MRC Stage 3 (RS2'd)
12-16-2005, 09:42 PM
#12
I'm using MRC Stage 3 RS2 S/w for #37 on my GT3071, on 91 octane
All I can say is :
1. It runs incredibly rich
2. Bob Meyers is very good on the support
3. Mihnea is hard to get ahold of and it takes forever to get tweaks
<img src="http://pictureposter.audiworld.com/58573/af_vs_rpm_12-03-05.jpg">
1. It runs incredibly rich
2. Bob Meyers is very good on the support
3. Mihnea is hard to get ahold of and it takes forever to get tweaks
<img src="http://pictureposter.audiworld.com/58573/af_vs_rpm_12-03-05.jpg">
12-17-2005, 01:53 AM
#14
Yes-with FPR tuned down from 58psi to 46 psi for equiv flow rate to 37# injectors (more edits)
<img src="http://www.rceng.com/formula-4.gif">
The MRC code I got was for 91 octane on #37 injectors with Stock MAF.
#37 @ 43.5 psi = 388cc/min, @ 58psi = 451cc/min
So our goal is to hit 451cc/min with #42
But #42 @ 43.5 psi = 440cc/min
So (451 / 440)^2 * 43.5 psi = 45.7psi
I set the FPR to 46psi and did an A/F run. It was rich A/F @ WOT ~ 9
So I did some runs and tweaked it down to 40psi A/F @ WOT went to ~ 10.x but ECU started complaining that it had reached adaption limit (add), and O2 sensor limit exceeded. So I had to turn it back up to 46psi - whereupon the error code went away and never came back :-/
The MRC code I got was for 91 octane on #37 injectors with Stock MAF.
#37 @ 43.5 psi = 388cc/min, @ 58psi = 451cc/min
So our goal is to hit 451cc/min with #42
But #42 @ 43.5 psi = 440cc/min
So (451 / 440)^2 * 43.5 psi = 45.7psi
I set the FPR to 46psi and did an A/F run. It was rich A/F @ WOT ~ 9
So I did some runs and tweaked it down to 40psi A/F @ WOT went to ~ 10.x but ECU started complaining that it had reached adaption limit (add), and O2 sensor limit exceeded. So I had to turn it back up to 46psi - whereupon the error code went away and never came back :-/
12-17-2005, 11:19 AM
#15
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Mihnea, please help....
Bob had mentioned that you (or him) were/was going to send me a new fuel/timing chip over 2 months ago so I can pull these Eiche chips back out. I've still seen nothing. Bob says his laptop is toast or something to that matter.
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