AMChrisRose

Alot of people were asking about the Stock tune vs. Bama tune vs. ProCal, - here you go:

So, we have some preliminary Bama test results comparing our 93 Race tune to the ProCal tune to the stock tune.

These results were done yesterday, all within an hour, with about 25 minutes of cool down time between each run. Same car, same dyno, etc. All runs were done on a Dynojet 224xLC with no added load on the dyno, inertia pulls. All runs are SAE corrected and smoothing is at 5.

So with the stock tune, obviously the converter is unlocked (which also makes the graphs not so pretty, so you'll see a few little weird bumps or oscillations) and you can't lock it into gear, so we had to manually run it in 3rd gear. That's fine, because the ProCal tool also has the converter unlocked and we couldn't lock it in gear. We even did this with the Bama tune, to be fair.

All 3 runs were done manually in third gear (automatic transmission) without locking the converter on our 2011 Mustang GT auto.

The only modifications done to the car at the time were 4.10 gears, and the ProCal tool and drop-in air filter on the stock air box. The stock run was the stock tune with just the 4.10 gears inputted. The ProCal tool was put in with just the 4.10 gear change as well. Our Bama 93 Race tune was loaded with 4.10 gears (we made no changes - this is exactly as it would ship to a customer).

So the horsepower numbers should be about right (running the car in 3rd, 4th, 5th gear on the 2011 auto transmission really doesn't change more than a few horsepower). Either way, they were all done in the identical gear. We know this isn't the 1:1, but we didn't have a choice - and like we said, we've done tons of testing with running in different gears and the horsepower/torque difference is almost as small as any back-to-back runs would have.

The only thing is that typically, to run on a dyno the converter would be locked - and that would be worth maybe a few more percent horsepower/torque. But again, the converter was unlocked in ALL of the runs consistently.

The air/fuel ratio was read from the tailpipe, so it's going to look a little lean on the graph. The datalogs showed 12.5-13.0 on the Bama 93 tune, and about the same on the Procal tool. However, the ProCal tool had a weird rich dip down low, and then a weird lean dip mid-range. It did settle and was fine from there-out. The stock tune was anywhere from low-mid 12's air/fuel. The mid range it was mid-12s, down low and up top it was low 12's.

These are preliminary runs and we're going to be doing even more testing with it. Please feel free to comment or ask as many questions as you'd like.

Completely Stock w/93 Octane in the Tank - 352.59 RWHP / 312.49 RWTQ - SAE Corrected

FRPP ProCal 91 Calibration (to be fair) w/93 Octane in the Tank (same fuel as previous run) - 347.83 RWHP / 318.17 RWTQ - SAE Corrected

Bama 93 Race Tune w/93 Octane in the Tank (same fuel as previous two runs) - 367.85 RWHP / 362.95 RWTQ - SAE Corrected

IMAGE WAS WAY TOO BIG - STRETCHES OUT THE ENTIRE FORUM - CLICK THE LINK BELOW FOR DYNO GRAPHS!!!

DIRECT LINK TO IMAGE: http://files.americanmuscle.com/foru..._vs_ProCal.jpg

jsnyng

Nice, the ProCal tune loses HP.

GT Premi

I totally believe that having firsthand experience w/ the Procal II tuner.

HareBrained

That lean out above 6500 in the ProCal tune is dangerous. Something is terribly wrong there. That should never happen. That's negligent to have that in customers' hands. And even around 4000, it's too thin. Changes >1 should not happen from a shop that knows what they're doing.

Why does the stock tune have 20 ftlbs & 5 HP more than the other tunes at 3k RPM? Given the granularity of the fuel maps, etc, can't the performance tune match the stock tune from 3200 down?

The Bama Tune torque curve is impressive from 3700-5500 RPMs. What's with the peak at 3600? Was it noticeable in the real world?

AMChrisRose

The tune is definitely noticable in the real world. We've since added some timing down low in order to gain power over the factory tune. If we did this test again, we'd kick *** down low, as well.

buzzard32

seeing as you altered the tune should we be asking for the updated tune?
Also the added timing down low is this at WOT only or at part throttle as well?

JIM5.0

I think Harebrained is not asking about the tune itself as a whole, I think he is asking about the little "spike" or "rosebush thorn" on the Bama tune right at around 3650 RPM.

What is that tiny "spike" or "rosebush thorn" on the Bama torque and power curves at 3650 RPM?

AMChrisRose

Ahhh, gotcha. That's something in mph (gear ratio picks it up), so it has to be trans or tires. There's all sorts of converter weirdness when you don't use a dyno lock file. It's 99% most likely the converter.

AMChrisRose

If you just submit a tune request, you'll get the updated files.