tweecer?
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Joined: Dec 2008
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From: Mass.
tweecer?
well, since the build im planning is obviously going to need some way of being tuned instead of paying someone copious amounts of money everytime i want to add to the motor i was thinking of a tweecer. how hard is it to learn how to use? i figure if i plan on doing more builds with efi i might as well learn this now since ive got to start somewhere.
i cant decide if ill be using 24lb or 30lb injectors but either way im going to have to do something for a tune
i plan on using a mustang a9l mass air ecu and a calibrated maf for whichever injector size i choose for what its worth.
i cant decide if ill be using 24lb or 30lb injectors but either way im going to have to do something for a tune
i plan on using a mustang a9l mass air ecu and a calibrated maf for whichever injector size i choose for what its worth.
FTE Legend
Joined: Jun 2006
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From: Ottawa, Ontario
For the most part a tool like the Tweecer isn't hard to use or difficult to learn, it's understanding how the EEC processor operates and what all the acronyms represent that takes some time. Have a look over on the Tweecer web page and download the manual, and then register with this place and read all the documentation they have. EECTuning.org • Index page
FWIW these tuners also eliminate the need for these so called "calibrated" injector/MAF combos too, because you can directly enter the MAF transfer function as well as the injector size and a few other related parameters.
FWIW these tuners also eliminate the need for these so called "calibrated" injector/MAF combos too, because you can directly enter the MAF transfer function as well as the injector size and a few other related parameters.
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Joined: Dec 2008
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From: Mass.
quick off topic question, will 24lb injectors be fine for something in the 300-400hp range? i plan on having an adjustable fuel pressure regulator so i can bump up the pressure a little if needed. i have alot of people telling me to get 30lbers but i dont see the need.
FTE Legend
Joined: Jun 2006
Posts: 31,930
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From: Ottawa, Ontario
The basic idea with injector sizing is that you never want the injectors to reach 100% capacity because holding them wide open will burn out the solenoid, they should always be doing some on/off switching. 80% is often the max value used for the calculation but there's nothing wrong with calculating for 90% capacity on a street motor since it's unlikely the motor will ever spend much time at that level. The volumetric efficiency of the engine also plays a role but there's no way to know exactly what that is so you have to make some assumptions. In the end there will be some overcapacity built into your selection but that provides some room for growth and should guarantee long live from the injectors.
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Joined: Jan 2009
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ahh ok, thats a big plus that can save me a few hundred dollars, so i can just use the stang stock air meter. after researching how much it was going to cost for dyno tuning i couldnt believe it plus the fact the closest tuner to here is about an hours drive so a tweecer seemed more logical to me. ill do some reading on there site, ive already glanced over it a few times and ive been on the ford lightning site alot, since im basically building a lightning motor.
quick off topic question, will 24lb injectors be fine for something in the 300-400hp range? i plan on having an adjustable fuel pressure regulator so i can bump up the pressure a little if needed. i have alot of people telling me to get 30lbers but i dont see the need.
quick off topic question, will 24lb injectors be fine for something in the 300-400hp range? i plan on having an adjustable fuel pressure regulator so i can bump up the pressure a little if needed. i have alot of people telling me to get 30lbers but i dont see the need.
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Posting Guru
Joined: Dec 2008
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From: Mass.
i think ill go with the 24lbers for now, since im basically building a lightning motor with a better cam/exhaust and some portwork on the heads and intake, figuring the lightning motor only came with 19lb injectors from the factory anyways, the 24s should suffice. with the tweecer i can setup the motor to run like this and then when i save the money for a supercharger i can retune. i think ill save a good bit of money with the tweecer.
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Postmaster
Joined: Jan 2009
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Yeah when your ready to get your MA meter they will help you out on injetor size . I went with 30# on my truck because im still planing more work . Check out the Pro M meters i have been using them for years . They have a great tech dept & will help alot . The meter will come with a flow sheet . They sell injectors that are a matched set that have been flow tested so there all the same , its worth the extra money & there not plastic but billit alum really nice stuff . Lew
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http://www.moates.net/product_info.php?cPath=50&products_id=199 - this
+
http://www.moates.net/product_info.php?cPath=73_63&products_id=204 - this
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EEC Analyzer - these two programs (registered).
I started with the Tweecer, but it only allows a certain amount of datalogging. The Quarterhorse can basically datalog every parameter in BE, which makes tuning a whole bunch easier. Either one will do the job
http://eectuning.org/forums/viewtopic.php?f=5&t=14004 - Tweecer vs Quarterhorse comparison
http://eectuning.org/forums/viewtopic.php?f=5&t=13989 - Quarterhorse install
+
http://www.moates.net/product_info.php?cPath=73_63&products_id=204 - this
+
EEC Analyzer - these two programs (registered).
I started with the Tweecer, but it only allows a certain amount of datalogging. The Quarterhorse can basically datalog every parameter in BE, which makes tuning a whole bunch easier. Either one will do the job
http://eectuning.org/forums/viewtopic.php?f=5&t=14004 - Tweecer vs Quarterhorse comparison
http://eectuning.org/forums/viewtopic.php?f=5&t=13989 - Quarterhorse install
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