Little Beavis
Member
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- 2001 MP3-T (#911)
Where is the voltage clamp in terms of the ecu and mpi?
O2 >>>>>> MPI >>>>> Voltage Clamp >>>>>> ECU?????????
O2 >>>>>> MPI >>>>> Voltage Clamp >>>>>> ECU?????????
Fuel system SOLUTIONS...
- Thread starter LinuxRacr
- Start date
7
70
That is a better way of asking what I asked...Little Beavis said:
YEAH! What he said?
Linux, just to let you know, you can add any of the extra reading things on the left of the SW to see what they do on any particular map. You can look back at old datalogs and add some of the other features to see where the voltages are. I didn't know if you knew that, but I thought I would let ya know. I keep as many on as I can. Some of them do not do anything with our setup, but for the most part, they all have some type of info you may want to look at.
Keep in mind you can increase the values as much as you want, but you quit adding fuel at 5v. There is no point in taking your values up that high if they don't do anything.
Keep in mind you can increase the values as much as you want, but you quit adding fuel at 5v. There is no point in taking your values up that high if they don't do anything.
LinuxRacr said:
I hope you can get it figured out bro, mine is still doing the same s*** as yours, and I am out of ideas.
All of you keep in mind that I have a different PCM than pat's, and my car has only 24k on it. I don't think that cleaning the injectors and changing the fuel filter will help.
I am almost ready to use the MPI for EIC and timing retard ONLY. I should NOT be leaning out to 13:1 and pinging at stock boost on a msp at 5500ft... even if the analog numbers were only at zero (which they were not). That has happened three times now, and I got off the gas quickly without hurting the motor too bad I hope.
I also am starting to wonder if something is wrong with the batch of tuners that we got Pat. All in the same week I got mine, then Robert got his and he ended up blowing his motor at like 6psi, and then you got your's. I think igdrasil was also in that batch and blew his motor.(hmm)
Tonight I accually drove into work without my laptop hooked up. I just watched my Wideband, because I know that no matter how close I get my Analog out voltage to 4.98, the same s*** will happen with fuel pulling. I'm really wondering why fuel is still being pulled? I should have those other injectors by Tuesday, so I will change them out and see what happens. If all this is happening due to something not being hooked up correctly, I would be (as Mike Tyson would say) "estatic" about fixing the issue. Now I am only able to hit like 3 PSI max, at 13 A/F ratio. Keep in mind I have 19's in my Analog map, and it still pulls.505zoom said:I hope you can get it figured out bro, mine is still doing the same s*** as yours, and I am out of ideas.
All of you keep in mind that I have a different PCM than pat's, and my car has only 24k on it. I don't think that cleaning the injectors and changing the fuel filter will help.
I am almost ready to use the MPI for EIC and timing retard ONLY. I should NOT be leaning out to 13:1 and pinging at stock boost on a msp at 5500ft... even if the analog numbers were only at zero (which they were not). That has happened three times now, and I got off the gas quickly without hurting the motor too bad I hope.
I also am starting to wonder if something is wrong with the batch of tuners that we got Pat. All in the same week I got mine, then Robert got his and he ended up blowing his motor at like 6psi, and then you got your's. I think igdrasil was also in that batch and blew his motor.(hmm)
LinuxRacr said:
I hear ya, but it seems like the PCM is somehow pulling fuel even when I add with the extra injectors.(uhm)
I also would be very happy if we could find something wrong with our wiring and fix it, but I find it hard to believe that both of us would have made the same mistake at nearly the same time.
This is getting pretty damn interesting. Even when the PDA tool is showing the voltage being clamped, the MPI software shows the voltage close to 1v. Also, I don't know if the 2nd O2 sensor is indeed being figured into the equation somehow. And last, how stable is the DC voltage that is feeding the MPI/Turbo Module? I don't have an oscilloscope to test this. I know that clean power is needed for some ECU applications for particular brands. Time for me to hit the SMT-6/MPI manual again!(RTM)
BTW, I changed my map again, and brought the numbers back down from 19 to 8's and 9's as the high numbers. I also noticed I got more consistant results if I eased into boost slowly. I guess as the inital load decreases more, it lets the A/F ratio be slightly lower. I also noticed if I romped on the gas fast, and let the boost build quick, and then let off (before fuel has a chance to be added), I could drive and shift quick.
7
70
Will your PDA dyno let you look at the second o2 sensor fuel trim??LinuxRacr said:
Mine has the option, but I haven't looked at it yet. I watched the voltage and it was considerably higher than the front one. I haven't had time to play much with mine except for the drive around the block, which was interesting.
Also have you watched your long term and short term fuel trim??
Tonight on the way to work was really interesting. Remember last, I changed my values to 8's and 9's for high values? Well, I changed my numbers in the 2nd column to mostly 3's from 4's, and things seemed to flow better. Midway thru my drive to work tonight, I downshifted to 4th gear, instead of hitting it in 5th, and I got riatch biatch!!!! (eekdance) Well, from then on when I hit it in 5th gear, it seemed like my whole fuel curve had moved down, and I was able to boost 5-6 PSI no problem. Well, I just watched the playback logs, and noticed A/F ratio in the MPI software was showing 13.7 at the lowest point which means that the FM voltage clamp was doing it's job well again. I wonder if I got a new FM voltage clamp, would this be a more consistant result? It would suck to buy a new FM clamp, and it not do what I want.
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