Injector Flow Rate vs MAF table for Fuel Tuning
Re: Injector Flow Rate vs MAF table for Fuel Tuning i used the injector flow rate to tune my WOT A/F.
don't know if you could get good results from the injector table when compared to the MAF settings.
don't know if you could get good results from the injector table when compared to the MAF settings.
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Re: Injector Flow Rate vs MAF table for Fuel Tuning Modify your IFR tables to get negative LTFTs at part throttle.
Use the PE vs RPM to tune WOT once you have negative LTFTs ( LTFTs lock at zero, if negative or zero, when PE is entered).
Only use MAF table to adjust LTFTs IF you have a modified MAF. Good Luck.
joel
Use the PE vs RPM to tune WOT once you have negative LTFTs ( LTFTs lock at zero, if negative or zero, when PE is entered).
Only use MAF table to adjust LTFTs IF you have a modified MAF. Good Luck.
joel
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Re: Injector Flow Rate vs MAF table for Fuel Tuning
Modify your IFR tables to get negative LTFTs at part throttle.
Use the PE vs RPM to tune WOT once you have negative LTFTs ( LTFTs lock at zero, if negative or zero, when PE is entered).
Only use MAF table to adjust LTFTs IF you have a modified MAF. Good Luck.
joel
Use the PE vs RPM to tune WOT once you have negative LTFTs ( LTFTs lock at zero, if negative or zero, when PE is entered).
Only use MAF table to adjust LTFTs IF you have a modified MAF. Good Luck.
joel
After reading a few of NoGo's and Cal's posts, my understanding is the VE tables are where adjustments are suppose to be made.
Can someone clear this up?
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Re: Injector Flow Rate vs MAF table for Fuel Tuning No it't not wrong. Reread NoGo and Cal's posts. The VE table can be used to fine(Micro)tune fueling at particular RPM ranges. General (Macro) fuel is MAP dependent and should be adjusted with IFR.
joel(Bink)
joel(Bink)
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Re: Injector Flow Rate vs MAF table for Fuel Tuning
Modify your IFR tables to get negative LTFTs at part throttle.
Use the PE vs RPM to tune WOT once you have negative LTFTs ( LTFTs lock at zero, if negative or zero, when PE is entered).
Only use MAF table to adjust LTFTs IF you have a modified MAF. Good Luck.
joel
Use the PE vs RPM to tune WOT once you have negative LTFTs ( LTFTs lock at zero, if negative or zero, when PE is entered).
Only use MAF table to adjust LTFTs IF you have a modified MAF. Good Luck.
joel
This is exactly how I tuned; it was simple and worked perfectly...
Good luck!
Tommy
Re: Injector Flow Rate vs MAF table for Fuel Tuning Thanks for the feedback
Ok, I am going to revert back to my stock MAF table, then modify my IFR table, then visit PE vs RPM
I have stock injectors and stock MAF (it is descreened tho)
One final question....
While Autotapping, is it better to average FTC 1-19 to get my LTFT levels, OR just my load cells 6-14? I heard both scenarios are ok.....
Thanks
Ok, I am going to revert back to my stock MAF table, then modify my IFR table, then visit PE vs RPM
I have stock injectors and stock MAF (it is descreened tho)
One final question....
While Autotapping, is it better to average FTC 1-19 to get my LTFT levels, OR just my load cells 6-14? I heard both scenarios are ok.....
Thanks
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Re: Injector Flow Rate vs MAF table for Fuel Tuning
Modify your IFR tables to get negative LTFTs at part throttle.
Use the PE vs RPM to tune WOT once you have negative LTFTs ( LTFTs lock at zero, if negative or zero, when PE is entered).
Only use MAF table to adjust LTFTs IF you have a modified MAF. Good Luck.
joel
Use the PE vs RPM to tune WOT once you have negative LTFTs ( LTFTs lock at zero, if negative or zero, when PE is entered).
Only use MAF table to adjust LTFTs IF you have a modified MAF. Good Luck.
joel
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From: Albuquerque NM - The Land of 8000ft DA
Re: Injector Flow Rate vs MAF table for Fuel Tuning
No it't not wrong. Reread NoGo and Cal's posts. The VE table can be used to fine(Micro)tune fueling at particular RPM ranges. General (Macro) fuel is MAP dependent and should be adjusted with IFR.
joel(Bink)
joel(Bink)
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Re: Injector Flow Rate vs MAF table for Fuel Tuning
Modify your IFR tables to get negative LTFTs at part throttle.
Use the PE vs RPM to tune WOT once you have negative LTFTs ( LTFTs lock at zero, if negative or zero, when PE is entered).
Only use MAF table to adjust LTFTs IF you have a modified MAF. Good Luck.
joel
Use the PE vs RPM to tune WOT once you have negative LTFTs ( LTFTs lock at zero, if negative or zero, when PE is entered).
Only use MAF table to adjust LTFTs IF you have a modified MAF. Good Luck.
joel
joel(Bink)
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Re: Injector Flow Rate vs MAF table for Fuel Tuning
Modify your IFR tables to get negative LTFTs at part throttle.
Use the PE vs RPM to tune WOT once you have negative LTFTs ( LTFTs lock at zero, if negative or zero, when PE is entered).
Only use MAF table to adjust LTFTs IF you have a modified MAF. Good Luck.
joel
Use the PE vs RPM to tune WOT once you have negative LTFTs ( LTFTs lock at zero, if negative or zero, when PE is entered).
Only use MAF table to adjust LTFTs IF you have a modified MAF. Good Luck.
joel
If you want an education in tuning do a search on tuning and read every post by NoGo you can find.I've read the LS1edit archives and if you correlate dates you'll see that NoGo (Kevin) actually had a grasp of LS1 tuning long before most of the Gurus - It's actually kind of funny - he's such a humble Guy,
Very 
joel
Re: Injector Flow Rate vs MAF table for Fuel Tuning I've tuned cars many ways and you can use the MAF table if you roll it under 10,000 htz.You can also use the IFR table to tune in.I use one or the other based on what A-tap readings I get.Also your timing table setup has affects on certain readings.
Re: Injector Flow Rate vs MAF table for Fuel Tuning
I've tuned cars many ways and you can use the MAF table if you roll it under 10,000 htz.You can also use the IFR table to tune in.I use one or the other based on what A-tap readings I get.Also your timing table setup has affects on certain readings.
The MAF reading is a prime contributor to the engine load calculation. The engine load calculation factors into timing, torque management, tip in, knock reduction, tranny line pressure, just to name a few. You can adjust fueling using the MAF table, but it is often going to bring with it an unseen negative side effects.
One of these unseen side effects, which prompted people to stop using the MAF table, is transmission line pressure on automatic transmissions. If you use the MAF table to indicate less air then there actually is (lean your car out), the engine load calculation is shifted down. A reduction in calculated engine load means a reduction in transmission line pressure. The incorrect reduction of tranny line pressure will cause the transmission to shift lighter under heavy load conditions. This causes the transmission to slip. Many people's transmissions went to an early grave because of this. This is just one example of what can go wrong when adjusting your MAF.
The Injector Flow Rate table only effects one thing: The injector flow rate.
The Timing table only effects one thing: Timing.
Naturally, there is a cause and effect with the timing table. Example: If you increase timing too much your car is going to detonate and hence KR increases. There are many modifiers that adjust the ignition timing AFTER it has been looked up on the base table (either High or Low Octane)
The High and Low Octane tables are sole output tables. They only control the base ignition advance value, nothing else.
Re: Injector Flow Rate vs MAF table for Fuel Tuning I should of explained my tuning more.I found the affects of MAF adjustments in A4 cars and there is a easy way around it.As for affects of timing,I do some computer tweaking and run as high as 30 degree's of timing as low as 2k rpm all the way up with absolutely no knock retard and no extra fuel to compensate.This give's the most torque out of your setup.Say a 405rwhp car can push 395-400tq with 350+ from as low as 2000rpm.
So I do agree with alot of info on this board,but dissagree with some by testing many different way's of tuning for the street and 100's of hours on the dyno.
From what I see there is alot left in Edit tuning that has not been found yet.Makes it more fun
So I do agree with alot of info on this board,but dissagree with some by testing many different way's of tuning for the street and 100's of hours on the dyno.
From what I see there is alot left in Edit tuning that has not been found yet.Makes it more fun
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Re: Injector Flow Rate vs MAF table for Fuel Tuning
Thanks binks, I appreciate the compliment.
There are many of us here that want to "understand" tuning - that's obvious. Your posts are a HUGE help.
joel(Bink)
....I'm off -> to hunt down a Tach wire short!!
Re: Injector Flow Rate vs MAF table for Fuel Tuning So on an m6 with an 85mm maf the maf table can be used to dial in wide open throttle. I found it easy to make adjustments with the maf table for fine tuning. I think we are going to go in on one of those wideband O2 readers for $350.
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From: Albuquerque NM - The Land of 8000ft DA
Re: Injector Flow Rate vs MAF table for Fuel Tuning
Thanks binks, I appreciate the compliment.
There are many of us here that want to "understand" tuning - that's obvious. Your posts are a HUGE help.
joel(Bink)
....I'm off -> to hunt down a Tach wire short!!
