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Old 05-14-2008, 01:58 AM   #1
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Default Setting MS up with a RRFPR

MSPNP arrived today and I'm installing it tomorrow. I have 460cc injectors on the way but will need to set it up right now for the setup as-is since the injectors will still need to be sent out to be cleaned, plus I want to change one thing at a time anyways.
Sooo... I read through the full manual and still don't understand exactly what needs to be changed in the settings to allow for my 12:1 Vortech...
Could you MS gurus shed some light here for me?
-Ryan
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Old 05-14-2008, 02:14 AM   #2
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Basically, you'll need to artificially scale down the boosted rows in the VE table. For example, if at 100 kpa at 4,000 RPM you have a VE of 100, then at 150 kpa you'll actually want the VE to be much lower. Maybe 75? Just a guess. Essentially, you need to trick the MS into not seeing the fact that the engine is under boost, since it doesn't know that the RRFPR is increasing the fuel pressure and rendering the MS's Req_Fuel constant incorrect.
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Old 05-14-2008, 02:24 AM   #3
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Good gravy... maybe I should wait for the injectors so I can yank the vortech...

I don't know how I feel about guessing on values and then doing a pull to see if I maybe got it close...
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Old 05-14-2008, 03:11 AM   #4
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Dude id just remove the FPR, or dont install the MS yet.
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Old 05-14-2008, 03:24 AM   #5
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Good gravy... maybe I should wait for the injectors so I can yank the vortech...
This.
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Old 05-14-2008, 05:25 AM   #6
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Or, I could disconnect the wastegate actuator and remove the vortech, install megasquirt and get it running properly on the car, then in about two weeks when I've gotten the injectors back from injector rehab I can install them, adjust MS accordingly, and reconnect the actuator.
Any holes in this plan? The car would essentially run as an N/A car would just with a strange exhaust restriction (turbo) and abnormally long intake piping lol
Maybe this would be good for me as I seem to be forgetting how slow a stock 1.6 motor feels the longer I drive the turbo haha.
-Ryan
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Old 05-14-2008, 10:24 AM   #7
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In all honesty it will work just fine. All you are doing is increasing the size of your injectors as boost hits, so you'd scale you fuel map accordingly.
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Old 05-14-2008, 11:07 AM   #8
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you're making your system too complex, wait and install both together
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Old 05-14-2008, 09:14 PM   #9
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I'm running my system right now with the rising rate fpr. No problems. AFR's are where they should be. I've just been lazy to install the 460cc injectors that I have. Sometime next week I will install it.
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Old 05-15-2008, 03:06 PM   #10
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Ok, MSPNP is in. Putted to work and back last night and everything ran great. Today I'm converting it from reading the narrowband o2 to my wideband, and then I'm going to set the VE table up to account for the RRFPR. Just want to double check with you guys that the only thing I need to adjust to account for this is the VE, yes?
And one last question, since the MS comes from DIYAutotune set up for an NA miata, I know I'll need to extend the VE table above 100 kpa, and set those values for boosted times, but do I need to alter the Accel Enrichment or the Spark table from how the MSPNP comes since I'm boosted?
Thanks
-Ryan
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Old 05-15-2008, 04:37 PM   #11
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The tables extend well past 100 kPa - just that they're pig rich and the timing is way retarded above it.
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Old 05-15-2008, 05:00 PM   #12
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Quote:
Originally Posted by ThePass View Post
do I need to alter the Accel Enrichment or the Spark table from how the MSPNP comes since I'm boosted?
Thanks
-Ryan
every car is different, so yes. That's the easiest part though.
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Old 05-15-2008, 05:52 PM   #13
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I suppose it will seem "easy" once I've figured it all out. From where I'm sitting having never adjusted accel enrich or spark, it's not so "easy" looking.
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Old 05-15-2008, 06:08 PM   #14
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Quote:
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I suppose it will seem "easy" once I've figured it all out. From where I'm sitting having never adjusted accel enrich or spark, it's not so "easy" looking.
you can just look at the wideband gauge and know if you need more or less fuel when you stomp on the loud pedal.

done
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