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Yeah,when things get too outa whack it's best to start over. Don't rely on someone else's data and tune for what your engine wants. Watch your duty cycle in the datalog. If DC is really high it's telling you that you need to turn the FP up. Like you said,one thing at a time.I’m going to set fp at 15psi and 65.5lb/hr in bin and test.
After that load stock ve table and test.
Then load the stock timing table.
I get carried away and was told to make one change at a time.
Thanks
What cam and compression are you running? Even with a fairly stiff cam, I would think at 24 PSI, you'd be running pig rich unless you leaned out your VE tables too much.I’m going to set fp at 15psi and 65.5lb/hr in bin and test.
After that load stock ve table and test.
Then load the stock timing table.
I get carried away and was told to make one change at a time.
Is that in your 383? He's running a pretty mild cam and I'm guessing stock CR.What cam and compression are you running? Even with a fairly stiff cam, I would think at 24 PSI, you'd be running pig rich unless you leaned out your VE tables too much.
As an example, you'd want your VE table looking something like this - smooth all the way through MAP/RPM ranges. Doesn't have to be perfect but, pretty close. FYI, this is with 61LB/HR injectors at 20PSI from EBL VE Learn (WBO2) and smoothing. Notice I'm going just above 90%. At WOT in PE I'm still getting ~12.5 AFR, YMMV
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Edit: Here's Low Speed
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Yep, that's why I was agreeing with you, he shouldn't need anywhere close to 24 PSI.Is that in your 383? He's running a pretty mild cam and I'm guessing stock CR.
Lowered FP to 15psi / 61lb/hr in bin and it’s working better than ever. Now it’s downshifting fast and positive when I give it throttle. I stop the test ride before I wanted to bc of rain and as soon as the streets dry I’m going out to make sure it’s really happening.Yep, that's why I was agreeing with you, he shouldn't need anywhere close to 24 PSI.
You guys figured it out! Thank you!
I bought my 95 GMC 1500 2x4 truck new from the dealer. Drove it 419k before it lost oil pressure in 2017. The original motor was a 305. Now it has 486k and I like it better now then when it was new. It still needs fine tuning and I will need more help. I’ve been tuning on it for 5 years and know the program and how to push the buttons but I have a lot more to learn.
Thanks again!
Ditto with your success!Cool! Now just make small gradual adjustments if needed. Start with timing,then fuel then back to timing.