Anderson Engineering Manifold Spacer install

I fish better in my crocs than in my flip flops.

 

If a $300 mod moved torque ~1000rpm on a race car, i'd want a dyno to verify it. For a truck, i think multiple "noticeable difference" reports is just fine for me.

 

Dyno is only during WOT though. Results may will not be representative of normal driving.

 

What good is log data? It doesn't tell you the power output. Things like 0-60 won't show hardly anything here. The only thing that will tell us if it's effective is power output or how it felt

 

Because a lot those who install the spacer are claiming they don't care about the top end because they'll never be there. So what's relevant to them is not a Dyno run. Data logging can show what "normal" driving looked like before and after the install.

 

That makes no sense.

Data logging cannot show output, but that's what we are trying to show. So you either have to take the guys word, his "feel", or you need something that measures output. A data log won't show anything other than the throttle was opened and rpms changed. There is no opportunity to show that the power moved and since it moved but didn't really change then things like 0-60 times mean nothing.

Again, unless you can capture engine output and compare before and after than logs do nothing because you have to compare those logs against output to get any sense of what happened

What exactly do you think you can log that is going to have any meaning?

 

Sure, if you only log throttle or RPM's
But you can log much MUCH more than that.

Regardless, you keep using the false dichotomy fallacy in your arguments so instead of beating a dead horse, I'll just leave you with this gif I found online:

 

Nice deflection

Tell us what you would be logging and how that tells us how output has moved

 

Good question. I am planning on getting the spacer and recording data before and after the spacer install but...pulling my 5100 lb trailer. So looking for what data to log via OBD Fusion.

 

What the dyno tells you after you put your truck on one.

Without a dyno there is little logging can provide, at least nothing that is solid enough to change confirmation bias. Total acceleration may show something but it has to be on the exact same section of road with the exact same truck weight. And still, accelerating 4,000 lbs is going to change so little with 20ftlbs it's hard to get out of the noise in the data from the logs.

Things like engine load calculation can give some insight. As can calculated output. Not conclusive by any sense, but something I guess.

If you really wanted to get into it a dozen or so pulls (without heat soak) over the EXACT same section of road, before and after, and then logging rpm at a very high rate, could be used to calculate a rate of change. The math then dives into statistics, standard deviation, and a bunch of annoying things.

 

Read through this thread. The answer was previously provided.

 

Should I buy that URD y pipe for $785
& I’d re torque mani bolts after first drive*

 

I'll add in that you should include airflow and fuel flow. It won't be conclusive that it is making more power but it is another piece of evidence that can be crafted. Just don't slow down your logging rate too much

 

You get 90% of your torque around 2600. The torque they reference is much higher in the rpm band. You wouldn’t even notice a difference below 3000

 

Log basics before and after on the same stretch of the road driving normally and a few pulls.
Accelerator, throttle, Maf, load, rpms, fuel trims(short&long), lambdas, ignition , intake air temp, tranny gear, torque converter status.
We could calculate volumetric efficiency say at 2000 rpms based on average of captured data and compare 2 sets of data. Theoretically, spacer's data should produce higher VE % for given conditions vs non-spacer.

So I pulled my techstream logs and punched the numbers into VE calculator. The calculate load in techstream for given conditions is 65% and matches the calculator

 

If it were still available, I'd say yes. But they don't make them anymore.
And yeah, I know. Thanks.

 

@Great Dane , how is it now that you have driven it for a while.

 

is the URD different than afe y pipe?
i'm thinking about building my own after i build a spare fuel tank

 

I have experience with both. I came from URD, didn't really like it, and now I have aFe installed.

The URD has a larger piping, so it gets quite raspy, especially if you an open catback. Tolerance is somewhat strict, so exhaust leaks at the cats can happen. I then had fitment issues, were the pipe would hit the transmission crossmember.

aFe is made of 409 stainless vs urd's 304. Piping size on the aFe is the same as stock. I have the catless version, which seems to be discontinued.