Gen3 Coyote 2020 Mustang GT "Full Bolt-on E85" Optimal Tune...Upcoming Dyno testing

[deanm11]

Attached is my tune. One attempt at the track, couldn't hook and even spun on shifts well down the track. Better Hoosier drag radials on order.
11.47 @ 125.94 / 1.91 60ft/ 1/8th: 7.525 @ 100.69. DA was around 1200ft or so.

I"m confident of 10s if the car will hook with full traction in decent air. Thrilled with the trap speeds and pretty confident of a very solid current tune. But always wondering if there can be more.

I do think I may have a tenth in moving shifts from about 7350 to 7800ish. That's part of the reason to dyno - to see how well power is holding up out to 7800.

Main purpose of my post is if you have suggestions of things you'd like to see tried on the dyno, I have a number of hours of open dyno time coming up in July. I plan to mess with spark and fuel even though I think based on collective wisdom and street testing that I have to be nearly there. I may try cam timing and GDI pressure.

Anything else you'd suggest testing with available dyno or would like tested for benefit of the community ?

Build is:

No-option 2020 Mustang GT 10r80
About 150lbs weight savings incl. wheels/tires, Baer 2piece rotors, QA1 carbon fiber driveshaft.
Complete 3.55 Ecoboost rear swapped in/ DSS 800hp LH axle
Full steeda rear suspension / 1" lowering springs
Deciding whether I should dyno on the summer tire setup -275-40-17 Nitto NT555r2 drag radials
Kooks 1 7/8" catted headers
Magnaflow 12469 muffler/resonator
Borla S-type exhaust
Ported 2018-2021 Intake
Ported throttle body
Velossa air intake snorkel
Steeda pro-flow closed AC w/ custom honeycomb air straightener (Steeda tube insert not in place)
"E72" (as tested) pump ethanol

[SultanHassanMasTuning]

logs of the car would help assist you so we can see if there is any limitations that are taking place during your testing

[deanm11]

Certainly. Logs attached. Thank you.

[engineermike]

Curious, where did the mbt values come from? Do you not trust Ford’s mbt tables?

[deanm11]

I moved them up roughly in line with what I've seen others do for E85 tunes, as well as some dyno testing of optimal WOT timing. I'll at least do my own dyno verification of optimal WOT timing.

[K44]

I would try lowering MBT due to the density of E.

That is my next test. I will use the truck MBT tables vs the mustang then depending on trap speeds try to fine tune.

[engineermike]

The stock gen3 cal has mbt peaking around 26-27 in the midrange and dropping to 23-24 up top. Ford seems to think that mbt on e85 is 1-4 deg LOWER than gasoline, which makes sense actually. That would mean you’d command 25-26 in the mid and 22-23 up top. That is, if you think ford’s mbt is accurate.

[K44]

That is, if you think ford’s mbt is accurate.

So far I've been finding that Ford's OP tables and WOT settings are pretty damn spot on.

Normally aspirated.

[Grim5.0]

in for results. planned to see what my setup was actually at for mbt on e later this summer.

the gen3 f150 mbt tables are about 1-2 degrees less than the mustangs from the few i went over and then with flex fuel it pulls another 1 degree. (wot load areas)

interesting considering any log from the big name tuners shows 30-32 degrees all in from low rpm to redline. some run 32 on gen3, others 30 and usually 32 on the gen2.

[deanm11]

Well I think I've got my main testing area! Thank you. Dyno isn't until July 14.

[deanm11]

Last call! Anything people would like me to try on Wednesday? Would anyone have suggestions particularly on the GDI pressure testing? Only need to pump up 'DI Desired Fuel Rail Pressure' / 7326 in the bottom rows, from 2900 ?

I have a number of hours of open dyno time. Any suggestions on a good cylinder head temperature to standardize on for runs?

[engineermike]

I’m running 3200 psi gdi pressure now and curious if pressures over 3350 even work. It switches to a different injector profiles at 3335 psi and I don’t know if it’s correct since Ford wouldn’t have much reason to even populate those fields.

[engineermike]

The higher pressure allows less injector opening time and theoretically better/quicker evaporation, at the expense of pump volumetric flow capacity.

[deanm11]

Thank you for the info. I'll see if I can test 2900-stock/3100/3300.

[deanm11]

Summary of results: (~470 SAE hp, 425lb-ft torque)

Timing - slight pickup at +2degrees (to around 30.5-31 peak) from around 4200rpm up. No gain down low.
GDI pressure - barely any measurable difference
Intkae Cam timing - picked up 10hp at the top end. NOT from stock levels - this walked back substantially what I had tuned previously.
Exhaust Cam timing - small power gain up to about 4500rpm by +7 degrees, again at least partly reversing my previous tuning...

I'll post details in successive posts. Attached are logs for my off street tune and the +2 degrees ignition timing.

As far as absolute #s - car is through the cats and with a Magnaflow center muffler/resonator. I think the hero 500+ FBO E85 #s are catless and more open exhaust.
I ran on 275-40-17 Nitto drag radials -apparently that's a few hp. Shop owner before we started said he is generally 10-15 low to average dynojets, he asserts due to his heavier than standard drum (5500lbs?) Obviously it should be adjusting but possibly not perfect.


FBO E85 base vs plus2 timing.JPG

[deanm11]

Start then 3200GDI pressure logs attached.

GDI test above 4000rpm.JPG

GDI test below 4000rpm.JPG

[decipha]

Stock cats are good for over 1,000rwhp no problem

[WobbleWobble]

This is fantastic info for the Gen 3 Guys for sure. Wish people did this for the Previous Gens. Since not everyone here is a tuning shop and are here just trying to do there own thing to there own vehicles

[deanm11]

Here's my final tune, attached, discerning the best tune from all my runs. I didn't have time while my dyno meter was running to fully analyze and apply the changes differently across rpm. I feel pretty confident about super close to optimal results with this tune. I've also attached the log of my final dyno run, which should correspond to my final tune at least from around 5500rpm on up.

Again, key FBO hard parts (running on pump "E72"):

Kooks 1 7/8 long tubes with cats. Magnaflow mid-muffler/resonator, Borla S-type.
Steeda pro-flow closed intake box (no insert, my own honeycomb air straightener)
Ported stock intake manifold and throttle body. Velossa air intake duct

3.55 rear out of Ecoboost
QA1 carbon fiber driveshaft, DSS LH half shaft
Enkei RPF1 17x9 rear wheels with Nitto 555rii 275-40-17 drag radials

[Volstang]

Really appreciate the info you share! All the R&D and time on dyno really helps get the most from your combo. Very nice work!