jayrex Posted May 7, 2015 Share Posted May 7, 2015 I've done my tuning homework, but I just wanted to get a little feedback on a Injector scaler tuning. This is just a 'sanity check' for now, I will probably make a detailed post soon. Just installed 850cc injectors - my stockers were at 100% duty cycle. Research says new scaler number should be: (Old CC/New CC) * Stock Scaler Value = New Scaler Value (550/850) * 5200 = 3365 With this value I am left with fuel trims at approx: A -10 B -8 C -1 D -.5 I keep lowering the value but the change is only marginal. My most recent trial is 3320, which seems extreme, no? A -8 B -6 C -1 D -.2 I have a wideband that I'm keeping an eye on, but I haven't logged any WOT yet because I JUST got the serial cable working late last night. (Took me 3 days to figure out my connection issues, what a PITA) AFR pegs right to 10, so I'm not running lean in WOT. Anyway, I know I have some logging to do. But what are you fine peoples general take on it? Keep lowering the scaler? I don't know if I trust the flow sheet it came with, I don't have it in front of me, at work currently. What are some of your scalers values for 850's? Thanks Jay Link to comment Share on other sites More sharing options...
joeleodee Posted May 7, 2015 Share Posted May 7, 2015 Your trims aren't terrible, but which injectors and what are you latencies? Link to comment Share on other sites More sharing options...
jayrex Posted May 7, 2015 Author Share Posted May 7, 2015 Hey thanks for the reply. I would really like to confirm that decreasing the injector scale number would tell the ecu the injectors are even bigger / flow more, and in turn help with the rich conditions. I know this is a borderline 'stupid' question, but I just want to make sure I'm thinking correctly, and it just seem like changes to the injector scale should be more noticeable. Can a rough number be dialed in for injector scale at idle while live tuning? Or is WOT pulls with WB02 logs the only way? Attached Test Report Injectors are from eBay. I have since realized these are potentially a mistake. They do not specifically say, but research points to Venom brand. Voltage 6, 9 , 11.5, 14, 16 Latency 7.06, 2.15, 1.17, 0.75, 0.58 This seemed to idle well while live tuning via AccessTuner My fuel trims are a bit worse now after another 30 mins of driving. A -14 B -6 C -1 D -2 They went in very smooth, I polished up the lip on the rail too. but if I had a leak, would it be super obvious? My OEM sensor matches the WB O2 within +-0.1 Link to comment Share on other sites More sharing options...
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