Team-Atomic-Andrew Posted February 28, 2010 Report Share Posted February 28, 2010 gonna try something i read on teh interwebz 2morrow, its a voltage mod similar to the MLA mod but only for a few cars, i have a ALT that the regulators are controled by the car computer, im going to put a diode on the sensor line so it sees that the alt is producing less voltage, therefore it steps it up, going to try this on a bench alt first if no problems going to move it to my car, will post pics when i do it and the results Quote Link to comment Share on other sites More sharing options...
treossi Posted February 28, 2010 Report Share Posted February 28, 2010 yeah my buddy did this, it ended up doing 15 volts Quote Team sundownWESTCOASTSPL.COM we're throwing dbdrag events very soon visit the website for details Link to comment Share on other sites More sharing options...
Team-Atomic-Andrew Posted February 28, 2010 Author Report Share Posted February 28, 2010 yea just trying for a few more until i can get a new one at the end of march Quote Link to comment Share on other sites More sharing options...
Guest DC Power Rob Posted February 28, 2010 Report Share Posted February 28, 2010 gonna try something i read on teh interwebz 2morrow, its a voltage mod similar to the MLA mod but only for a few cars, i have a ALT that the regulators are controled by the car computer, im going to put a diode on the sensor line so it sees that the alt is producing less voltage, therefore it steps it up, going to try this on a bench alt first if no problems going to move it to my car, will post pics when i do it and the results Your alternator isn't controlled by the PCM. Very common myth/misunderstanding about alternators. The only "TRUE" PCM controlled alternators are most Dodge/Chrysler/Jeep vehicles, where the PCM technically IS the voltage regulator and controls alternator output. There are other PCM integrated alternators, where the alternators regulator is excited and controlled by the PCM, but the internal regulator still controls output and voltage. There are also quite a few vehicles and types of alternators that are just activated by the PCM, but the PCM has no "control" over the alternator itself. On your alternator, as most others with a "S" or sensing terminal, adding a diode inline just lowers the voltage the regulator sees at the "S" terminal and it over compensates raising voltage to what it thinks it should be. On some vehicles it works, some it doesn't, but 99.9% of the time I would highly recommend against doing what your doing because you can do more damage than what you stand to gain, especially with a stock alternator. Quote Link to comment Share on other sites More sharing options...
Team-Atomic-Andrew Posted March 1, 2010 Author Report Share Posted March 1, 2010 Your alternator isn't controlled by the PCM. Very common myth/misunderstanding about alternators. The only "TRUE" PCM controlled alternators are most Dodge/Chrysler/Jeep vehicles, where the PCM technically IS the voltage regulator and controls alternator output. There are other PCM integrated alternators, where the alternators regulator is excited and controlled by the PCM, but the internal regulator still controls output and voltage. There are also quite a few vehicles and types of alternators that are just activated by the PCM, but the PCM has no "control" over the alternator itself. On your alternator, as most others with a "S" or sensing terminal, adding a diode inline just lowers the voltage the regulator sees at the "S" terminal and it over compensates raising voltage to what it thinks it should be. On some vehicles it works, some it doesn't, but 99.9% of the time I would highly recommend against doing what your doing because you can do more damage than what you stand to gain, especially with a stock alternator. robbie, i did plenty of testing on the bench alt, and it worked fine, so i moved it to the car and it looks as tho its working fine running at 15.19v pics time before diode after should hold me over till i get down to you at the end of march robbie Quote Link to comment Share on other sites More sharing options...
Steph3n1 Posted March 1, 2010 Report Share Posted March 1, 2010 robbie, i did plenty of testing on the bench alt, and it worked fine, so i moved it to the car and it looks as tho its working fine running at 15.19v pics time should hold me over till i get down to you at the end of march robbie pretty interesting but wouldent this put shit loads of stress on your alt Quote 2005 Ford Ranger Reg cab Build in Progress T3 Audio T2000 12 ARC SE4000 Stinger HPM 1/0 Wire DC power 270xp Batts: 1 Redtop up front and a Stinger SPP2250 in the back Hopes to be in and around a 150....weel see my youtube channel http://www.youtube.com/user/steph3n1 Team DBs (Driven By sound) Link to comment Share on other sites More sharing options...
AI James Posted March 1, 2010 Report Share Posted March 1, 2010 it does stress the alternator, as the internal workings of the unit were not made to handle that kind of load over periods of time. call me a dick for saying it, but after warnings form an alternator manu about why its not good to do and you still doing it...id probably laugh at the car catching fire because "it works just fine" Quote Link to comment Share on other sites More sharing options...
Steph3n1 Posted March 1, 2010 Report Share Posted March 1, 2010 it does stress the alternator, as the internal workings of the unit were not made to handle that kind of load over periods of time. call me a dick for saying it, but after warnings form an alternator manu about why its not good to do and you still doing it...id probably laugh at the car catching fire because "it works just fine" hahaha. your hilarious man. but yea i care more about my car all together then have a "little" more power until i get a real alt. plus if you have alot of batteries it stresses the alt even more i see flames in the future Quote 2005 Ford Ranger Reg cab Build in Progress T3 Audio T2000 12 ARC SE4000 Stinger HPM 1/0 Wire DC power 270xp Batts: 1 Redtop up front and a Stinger SPP2250 in the back Hopes to be in and around a 150....weel see my youtube channel http://www.youtube.com/user/steph3n1 Team DBs (Driven By sound) Link to comment Share on other sites More sharing options...
Iraggi Alternator Posted March 1, 2010 Report Share Posted March 1, 2010 pretty interesting but wouldent this put shit loads of stress on your alt Im so glad someone finally gets it. Please tell everyone.!! Quote Link to comment Share on other sites More sharing options...
Team-Atomic-Andrew Posted March 1, 2010 Author Report Share Posted March 1, 2010 Im so glad someone finally gets it. Please tell everyone.!! yes i know it stresses the alt, i dont even have an amp hooked up at this time, just doing it to help top off my batts, should be getting a better alt at the end of march at that time i will be removing this, i was more interested in seeing how it works \my stock alt is pretty rugged for being stock, so we will see how it fairs Quote Link to comment Share on other sites More sharing options...
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