RobertISaar Posted May 22, 2009 Report Share Posted May 22, 2009 was working with the guys on 60*v6 to get this working, figured i'd share with everyone here as well. http://60degreev6.com/forum/f104/the-obd1-5-to-obd1-conversion-thread-t43453 if you want to read up on how it went thats the link, post #49 on page 5 has the PDF i made detailing everything necessary. this should help out quite a few members... Quote Link to comment Share on other sites More sharing options...
ManicMechanic Posted May 22, 2009 Report Share Posted May 22, 2009 Good work Robert. Quote Link to comment Share on other sites More sharing options...
RobertISaar Posted May 22, 2009 Author Report Share Posted May 22, 2009 i do seem to be doing a lot of sticky/FAQ worthy threads lately... and thanks, manic. Quote Link to comment Share on other sites More sharing options...
RobertISaar Posted May 31, 2009 Author Report Share Posted May 31, 2009 Moved? damn, and i was hoping it was into the FAQ section... Quote Link to comment Share on other sites More sharing options...
BXX Posted May 31, 2009 Report Share Posted May 31, 2009 So why not just stick a distributer and 4 bbl carb on it now?? Going backwards was stupid really.. OBD2 swap would have just been changing a few wires around really.. Quote Link to comment Share on other sites More sharing options...
GP1138 Posted May 31, 2009 Report Share Posted May 31, 2009 So why not just stick a distributer and 4 bbl carb on it now?? Going backwards was stupid really.. OBD2 swap would have just been changing a few wires around really.. x2, and you can tune OBD2 as well... Quote Link to comment Share on other sites More sharing options...
RobertISaar Posted May 31, 2009 Author Report Share Posted May 31, 2009 So why not just stick a distributer and 4 bbl carb on it now?? Going backwards was stupid really.. OBD2 swap would have just been changing a few wires around really.. x2, and you can tune OBD2 as well... this is all for the reasons of cost and the fact that obd2 offers nothing to me that obd1 doesn't(thats important, anyway). Quote Link to comment Share on other sites More sharing options...
GP1138 Posted May 31, 2009 Report Share Posted May 31, 2009 this is all for the reasons of cost and the fact that obd2 offers nothing to me that obd1 doesn't(thats important, anyway). ... constant monitoring of many more variables and data than OBD1 is unable to provide, better interfacing, faster data rate, among other things. Why do you think OBD2 is the standard now?? Quote Link to comment Share on other sites More sharing options...
RobertISaar Posted May 31, 2009 Author Report Share Posted May 31, 2009 this is all for the reasons of cost and the fact that obd2 offers nothing to me that obd1 doesn't(thats important, anyway). ... constant monitoring of many more variables and data than OBD1 is unable to provide, better interfacing, faster data rate, among other things. Why do you think OBD2 is the standard now?? government mandated???? i see no benefit for obd2, i could care less about SFI since its not something that is in effect 100% of the time, as far as interfacing, i'm not sure what you mean by that. data rate: i log 9 samples per second, thats already a headache to deal with. you know what: i'll modify my statement a little- i would consider obd2 if i was to swap in a 3900 since VVT is something that i would actually want that obd1 can't deliver. with the exception of that or running direct injection or whatever else comes up in the near future that OBD1 cannot control, i'll stick with what i know. and wouldn't i need a MAF sensor for obd2, as well as a few other things that the 95 3100s didn't get? Quote Link to comment Share on other sites More sharing options...
BXX Posted May 31, 2009 Report Share Posted May 31, 2009 SFI is in effect 100% of the time!!! Why do you think ours 3x00s have camshaft sensors??? Our engines dont batch fire injectors sometimes and then sequentially whenever they feel like it.. Who told you that info?? Let me guess, the same person who though back tracking was a bright idea?? Soo you can log, but not enough to determine a misfire on lets say cyl 1 for example.. I can, and its quite useful to be able to tell which cylinder is misfiring.. Oh yeah, enjoy not being able to tune your trans shift points and line pressure!! All we are saying is that you spent too much effort for an old obsolete system.. Quote Link to comment Share on other sites More sharing options...
BXX Posted May 31, 2009 Report Share Posted May 31, 2009 You do need the MAF for OBD2.. Actually, I can tune a MAF out and run strickly VE tuning using my MAP.. But thats another backwards step.. Quote Link to comment Share on other sites More sharing options...
RobertISaar Posted May 31, 2009 Author Report Share Posted May 31, 2009 SFI is in effect 100% of the time!!! Why do you think ours 3x00s have camshaft sensors??? Our engines dont batch fire injectors sometimes and then sequentially whenever they feel like it.. Who told you that info?? Let me guess, the same person who though back tracking was a bright idea?? Soo you can log, but not enough to determine a misfire on lets say cyl 1 for example.. I can, and its quite useful to be able to tell which cylinder is misfiring.. Oh yeah, enjoy not being able to tune your trans shift points and line pressure!! All we are saying is that you spent too much effort for an old obsolete system.. from what i have been told by multiple people, SFI either: 1. doesn't matter above a certain RPM since the exact opening time of the injector won't matter because of the duty cycle it will be at, or 2. the PCM reverts to batch fire and ignores the cam position sensor until the engine speed drops below that threshold. cylinder misfire: if i wouldn't know how to figure out which one was firing, then the weak/dead cylinder value might have some importance to me, but simple checks will determine which cylinder is bad. shift points: yes i can, its not the RPM based that obd2 is, but i can adjust them in a MPH VS TPS table. line pressure: thats controlled by the vaccum modulator anyways, so unless i either get a newer tranny, or retrofit the computer controlled parts into this tranny, its impossible. and so what if its obsolete, the same thing could be said about OHV VS DOHC, and port injection VS DI, and whole mess of other things, but like i mentioned earlier, for the cost and simplicity, this is great for me, and i'm sure others as well. Quote Link to comment Share on other sites More sharing options...
BXX Posted May 31, 2009 Report Share Posted May 31, 2009 Whoever told you our engines dont run SFI 100% of the time is a complete fucktard... Hell, unplug your cam sensor and see how well it runs I can guarendamntee you it wont!! And yes, I can increase line pressure even though its vacuum modulated.. Your 95 trans is the same as my 96.. Even though I cant do much with the line pressure maps, I can easily over-ride it using the FMC table.. So, how do your AE, DE, and PE maps look?? Does OBD1 even have them, not to the extent that OBD2 has which helps with driveability. Quote Link to comment Share on other sites More sharing options...
RobertISaar Posted May 31, 2009 Author Report Share Posted May 31, 2009 Whoever told you our engines dont run SFI 100% of the time is a complete fucktard... Hell, unplug your cam sensor and see how well it runs I can guarendamntee you it wont!! And yes, I can increase line pressure even though its vacuum modulated.. Your 95 trans is the same as my 96.. Even though I cant do much with the line pressure maps, I can easily over-ride it using the FMC table.. So, how do your AE, DE, and PE maps look?? Does OBD1 even have them, not to the extent that OBD2 has which helps with driveability. yeah, the maps are all there. and unplugging the cam sensor reverts the engine back to batch fire. i'll fire up TP and get some screens for you. question though: i have a feeling what the answer is to this one but: is there any kind of "lean cruise" option? that is something i've noticed multiple obd1 ECM/PCMs have and i have a feeling that the EPA wouldn't allow it to happen again. Quote Link to comment Share on other sites More sharing options...
RobertISaar Posted May 31, 2009 Author Report Share Posted May 31, 2009 i might be able to open all of the tables at the same time but it would be pretty cramped, which ones exactly were you refering to? Quote Link to comment Share on other sites More sharing options...
BXX Posted May 31, 2009 Report Share Posted May 31, 2009 unplugging the sensor doesnt revert to batch fire.. The car either wont run or it tried to SFI fire them based off rpm and crank signal... Quote Link to comment Share on other sites More sharing options...
RobertISaar Posted May 31, 2009 Author Report Share Posted May 31, 2009 unplugging the sensor doesnt revert to batch fire.. The car either wont run or it tried to SFI fire them based off rpm and crank signal... its what i've been told. i've seen a reason to unplug myself, but whatever, my car idles at least as well as it did with the 1.5PCM. Quote Link to comment Share on other sites More sharing options...
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