des90 Posted May 2, 2012 Share Posted May 2, 2012 Changed the blown engine for a nice low mileage 3.9 - transferred all the MS and Edis over and reworked all the fuel and ignition maps - runs lovely smooth and quiet. I decided to use it for work to check everything out - really pleased with it- pulls like a train thro all the gears - until I took it on the motorway- it just won't pull 5th gear over 3k revs and it struggles in 4th- everything looks totally normal on the laptop - the afr on wot is 12.5 to 13 and at 3k it's running about 34 degrees advance-WHAT AM I MISSING ?? Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted May 2, 2012 Share Posted May 2, 2012 Got a data-log? Quote Link to comment Share on other sites More sharing options...
V8 Freak Posted May 2, 2012 Share Posted May 2, 2012 Reset throttle calibration position in software? Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted May 3, 2012 Share Posted May 3, 2012 12.5 on wot sounds lean Quote Link to comment Share on other sites More sharing options...
des90 Posted May 3, 2012 Author Share Posted May 3, 2012 Got a data-log? I run MS on an old laptop i have and I have had no luck at all sending data logs to the forum-I was interested to see nige's comment that he thought 12.5 afr on wot is lean- what sort of figures do you think it should be? Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted May 3, 2012 Share Posted May 3, 2012 Send me a log via my email Wot can see the gauge go to near 0 -4 dependant on conditions But booting it 12.5 is not that far of stoc 14.7 The gauge is more a " guide" than gospel tho... What is your req fuel & post up your ve table Nige Quote Link to comment Share on other sites More sharing options...
des90 Posted May 3, 2012 Author Share Posted May 3, 2012 Reset throttle calibration position in software? I have reset all the sensors twice now-doesnt seem to be a problem with them- I,m running the injection system off the 5.0lre ie 4.6 system but i dont think theres any difference to a 3.9 apart from a larger plenum and the later idle valve Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted May 3, 2012 Share Posted May 3, 2012 Open megatune Right click on any gauge Select TPS - this will now show TPS as a temp gauge... Drive Keep an eye on the TPS gauge does it go as low as say 20 ish and up to - wot around 250-300 and everywhere in between ? Quote Link to comment Share on other sites More sharing options...
des90 Posted May 3, 2012 Author Share Posted May 3, 2012 Send me a log via my email Wot can see the gauge go to near 0 -4 dependant on conditions But booting it 12.5 is not that far of stoc 14.7 The gauge is more a " guide" than gospel tho... What is your req fuel & post up your ve table Nige req fuel is 18.1- 9.05ms -4squirts pe cycleve 59 59 59 60 64 64 64 66 67 69 77 80 84 85 85 85 59 59 59 60 64 64 64 65 67 67 76 79 84 85 85 85 58 58 58 59 61 63 63 65 65 65 76 82 85 85 85 85 54 54 56 56 58 62 62 62 64 68 78 80 83 83 83 83 52 54 54 54 57 60 60 62 65 66 77 80 82 83 83 83 51 52 52 52 55 60 60 60 61 65 71 76 79 80 80 80 46 48 50 51 53 55 55 57 58 62 70 70 76 76 76 76 46 47 48 49 51 53 54 56 61 62 69 69 73 73 73 73 44 45 47 48 51 53 53 54 56 62 67 68 72 73 73 73 39 42 47 48 49 52 52 52 56 58 62 68 71 73 73 73 38 38 45 45 47 51 51 51 54 56 63 67 70 72 73 73 37 37 40 42 43 44 44 44 51 54 60 62 69 70 70 70 35 35 36 39 40 40 42 42 43 45 48 53 57 60 65 67 33 33 34 35 36 36 36 38 40 43 49 52 57 59 61 65 32 32 34 34 36 36 36 38 38 40 46 48 50 50 50 50 33 33 36 37 37 38 38 38 40 40 43 47 49 49 49 50 Quote Link to comment Share on other sites More sharing options...
des90 Posted May 3, 2012 Author Share Posted May 3, 2012 Open megatune Right click on any gauge Select TPS - this will now show TPS as a temp gauge... Drive Keep an eye on the TPS gauge does it go as low as say 20 ish and up to - wot around 250-300 and everywhere in between ? I'v got tps gauge showing and all seems to be ok Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted May 3, 2012 Share Posted May 3, 2012 Hmmm Does seem a tad lean Try Upping Fuel Req to 20 + 10 and send me a log Nige Nige Quote Link to comment Share on other sites More sharing options...
des90 Posted May 3, 2012 Author Share Posted May 3, 2012 Hmmm Does seem a tad lean Try Upping Fuel Req to 20 + 10 and send me a log Nige Nige ok will log it tonite on the way home and have a bash at emailing it to you tomorrow-changed the req fuel and it ran harsh even after knocking down the ve table on idle Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted May 3, 2012 Share Posted May 3, 2012 Hmmm Are YOU 100% SURE you are spot on with the timing / VR sensor ? Nige Quote Link to comment Share on other sites More sharing options...
des90 Posted May 3, 2012 Author Share Posted May 3, 2012 Hmmm Are YOU 100% SURE you are spot on with the timing / VR sensor ? Nige Checked it with a timing light against the pulley marks that i know are spot on Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted May 3, 2012 Share Posted May 3, 2012 Is your lambda sensor actually a wideband one or are you just going on the uncalibrated guess that is the AFR gauge? Quote Link to comment Share on other sites More sharing options...
des90 Posted May 3, 2012 Author Share Posted May 3, 2012 Is your lambda sensor actually a wideband one or are you just going on the uncalibrated guess that is the AFR gauge? wideband lambda fitted Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted May 3, 2012 Share Posted May 3, 2012 Have you placed all the req'd WB settings for the model you have into the MS ECU ? Quote Link to comment Share on other sites More sharing options...
bobtail84 Posted May 3, 2012 Share Posted May 3, 2012 I know nothing... But are you getting a good map reading? If the pipe is restricted for the MAP sensor, you will struggle at full throttle and not enough advance at WOT. Cheesy Derik Quote Link to comment Share on other sites More sharing options...
AncientGeek Posted May 4, 2012 Share Posted May 4, 2012 Looks exceptionally lean 70Kpa - WOT. Are the injectors standard? At that AFR and 34 degrees at sea level I would be very surprised if its not pinking. What make WB? Measure the voltage directly off the WB and make sure MS is reading the same. Quote Link to comment Share on other sites More sharing options...
des90 Posted May 4, 2012 Author Share Posted May 4, 2012 Fixed ! I think it is something to with having a safari snorkel on- at low speeds it has no effect but at high speeds it rams air in and weakens the fuel - - I disconnected it from the air filter housing and the prob disappeared- so richened up the wot ve and that seems to have sorted it- it just means that at lower speeds its really is rich at wot Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted May 4, 2012 Share Posted May 4, 2012 Do you mean you're seeing MAP's over 100? You could always add an extra row to the top of the VE table for the "high speed" MAP readings so it goes richer. Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted May 4, 2012 Share Posted May 4, 2012 Ah Ha Yep, too small a snorkel will reduce the air flow and cuase starvation big time Many took the mickey out of me when I made my snorkel, it was after a call to J Eales re bore size that I gulped. Disconnect and relog, you may well find the VE retunes itself with full air flow Nige Quote Link to comment Share on other sites More sharing options...
des90 Posted May 4, 2012 Author Share Posted May 4, 2012 Do you mean you're seeing MAP's over 100? You could always add an extra row to the top of the VE table for the "high speed" MAP readings so it goes richer. Funny you sould say that the reading on the ve table will get to wot with just half throtle- Iv been wondering about that- is it something to do with this snorkle??? Quote Link to comment Share on other sites More sharing options...
des90 Posted May 4, 2012 Author Share Posted May 4, 2012 Ah Ha Yep, too small a snorkel will reduce the air flow and cuase starvation big time Many took the mickey out of me when I made my snorkel, it was after a call to J Eales re bore size that I gulped. Disconnect and relog, you may well find the VE retunes itself with full air flow Nige So what bore snorkel did you end up with Nige? Quote Link to comment Share on other sites More sharing options...
fozsug Posted May 4, 2012 Share Posted May 4, 2012 Ah Ha Yep, too small a snorkel will reduce the air flow and cuase starvation big time Many took the mickey out of me when I made my snorkel, it was after a call to J Eales re bore size that I gulped. Disconnect and relog, you may well find the VE retunes itself with full air flow Nige Surley if its running lean its getting too much air , so the snorkle is working too well? Quote Link to comment Share on other sites More sharing options...
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