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PostPosted: Fri Aug 07, 2015 7:44 am 
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Joined: Mon Jul 16, 2007 7:32 am
Posts: 85
Location: Brisbane, Australia
I've got the idle tune good and cruise

But I'm having trouble with WOT tuning. It goes rich just on boost (3000rpm,7.8.1) and leans after 4500rpm (10.5.1) but I can't figure why cause is.

Would this be a mechanical fault or adjusting settings in ecmlink to fix the problem.

I can adjust the mafcomp but seem awfully a big drop to change. I've decreased the global fuel and it's working but for evo 8 injectors -35% are not the correct setting for these.

So would it be better off fixing the global fuel and adjusting the fuel sliders in the rev range to even out the rich fuel. Just looking for a direction to fix this in the correct matter

I have logs if that helps.

I have a thread on ecmlink forums but not the most reliable feedback forum in the world


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PostPosted: Fri Aug 07, 2015 8:04 am 
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Joined: Fri Jun 12, 2015 9:25 am
Posts: 90
Location: new jersey
If those readings are afr. You are pig rich at 3000rpm and still rich at 4500 and above. you want to shoot for 14.7 at idle 13 cruising. And 11.5 on boost. These numbers are what you should shoot for afr.


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PostPosted: Fri Aug 07, 2015 3:48 pm 
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Joined: Mon Jul 16, 2007 7:32 am
Posts: 85
Location: Brisbane, Australia
AFR are prefect on WOT

AFR idle 14-15
WB idle 14-15

AFR cruise 13-15
WB 13-15

At WOT afr and wb match until boost comes on at 2500rpm. afr is a consistent line but wb drops as low as 7's all the way through to about 4500rpm and rises up to match afr.

signature update.

_________________
Forged vr4 motor.BC 280 cams.20g.evo 8 injectors 550.38mm wastegate.LC-1.Evo 3 maf.ecmlink lite.4g61 Intake. Evo 8 TB. FP manifold. FP Dump pipe.


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PostPosted: Fri Aug 07, 2015 10:54 pm 
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Joined: Fri Jun 12, 2015 9:25 am
Posts: 90
Location: new jersey
7 is really rich not lean.17 is lean.you have too much fuel either the upper part of the fuel table or the boost is leaking out. Do a boost leak test. Share the results


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PostPosted: Mon Aug 10, 2015 11:38 am 
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Joined: Mon Sep 24, 2007 5:50 pm
Posts: 1219
Location: Htown, TX
Post a log, we can't do anything but guess with what you're telling us.


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PostPosted: Mon Aug 17, 2015 7:13 am 
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Joined: Mon Jul 16, 2007 7:32 am
Posts: 85
Location: Brisbane, Australia
Yea, Just on boost it goes really rich and as it comes to full boost it leans out slightly.

1. Boost leak test from hotside IC to before throttle body. Tested at 30psi and I just had to tighten a few clamps.

2. Boost leak test at throttle body to check TB, inlet manifold, injectors. Didn't hear or see and leaks.

I've started from scratch tuning again to get my global fuel better at -18%. I followed the PDF "How to Tune a 1G V3"' that's been around about reading and over and over.

Here are the logs:
Warm Idle
Cruise
WOT

https://drive.google.com/folderview?id= ... sp=sharing

My only concern is about adjusting the mafcomp with a big dip in the sliders because it still reads a bit rich during boost. My Boost est (7psi) doesn't match my Gauge (14psi) either at 5500rpm. Would I need to correct the global fuel or it doesn't really matter since my wideband and afr match


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