Azza27 Posted March 7, 2020 Report Share Posted March 7, 2020 I am looking at a g4 extreme onto a ls3 in a jetboat. Do i need to run 2 co2 sensors? Each bank of the engine has its own exhaust ie: 2 exhausts not connected together at any point Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 7, 2020 Report Share Posted March 7, 2020 Most of the modern injected V8's using a factory intake manifold are reasonably well balanced from side to side so dual Lambdas are not necessarily required especially if it is a relatively mild engine. If it is a highly stressed engine then it would be worth considering. Also you dont necessarily need Lambdas fitted permanently - you tuner may just screw his own in while tuning and remove when done. Note if it has a wet exhaust system you cant run lambdas at all. You either have to change to dry exhausts for tuning or use some other method such as a 4 gas analyser. Quote Link to comment Share on other sites More sharing options...
Azza27 Posted March 7, 2020 Author Report Share Posted March 7, 2020 Ok thanks adamw.. any other things i should be aware of when it comes to ls3 and a g4 extreme Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 8, 2020 Report Share Posted March 8, 2020 10 hours ago, Azza27 said: Ok thanks adamw.. any other things i should be aware of when it comes to ls3 and a g4 extreme I dont think so, an Xtreme would be a good fit for one of these. Be aware it is not waterproof so it will want to be put in an enclosure or similar. Quote Link to comment Share on other sites More sharing options...
Azza27 Posted March 8, 2020 Author Report Share Posted March 8, 2020 Yes i agree. I have done a few jet boats in the past however this is the first factory LS engine. I usually put the ecu, the map and lambda controller in a click clack type lunch box mounted vertically with a few small drain holes in the bottom. So far i havnt had any ecu temp problems doing it this way Quote Link to comment Share on other sites More sharing options...
Azza27 Posted May 6, 2020 Author Report Share Posted May 6, 2020 Does anybody have a coil wiring diagram for L98 coils. The coil plug has 8 pins Quote Link to comment Share on other sites More sharing options...
Adamw Posted May 6, 2020 Report Share Posted May 6, 2020 2 hours ago, Azza27 said: Does anybody have a coil wiring diagram for L98 coils. The coil plug has 8 pins Do you have a photo? If I google "L98 coil" all results show just the common 4 pin LS2 coil Quote Link to comment Share on other sites More sharing options...
Azza27 Posted May 6, 2020 Author Report Share Posted May 6, 2020 49 minutes ago, Adamw said: Do you have a photo? If I google "L98 coil" all results show just the common 4 pin LS2 coil Each coil has 4 wires going into it. The plug has 7 wires sorry not 8 Quote Link to comment Share on other sites More sharing options...
Adamw Posted May 6, 2020 Report Share Posted May 6, 2020 Oh ok now I get it. I would have called this the coil sub harness. A is the main power ground (ground to cyl head) E is ECU sensor ground. H is +12V supply. The rest are the trigger signals. Quote Link to comment Share on other sites More sharing options...
Azza27 Posted May 6, 2020 Author Report Share Posted May 6, 2020 16 minutes ago, Adamw said: Oh ok now I get it. I would have called this the coil sub harness. A is the main power ground (ground to cyl head) E is ECU sensor ground. H is +12V supply. The rest are the trigger signals. Ah yes i get it to now.... all the diagrams ive been looking at are of the coil plug itself. Thanks for the help and the fast reply too. Any idea of the dwell setting for these Quote Link to comment Share on other sites More sharing options...
Azza27 Posted May 16, 2020 Author Report Share Posted May 16, 2020 How do i get a negative number in trigger offset. When set to zero i have to much advance Quote Link to comment Share on other sites More sharing options...
Adamw Posted May 17, 2020 Report Share Posted May 17, 2020 The offset can be anything between -360 and +360 Quote Link to comment Share on other sites More sharing options...
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