I just hope we all can now get past anymore MPI bashing from people and some mods[not you Pat] who just did not want to see that facts for what they are or maybe for their own screwed up reasons. Like I have stated 100s of times before. If your s*** is not right you cannot tune for it no matter what system you have. Now you still are not done. You have injectors to clean for one. Then you need to retune your car with the MAF or the Worlds best O2 tuner to get it 100% once and for all.
Now using the MAP sensor..
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MPNick on the ignition timing bar on the MPI software, is that reading actual timing? B/c his software is saying it has full bar of timing at idle and it is saying under throttle its pulling timing. His PDA dyno says otherwise through his obd2 scan port. I think something maybe wrong with the ignition set up? Also, how/why did the analog map come up with a bunch of trash values after loading a map? because the MAF isnt hooked up.
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The ignition tab is more or less then the stock values, so a -4 is 4 degree's retarded off the stock timing. How is the computer communicating, USB or serial. Is the battery strong in the car, maybe that's causing an issue. Is is a map that you've used before?JDM Sam said:
Yea i set the values i had working pretty good on another car and used the fuel and timing #s that worked on patricks old maps. Let me take a screen shot and highlight what im talking about. Its not on the ignition tab. I'm talkin about the bars on the left side of the screen.Bigg Tim said:
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Like who?MPNick said:
And how much timing would have been pulled if you ran on pump gas? If 116 octane fuel isn't so great, then why did Dean run it? And why did he blow a piston while using 93/94 octane the day after the dyno using the same tune map that he ran on C16? Reason is, that the car was tuned so aggressively that you couldn't run it on pump gas, but you could do it on C16.
Hopefully.
Super. What's any of this have to do with me being a moderator?
Nor do you. You're the guy who told me I should be running a 12:1 AFR while off of boost. I let you tune my car for 5 minutes after we installed the MPI, and it ran like utter crap. You're the guy who I had to EXPLAIN WHY ALL DYNO SHEETS MUST CROSS AT 5252. You did not even understand how horespower was calculated. So while there are pleny of things you do know about cars, there's a lot that you don't. You yourself don't understand all that is needed for tuning.
You know, I'm getting sick of your attitude, Nick. I try to be a nice guy and you keep taking stabs at me. For the last time, I am not, nor have I ever bashed the MPI. Besides, what are my "screwed up reasons" for "bashing the MPI"? This oughtta be funny. I like to tune it a different way than you. Get over it, already.MPNick said:
Ok, wait...he couldn't make it past 15psi due to the spark issue, so he turned it up another 9psi to 24psi? Does that not make sense to anyone else but me?MPNick said:
I assume you mean "why" did I break my piston at 250whp? Well, firstly, I obviously had more than 250whp at the time. Secondly, it wasn't a fuel issue. I added fuel with my extra injectors, just like Dean did. So what if I didn't eek every last drop of fuel from my stock injectors? Lastly, I think it was spark related. The MAP adds fuel fine. But these coils have trouble sparking in the cold for whatever reason. Once it dipped below 45* or so, the car didn't spark the same. Apparently I'm not the only one with this problem.
We were in my car. I told you that it felt odd around 2500rpm, so you started to add fuel down low, off of boost. I asked you why you were doing it and you said "it needs more fuel to make power". Then you went on explaining how a "modern head design needs more fuel to run properly", etc. So I gave you the benefit of the doubt and let you do what you wanted. When you were done, the car had the worst tune in it that I have ever run.
Then don't blame me for not "knowing it all" either.
In my own personal case, I used to run a perfect 14.7:1 AFR from the second I turned the key when I had an FMU. I didn't start running lean at idle until I added the MPI. I reckon Linux is in the same boat as me. Don't try to blame it on the fact that he's not MAF tuning.MPNick said:
Perhaps the resistance that the MPI adds when you wire it in is enough at a low RPM to lean it out a tad (until you blip the throttle and it relearns)?
Anyway, Linux, I pulled a degree or two of timing at idle and it fixed me up pretty good.
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