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  #101  
Old 09-17-2016, 12:17 PM
pbf777 pbf777 is offline
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Quote:
Originally Posted by Yadkin View Post
I was able to increase my AF rations on all three settings. I'm now running 14 at idle, 14.5 at WOT, and 14.7 at cruise.
Just some input from the peanut gallery: as you proceed in your tuning endeavor, always address your starting point with known rich fuel mixtures and known conservative timing values (reasonable of course). Then remove fuel sums progressively for best effect, acquiring what is often termed "Lean-Best-Torque", and add timing in the same fashion. One must be attentive with the process to acquire conclusions as one proceeds, so as to respond (tune) appropriately. Do not get to "hung-up" on the numbers as stated, as they are solely relative to your experience, but can provide a guide (perhaps a wake-up call!).

Keeping my last statement in mind, one is generally of the thought that 14.5 @ W.O.T. would be less than ideal (typically maybe 12.5 range?); and if accurate (and that's the catch!), perhaps even somewhat hazardous to survival of your engine. Remember, draw your own conclusions (perhaps with some guidance, as we all need some), and follow your own intuitions for best results.

Very nice & professional appearance. Scott.
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  #102  
Old 11-30-2016, 03:34 PM
Yadkin Yadkin is offline
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Still tweaking on this car, found a little issue with the fuel pressure regulator and got it mostly fixed.

I got onto I40 the other day on a two-lane ramp and a guy in a Kia "gerbil car" was neck-and-neck with me, so naturally I put my foot to the floor. The transmission never downshifted and I pulled away from him, but without the authority that I expect.

That night I started looking at the throttle linkage and found out that along with my kickdown off, the throttle plates weren't opening up fully. The linkage placement is slightly different with this new intake, and I never made the necessary adjustments. So I readjusted everything, reset a new base tune on the EFI then took it for a test ride.

After warming up I stopped for gas, stepped on it a little bit on my exit and unexpectedly spun the tires. Looks like I may be getting the tune right. When I got to the highway on ramp I put my foot to the floor and got up to 70 in the blink of an eye. Upshifting into third resulted in both back tires chirping.

I've driven V8s my whole life but this is my first performance big block. I'm not happy with the gas mileage but dang it's fun.
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  #103  
Old 11-30-2016, 04:08 PM
Joe Johnston Joe Johnston is offline
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Quote:
I'm not happy with the gas mileage but dang it's fun.
Gotta pay to play!
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  #104  
Old 12-01-2016, 09:26 AM
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Dan Leavens Dan Leavens is offline
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Joe isn't that the truth
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58HT #33317 60HT # 23023
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  #105  
Old 12-01-2016, 09:57 AM
Yadkin Yadkin is offline
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Originally Posted by Joe Johnston View Post
Gotta pay to play!
At least I know it's all getting burned, along with tire tread.
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  #106  
Old 12-02-2016, 09:52 AM
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Steve; That's for sure.

getting burned, along with tire tread.
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  #107  
Old 02-08-2017, 10:57 PM
Yadkin Yadkin is offline
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A guy on the FAST EFI forum suggested that I use a colder plug. After 400 miles this is what they look like:
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  #108  
Old 02-09-2017, 10:28 AM
Yadkin Yadkin is offline
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The plugs below were running on the initial set-up for AF ratios, which is fairly rich. The FAST forum is saying that these plugs look good based on the side electrode burn, and that I should lean out from 13.5 to 14.6 at cruise to eliminate the soot. I think that makes sense so have another set of plugs on order (I broke two taking them out).
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