turbotrana Member 2,586 Member For: 21y 9m 6d Gender: Male Posted 11/11/12 03:11 PM Share Posted 11/11/12 03:11 PM I think he should stick with his tuner. He is reputable and is trying to solve an unusual problem. In this case not a reflection of this tuners abilities.I would be more critical of a tuner who just left it with a stall and didn't do alot to try and resolve it. Link to comment Share on other sites More sharing options...
FGX 40T Donating Members 142 Member For: 14y 9m Gender: Male Location: WA - South of the River Posted 21/11/12 08:13 AM Author Share Posted 21/11/12 08:13 AM I think he should stick with his tuner. He is reputable and is trying to solve an unusual problem. In this case not a reflection of this tuners abilities.I would be more critical of a tuner who just left it with a stall and didn't do alot to try and resolve it.Any updates - have you managed to resolve the issue? Link to comment Share on other sites More sharing options...
f6mark Member 2,908 Member For: 13y 10m 22d Gender: Male Posted 21/11/12 08:30 AM Share Posted 21/11/12 08:30 AM what was the issue mate.?? Link to comment Share on other sites More sharing options...
IH8TOADS Silver Donating Members 3,618 Member For: 19y 5m 28d Gender: Male Location: OZ Posted 21/11/12 08:44 AM Share Posted 21/11/12 08:44 AM With new injectors and refined scaling trana mentioned it was much better.With the old injectors and custom tune, spark was well below commanded for no obvious reason and the spark source wasn't stable.With a stock tune and just scalars to suit injectors, the spark was as factory but I believe the issue still persisted to some extent due to occasional unstable spark source..... Trana to confirm.Managing the delivered spark value makes a huge difference. Anyone with hanging RPM in a B series (particuarly manuals) when approaching a stop may appreciate this. A tickle of the delivered spark value makes a world of difference. 1 Link to comment Share on other sites More sharing options...
turbotrana Member 2,586 Member For: 21y 9m 6d Gender: Male Posted 21/11/12 03:32 PM Share Posted 21/11/12 03:32 PM I can tune mine not to stall. It comes down to being an injector scalling issue. But still not sure that there is not an issue with the factory ford tune. As I bought the car tuned and stalling I am still not sure where the issue lies or if its just scaling issue. But getting rid of the Nizpro drilled injectors was part of the solution.The biggest improvement in idle ( when I put the G302 GT500 injectors in) was increasing the injector breakpoint from the recommended Ford Racing data breakpoint. THis indicated to me that the unstable idle was more a case of switching between slopes. Something I gotta talk to Toads about sometime. I need to get into the mathematics of injector breakpoints.I still have the spiking timing but read somewhere that this maybe an emissions tuning thing to clean the cylinders. Still need more research on this.Fg09. You might be better off trying a different injector that the tuner knows. Althought in theory the F6 injector should work sometimes its easier to try something else instead of finding that needle in a haystack. Link to comment Share on other sites More sharing options...
FGX 40T Donating Members 142 Member For: 14y 9m Gender: Male Location: WA - South of the River Posted 28/11/12 07:44 AM Author Share Posted 28/11/12 07:44 AM I can tune mine not to stall. It comes down to being an injector scalling issue. But still not sure that there is not an issue with the factory ford tune. As I bought the car tuned and stalling I am still not sure where the issue lies or if its just scaling issue. But getting rid of the Nizpro drilled injectors was part of the solution.The biggest improvement in idle ( when I put the G302 GT500 injectors in) was increasing the injector breakpoint from the recommended Ford Racing data breakpoint. THis indicated to me that the unstable idle was more a case of switching between slopes. Something I gotta talk to Toads about sometime. I need to get into the mathematics of injector breakpoints.I still have the spiking timing but read somewhere that this maybe an emissions tuning thing to clean the cylinders. Still need more research on this.Fg09. You might be better off trying a different injector that the tuner knows. Althought in theory the F6 injector should work sometimes its easier to try something else instead of finding that needle in a haystack.Does the idle still dip below 500 RPM or have you managed to stabilize that with adjustmets to the scaling and breakpoint Link to comment Share on other sites More sharing options...
turbotrana Member 2,586 Member For: 21y 9m 6d Gender: Male Posted 28/11/12 11:18 AM Share Posted 28/11/12 11:18 AM The idle is solid. It didnt dip much at all. However in your case I dont think the breakpoint will make much difference as the F6 injectors have a high and low slope that are very close to one another. Reversed engineered tuning software can be a real PIA. Just get your tuner to try some G302 or some ID1000s where he knows what scalars work and forget about the F6 injectors for now. Link to comment Share on other sites More sharing options...
BAR61R New Member 15 Member For: 12y 10m 25d Gender: Male Location: sydney parramatta Posted 15/12/12 04:26 AM Share Posted 15/12/12 04:26 AM I got the same problems idle dips down on breaking and stop doesnt always stall only when I drive my misses in the car does it I got f6 injecters maybe just get them changed should fic the problem Link to comment Share on other sites More sharing options...
turbotrana Member 2,586 Member For: 21y 9m 6d Gender: Male Posted 11/02/13 07:28 AM Share Posted 11/02/13 07:28 AM (edited) Did you ever solve your problem.Two things that have helped slightly further for me are the following.1. I found that my throttle body will stick closed if pushed to the most closed position. The spring in that area of rotation was maybe not as strong on the one that I replaced it with. I could see how the throttle can slam shut get stuck and stall. Just a theory but definately shouldn't stick and there was an improvement in behaviour of the car in the idle area.2. I put a smaller pulley on the alternator ( I used one from an AU alternator). Having the FG idle at 500/550 is at the point of high drop off voltage for the alternator. So if the tune is out by a little and the revs dip to 400 or less, voltage drops and it will play on the ECUs head quite a bit.I run 16:1 air fuel ratio at all cruise/idle rpms so to get it to have good drivability is alot harder than at 14.7. Edited 11/02/13 07:30 AM by turbotrana Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 3m 13d Gender: Male Location: Perth Posted 11/02/13 07:31 AM Share Posted 11/02/13 07:31 AM Do you notice an appreciable difference if fuel consumption running that lean @ idle/cruise? Link to comment Share on other sites More sharing options...
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