fordguy17

the act sensor senses what temp. the incoming air charge is.

it is located in the number 5 runner in your lower intake manifold.

vfast

ko...all that data can be done with a tweecer rt and a laptop..in can be useful in maybe getting a set up so you can fine tune it with a tweecer rt or the like

StangStang

How much is a dyno tune compared to a tweecer rt? where can I find a tweecer rt?

vfast

www.tweecer.com

3 pulls with A/F most place charge 70-100 pluse 150-350 for a chip then 50-100 for reflashes and more dyno time
tweecer rt new is like 550..a tweecer is like 325-350

95whitecobra

A twEECer is an excellant self-tuning tool as it data-logs and combined with a wide-band you can optimize your car's performance. However, for those who don't constantly mod, a dyno-tune & chip is a good choice as long as you don't change the combo.

Crazyfast50stang

Does a tweecer come with instruction on what to look for when tuning? And how to get the most out of your tuning?

Crash7772

If your going to keep your engine the same for several years burn a chip and leave it. If your going to change your heads-intake-exhaust-etc then get a tweecer but keep in mind there is a learning curve with tweecers. The local dyno shop charges $400 for a 4 position (power-economy-nitrous-etc) SCT chip with all the time you need on the dyno and I think $100 for a reburn with all the dyno time you need.

KovacMotorsports

Yes, self tuning systems like the tweecer and PMS are great tools for tuning. Not everyone wants to or is capable of devoting the time to learn how to tune. Most people would rather build thier cars and leave it to the experienced tuners to tune thier cars. One of the problems with self tuning on the street is you never know if you have the optimum set up. Its very difficuly to feel changes in HP just by driving it especially if the combination is new and unfamiliar. The car will seem to be running the same though youve made many changes. Also the repeatablility is difficult to maintain while tuning on the street or at the track. You can leave a significant amout of HP on the table because you didnt happen to notice much of a difference in the seat of the pants feel from a certain change. The dyno gives you a more acurrate gauge by being able to see the difference small changes may make. Thier are no absolutes when it comes to tuning, every car is slightly different and what may have worked for your friends car may not be optimum for your set up even though they may be similar. It may be ok for your minor bolt on cars, but when you start talking about heads, cams, superchargers, etc. its much better, safer and more accurate to get a dyno tune by a professional. Especially if its a true race car thats used for competition where every ounce of power is important.

Doc

KovacMotorsports

To get the most out of your tuning you have to understand how an engine works. You have to know what an Air/ fuel ratio is and how it effects your cars performance. You have to know when to add fuel and when to take it out and when just enough is not enough. You have to understand why your engine has a timing curve and how and why it effects the way your engine performs. You have to know when to add and when to subtract timing in the curve and why. You have to understand how one change may effect another part of your tune and what you'll need to correct the effect. You'll need to know what makes up a MAF transfer function and why its important. You'll need to know what short term and long term fuel trims are and what they do and when and why they need to be changed. You'll need to know what fuel injector breakpoints, injector slopes, and injector pulse widths are and how, why, and when you should change them. You'll need to learn the voltage ranges of the various sensors that input information to your PCM and learn to indentify when and why they are out of range. Fun stuff like that.....lol. I was just playin...you should really know these things and more though before you attempt to tune your engine as its very easy to make bad choices just randomly changing settings to see what they do. You could damage you engine doing that although most of the systems like the tweecer come with instructions I find them lacking. I would read the boards and take notes as well as buy some good books on tuning ford EFI's and get really familiar with how the system works if you want to get the most out of your tune. Knowledge is power, in this case its literally power...lol.


Doc