finally figured out how to re enable the settings to be able to switch to closed loop!
... PO did a tuning at some place to run without ANY O2 sensors and disabling quite some features ... obviously because the tuner wanted to simplify his tuning job.
but still ... my upstream O2 sensors seem not to get hot enough to allow the pcm to switch to closed loop as early as possible ... it takes quite some "heating all up". Considering grabbing some Bosch 13111 sensors which come with a stronger heater (Corvette downstream sensors) and use those upstream.
tune/auto shifting: tweaked the torque management and the line pressures slightly to allow for firmer shifts with less clutch slippages ... especially 3->4 part throttle was awfully slow ...
and tweaked the WOT shifting rpms in such a way that I can intentionally hold a gear up till cut off at WOT. (it up shifts if I release the throttle slightly below the WOT TPS position ... or do not go WOT at all)
... and I can hold 3 a bit longer than before ... yesss
tune/fan control: lowered ON/OFF thresholds to match my newly installed 160*F Thermostat ... BEFORE my engine was running at 200-210 with 220 peaks depending on load and traffic/offroad ... NOW even with added powersteering and additional transmission cooler both in front of the condenser I was running MAX 200 OFF road ! In city driving I am usually at 190-198 ! (with A/C city driving!)
did some upgrades regarding transmission cooling:
1. my transmission temp gauge was mistakenly mounted to the wrong "colder" line ... discovered that after I started using the Scangauge to read the transmission temp from the PCM (WTF ... offroad 220-230!?)... they were like 50-70*F higher than my external gauge ... now corrected! (but the B&M gauge is still not really accurate and does not show close to PCM readings ... eff it)
2. Hayden 676 cooler in the grill in front of the condenser ... ADDITIONALLY to my under the tub mounted Derale 13960!
NOW ... and with PCM readings the transmission temps stay when warmed up between 160-180*F ... EVEN OFFROAD while DUNE BASHING FOR HOURS ... YEESSS ... (maybe my modified shift tables are contributing to this result as well)
FINALLY took the chance to do something for my powersteering oil temps:
Had ordered for this a second Hayden 676 ... and mounted it bolt together with the additional tranny cooler as one wide unit directly in front of the A/C condeser.
Could not reproduce the fading effects of a overheated powersteering anymore. And last trip on Friday was not a walk in the park ...
I like the new Hayden 676s A LOT ... great quality, RIGHT DIMESIONS TO FIT together into the grill, cheap!
I hope I have hereby ironed out all so far identified weaknesses ... will do some electrical wiring clean up (old jeep harness, aux led light wires, new LED tail lamps, flasher relay, 4-3 wire conversion of my Euro tail lamps ... etc etc) NEXT
btw ... google and summitracing are your friends for parts pics ... will see if I can take good pics of the coolers mounted ... won't be easy, since I have a grill mesh as well
LIWA and DesNAV : sluggy is coming (with SSS)
tune/closed loop: ok ... finally figured out how to re enable the settings to be able to switch to closed loop!
... PO did a tuning at some place to run without ANY O2 sensors and disabling quite some features ... obviously because the tuner wanted to simplify his tuning job.
but still ... my upstream O2 sensors seem not to get hot enough to allow the pcm to switch to closed loop as early as possible ... it takes quite some "heating all up". Considering grabbing some Bosch 13111 sensors which come with a stronger heater (Corvette downstream sensors) and use those upstream.
tune/auto shifting: tweaked the torque management and the line pressures slightly to allow for firmer shifts with less clutch slippages ... especially 3->4 part throttle was awfully slow ...
and tweaked the WOT shifting rpms in such a way that I can intentionally hold a gear up till cut off at WOT. (it up shifts if I release the throttle slightly below the WOT TPS position ... or do not go WOT at all)
... and I can hold 3 a bit longer than before ... yesss
tune/fan control: lowered ON/OFF thresholds to match my newly installed 160*F Thermostat ... BEFORE my engine was running at 200-210 with 220 peaks depending on load and traffic/offroad ... NOW even with added powersteering and additional transmission cooler both in front of the condenser I was running MAX 200 OFF road ! In city driving I am usually at 190-198 ! (with A/C city driving!)
did some upgrades regarding transmission cooling:
1. my transmission temp gauge was mistakenly mounted to the wrong "colder" line ... discovered that after I started using the Scangauge to read the transmission temp from the PCM (WTF ... offroad 220-230!?)... they were like 50-70*F higher than my external gauge ... now corrected! (but the B&M gauge is still not really accurate and does not show close to PCM readings ... eff it)
2. Hayden 676 cooler in the grill in front of the condenser ... ADDITIONALLY to my under the tub mounted Derale 13960!
NOW ... and with PCM readings the transmission temps stay when warmed up between 160-180*F ... EVEN OFFROAD while DUNE BASHING FOR HOURS ... YEESSS ... (maybe my modified shift tables are contributing to this result as well)
FINALLY took the chance to do something for my powersteering oil temps:
Had ordered for this a second Hayden 676 ... and mounted it bolt together with the additional tranny cooler as one wide unit directly in front of the A/C condeser.
Could not reproduce the fading effects of a overheated powersteering anymore. And last trip on Friday was not a walk in the park ...
I like the new Hayden 676s A LOT ... great quality, RIGHT DIMESIONS TO FIT together into the grill, cheap!
I hope I have hereby ironed out all so far identified weaknesses ... will do some electrical wiring clean up (old jeep harness, aux led light wires, new LED tail lamps, flasher relay, 4-3 wire conversion of my Euro tail lamps ... etc etc) NEXT
btw ... google and summitracing are your friends for parts pics ... will see if I can take good pics of the coolers mounted ... won't be easy, since I have a grill mesh as well
LIWA and DesNAV : sluggy is coming (with SSS)