Chris Bailey Posted November 20, 2012 Share Posted November 20, 2012 Wondering if you guys can help! Ever since dad went single turbo we have had a very annoying missfire that only occurs when the overdrive is on, The missfire happens at 1.5 bar and Ryan mapped the car at a safe 1.2/1.3 bar. Ryan reckons it was the spark plugs, So dad swapped the grade 7's to grade 8's it made the car feel better but still didnt cure the missfire. Now since then we attended another dyno day at Dynodaze on the 12/11/12, I noticed that the supra didnt missfire at all and they run the car in Manual mode,3rd gear overdrive off. Before people ask the coil pack clips were checked at dynodaze by some people from the forum and all seemed okay. Now its got me thinking could it be the injectors? Ryan had said that they are at 90% duty cycle so could this be the issue? Hope you guys can understand what im trying to get at . Any feedback and advice would be greatly appreciated as always Cheers! Quote Link to comment Share on other sites More sharing options...
Guest Budz86 Posted November 20, 2012 Share Posted November 20, 2012 Injectors sounds like the next logical step mate, unless it's worth asking Ryan if he can tweak the map with the grade 8's in? Quote Link to comment Share on other sites More sharing options...
Josh42 Posted November 20, 2012 Share Posted November 20, 2012 As a general rule Injectors should run at 80% duty cycle so maybe this is your problem? Quote Link to comment Share on other sites More sharing options...
Sheefa Posted November 20, 2012 Share Posted November 20, 2012 Were the injectors new or second hand and most importantly were they flow tested? Even new injectors should undergo a flow test ideally, I remember Mr Wilson always said that. I suppose the thing is if it was an injector misfire or uneven spray pattern surely Ryan would of been able to detect this during the mapping by monitoring each cylinder? Quote Link to comment Share on other sites More sharing options...
Chris Bailey Posted November 20, 2012 Author Share Posted November 20, 2012 Thank guys! Dad was thinking off changing the injectors in spring next year to either 850cc drop ins or going 1000cc with top feed fuel rail - - - Updated - - - Were the injectors new or second hand and most importantly were they flow tested? Even new injectors should undergo a flow test ideally, I remember Mr Wilson always said that. I suppose the thing is if it was an injector misfire or uneven spray pattern surely Ryan would of been able to detect this during the mapping by monitoring each cylinder? All the parts were second hand from Paul Whiffin - Not sure if they were tested. Quote Link to comment Share on other sites More sharing options...
letmeshowyou Posted November 20, 2012 Share Posted November 20, 2012 Paul will know. Have you asked him? Quote Link to comment Share on other sites More sharing options...
Chris Bailey Posted November 20, 2012 Author Share Posted November 20, 2012 Paul will know. Have you asked him? Spoke to him on facebook - He said it could be the traction, But dad has tried that and it still missfires. Youve heard the missfire it horrid lol Quote Link to comment Share on other sites More sharing options...
tooquicktostop Posted November 20, 2012 Share Posted November 20, 2012 Am I missing something because you say Ryan mapped to a safe 1.2-1.3 bar and this happens at 1.5 bar, why are you running 1.5 bar without a "safe" map Quote Link to comment Share on other sites More sharing options...
letmeshowyou Posted November 20, 2012 Share Posted November 20, 2012 He said it could be the traction A traction misfire?? What exactly is that?! Quote Link to comment Share on other sites More sharing options...
Chris Bailey Posted November 20, 2012 Author Share Posted November 20, 2012 Am I missing something because you say Ryan mapped to a safe 1.2-1.3 bar and this happens at 1.5 bar, why are you running 1.5 bar without a "safe" map You know what im like! I can never remember the full story. Im sure Ryan has set the car up correctly Quote Link to comment Share on other sites More sharing options...
Kaan W Posted November 20, 2012 Share Posted November 20, 2012 Am I missing something because you say Ryan mapped to a safe 1.2-1.3 bar and this happens at 1.5 bar, why are you running 1.5 bar without a "safe" map +1 Why? Mine misfires when traction is lost, only when set to a traction setting tho of course... Quote Link to comment Share on other sites More sharing options...
Chris Bailey Posted November 20, 2012 Author Share Posted November 20, 2012 A traction misfire?? What exactly is that?! Dont know you tell me Quote Link to comment Share on other sites More sharing options...
Kaan W Posted November 20, 2012 Share Posted November 20, 2012 A traction misfire?? What exactly is that?! Is when the syvecs cuts spark to reduce power thus more traction. I think. Quote Link to comment Share on other sites More sharing options...
Chris Bailey Posted November 20, 2012 Author Share Posted November 20, 2012 Im sure the problem will get sorted once the injectors have been changed and the fuel pump etc. Once there done i suppose it will go for another mapping session in the spring The car wont get used much now due to weather. Quote Link to comment Share on other sites More sharing options...
tooquicktostop Posted November 20, 2012 Share Posted November 20, 2012 Have you got Syvecs traction control ? Quote Link to comment Share on other sites More sharing options...
tkddav3 Posted November 20, 2012 Share Posted November 20, 2012 mine does the same when traction is on, thats how the syvecs works iir, when it senses loss of traction (in the settings with it on) it cuts the spark. hence i had to tell the guy what setting to put it in thats why i never use it not a clue what yours could be though buddddy Quote Link to comment Share on other sites More sharing options...
Chris Bailey Posted November 20, 2012 Author Share Posted November 20, 2012 Have you got Syvecs traction control ? No not at the moment its just the Syvecs S6 ECU - A HKS FCON Pro come with the kit from Paul but Ryan didnt have the version 3.3 software to map that ecu, So Ryan had a nearly new Syvecs he fitted, Its going back to Ryan in the spring to have the traction and launch control fitted. Quote Link to comment Share on other sites More sharing options...
tooquicktostop Posted November 20, 2012 Share Posted November 20, 2012 Do you get the red triangle on misfire! I would get Ryan to look at the logs to see what's up Quote Link to comment Share on other sites More sharing options...
Chris Bailey Posted November 20, 2012 Author Share Posted November 20, 2012 Do you get the red triangle on misfire Cant say ive ever noticed that - I would off seen it because I enjoy watching the speedo go round Quote Link to comment Share on other sites More sharing options...
Kaan W Posted November 20, 2012 Share Posted November 20, 2012 No not at the moment its just the Syvecs S6 ECU - A HKS FCON Pro come with the kit from Paul but Ryan didnt have the version 3.3 software to map that ecu, So Ryan had a nearly new Syvecs he fitted, Its going back to Ryan in the spring to have the traction and launch control fitted. How does launch control work with an auto? I have always wondered this cause wanted it on mine but thought it was for manuals only Quote Link to comment Share on other sites More sharing options...
letmeshowyou Posted November 20, 2012 Share Posted November 20, 2012 No triangle that I remember. I say live with it Chris; I'm half way through my complex fuel gathering device to strap to the front of my car to reclaim all that you send out the back. Should be ready in time for BW. Quote Link to comment Share on other sites More sharing options...
Chris Bailey Posted November 20, 2012 Author Share Posted November 20, 2012 How does launch control work with an auto? I have always wondered this cause wanted it on mine but thought it was for manuals only According to my dad Ryan said you can do high rev launches! Doubt it does the gearbox any good but sounds like good fun!!! Quote Link to comment Share on other sites More sharing options...
Chris Bailey Posted November 20, 2012 Author Share Posted November 20, 2012 No triangle that I remember. I say live with it Chris; I'm half way through my complex fuel gathering device to strap to the front of my car to reclaim all that you send out the back. Should be ready in time for BW. Yeah forgot to mention that! A nice load of black soot comes out of the exhaust sometimes when on boost! Quote Link to comment Share on other sites More sharing options...
Bailey. Posted November 20, 2012 Share Posted November 20, 2012 How about coil packs, when I had my single mapped it missed at 1.5bar so Ryan turned boost back to 1.3 bar and it was fine. With new new coil packs it's now mapped to 1.7 bar with the new owner with no issues. That's the route I personally would take. Quote Link to comment Share on other sites More sharing options...
Chris Bailey Posted November 20, 2012 Author Share Posted November 20, 2012 How about coil packs, when I had my single mapped it missed at 1.5bar so Ryan turned boost back to 1.3 bar and it was fine. With new new coil packs it's now mapped to 1.7 bar with the new owner with no issues. That's the route I personally would take. It sounds like you had the same issue, It could be the coil packs but there a expensive part to change if thats not the problem. Is there anyway of checking the coil packs themselves? Quote Link to comment Share on other sites More sharing options...
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