EditorTurner

New Member
Established Member
Joined
Oct 18, 2011
Messages
1,049
Location
Lakeland, FL
0-HP-Tuners-Coyote-Rev-Fix_Featured.jpg


Beyond Boss
Rev your early Coyote automatic past 8,000 rpm thanks to HP Tuners
By Steve Turner
Photos by Steve Turner and courtesy of HP Tuners

If you own a first-gen Coyote automatic, you might have been jealous of the high-revving antics of those manual-transmission cars. Well, you can now end that envy thanks to the industrious crew at HP Tuners. They have cracked the code to allow 2011-2014 Mustang GT automatics to rev all the way past 8,000 rpm.

“The 11-14 Coyotes use a different PCM,” Eric Brooks, Ford Calibration/Development specialist at HP Tuners, said. “The 2015 PCM is quite a bit more powerful and from the factory do not have some of the limits that the Copperhead PCM has.”

While the newer PCM is powerful it has its own tuning challenges. When it comes to the Copperhead unit that controls the earlier Coyotes, there was an easy fix to make the manual transmission cars rev like their RoadRunner and Voodoo cousins.

“We knew the Boss 302 and Cobra Jet were capable of more rpm, and merely reflashing a 2011-2014 Mustang GT with a factory Boss 302 tune would raise the limit up to above 8,000 rpm,” Eric explained. “The problem with this fix though is that it only applied to manual-transmission cars. We spent a few days studying the code and were able to figure out exactly what where the limit was coming from. We can now patch any Copperhead PCM to raise this rpm ceiling up quite a few hundred rpm.”

Watch Rebecca’s Mustang rev to 8,000 rpm here...

[video=youtube;uw2rPo0MFXM]https://www.youtube.com/watch?v=uw2rPo0MFXM[/video]

Of course, the extended rev range is great, but to turn that extra rpm into performance your car is going to need the supporting hardware to take advantage of that higher rpm.

“Not everyone will benefit from the extended range. Combinations that have Cobra Jet intake manifolds or aftermarket camshafts will now be able to take advantage of that extended range,” Eric said. “And what is more awesome that auto shifting at 8,000 rpm without a hiccup? We should see some e.t’s drop this year with this code patch.”

Not only does this software patch allow the automatic Coyotes to rev like a Boss, but the logic allows the Twin Independent Variable Cam Timing to function properly throughout the rev range.

One tuner that has already taken advantage of this new feature in the HP Tuners VCM Suite software is Justin Starkey of VMP Performance. He expects more consistent performance and lower e.t.’s from high-powered Coyotes automatics like the one his wife Rebecca campaigns in the NMRA Coyote Modified ranks.

“The patch allows us to exceed the 7,700rpm rev limit on automatic 11-14 Coyotes. On quicker, higher-horsepower ’11-’14 auto cars, this has been a big limitation at the track. Part of getting my own 2015 Mustang GT into the 9s with a stock motor and 82mm pulley was revving it higher,” Justin explained. “The more rpm you can turn, the less power drop off you see during shifts, and the quicker you go. I think this advancement in tuning is going to allow a lot of ’11-’14 6R80 Coyotes to go quicker. Already having done the dyno testing, we'll be track testing it this weekend at NMRA Georgia race on my wife’s 2011 Mustang GT.”

So thanks to the continuing product development at HP Tuners, the future looks bright for early Coyote automatics. We can’t wait to see the performance this latest software patch unlocks.

1-HP-Tuners-Coyote-Rev-Fix_OSPatch.jpg

The RPM Limit Patch for 2011-2014 Mustang GTs with automatic transmisisons is available right now to all calibrators using the HP Tuners software.

2-HP-Tuners-Coyote-Rev-Fix.jpg

If you have the hardware, the HP Tuners software will allow you to rev your early Coyote automatic past 8,000 rpm to take advantage of free-flowing intakes, big cams and rev-happy superchargers.

3-HP-Tuners-Coyote-Rev-Fix_log.jpg

Don’t rub your eyes. You are seeing that correctly. During his development testing Eric Brooks of HP Tuners was able to rev an automatic Coyote to a staggering 8,236 rpm, which is almost as high a Shelby GT350 can rev!
 

SonicDTR

Wasn't me.
Established Member
Premium Member
Joined
Sep 23, 2007
Messages
5,245
Location
Midwest
Nice work HPT!!

I'm sure their other Ford guy played a small part in the solution too though. ;)
 

Vert

Member
Established Member
Joined
Dec 4, 2013
Messages
870
Location
Indiana
If anyone plans to spin it that fast you better invest in timing and oil pump gears.
 

WhiTriCobra

PDP
Established Member
Joined
Oct 7, 2008
Messages
2,362
Location
GA
While datalogging, I've barely went past 8k twice. Like 8048 was one of them. It's weird to put a shift light on an auto car but I only wanted to keep it at 7800 when in S mode. Datalog, driving or track. But I'm tuned by another tuner. Cool read though.
 

jn2

Member
Established Member
Joined
Feb 11, 2016
Messages
440
Location
Austin, TX
One of the things they did not mention on this post is VCT timing at high RPMs reverts to 0* degrees with out the patch.
 

demas

Member
Established Member
Joined
Jul 18, 2015
Messages
509
Location
IL
Justin did it with my latest tune. Rev limiting is about 7400 I think
 

xecutioner

Member
Established Member
Joined
Aug 21, 2006
Messages
158
Location
Chandler Az
One of the things they did not mention on this post is VCT timing at high RPMs reverts to 0* degrees with out the patch.

Do you have anymore information about this? I've had a on going problem through several tuners where when shifting at WOT my car drops to 0-9 degrees of timing. My current tuner tweaked my torque tables and that has been bandaid for the problem so it's not as much of an issue anymore.
 

corysmach1

Active Member
Established Member
Joined
Mar 22, 2004
Messages
4,386
Location
Circleville, Ohio
I have a manual. Which I believe hard knocks at 8100. Can I get more RPM if I switch to HP tuners? If so how much more? I run a CJ setup Stage 3 cams....
 

Shaun@AED

Well-Known Member
Joined
Jul 13, 2005
Messages
2,253
Location
CA
8500 is the RPM limit, but we've run into other issues going past 8000, which is why I limit customers RPM.
Screen shot:
8500RPM_zpsfe4qdjhm.jpg
 

tek302

Member
Established Member
Joined
Dec 21, 2014
Messages
180
Location
Rowlett, TX
From what he told me a while back. You lose power on the shift into the next gear when going over 7,999rpm. It reduces timing at the beginning of the gear
 

charba951

BOOSTTD
Established Member
Joined
Mar 22, 2012
Messages
6,831
Location
Fort Meade, MD
From what he told me a while back. You lose power on the shift into the next gear when going over 7,999rpm. It reduces timing at the beginning of the gear

I had the same problem at the track, I datalogged it and found out I was hitting the soft limiter I guess lol. Would lose all power shifting into the next gear. I wasn't shifting that high though.
 

corysmach1

Active Member
Established Member
Joined
Mar 22, 2004
Messages
4,386
Location
Circleville, Ohio
With Comp Cams NSR series the limiting factor for RPM is valve float.



Correct.

I run Boss valve springs. The car absolutely buries to 8k. O eventually wanna spin it over 8k when I eventually do the heads and make 5:14 gears work. The 4:88s now aren't enough gear......not saying I would shift over 8k but I have shift light set at 7600 now to not hit the box. To make 5:14s work after the heads and weight loss I would need 8200-8400 to get through the traps I believe.....may have to get a stand alone ECU.
 
Last edited:

Shaun@AED

Well-Known Member
Joined
Jul 13, 2005
Messages
2,253
Location
CA
I run Boss valve springs. The car absolutely buries to 8k. O eventually wanna spin it over 8k when I eventually do the heads and make 5:14 gears work. The 4:88s now aren't enough gear......not saying I would shift over 8k but I have shift light set at 7600 now to not hit the box. To make 5:14s work after the heads and weight loss I would need 8200-8400 to get through the traps I believe.....may have to get a stand alone ECU.

We see float on GT springs at 7600-7800 with Comps NSR line, Boss springs have 8lbs higher seat pressure, that does not give us much room and it's impossible to determine the point of valve float in a given application without actually hitting valve float. If you want to chance kissing the exhaust valve and piston I will raise your limiters to 8500, but I do not recommend it and you will still have VCT reverting back to base if you shift above 8K or if RPM's flare past 8K during a shift. Going thru the traps at 8500 is not the issue, it's VCT after a shift that changes.
 

corysmach1

Active Member
Established Member
Joined
Mar 22, 2004
Messages
4,386
Location
Circleville, Ohio
We see float on GT springs at 7600-7800 with Comps NSR line, Boss springs have 8lbs higher seat pressure, that does not give us much room and it's impossible to determine the point of valve float in a given application without actually hitting valve float. If you want to chance kissing the exhaust valve and piston I will raise your limiters to 8500, but I do not recommend it and you will still have VCT reverting back to base if you shift above 8K or if RPM's flare past 8K during a shift. Going thru the traps at 8500 is not the issue, it's VCT after a shift that changes.

No thanks. Lol. The car runs great as it is. So to shift past 8k with no issues would be a stand alone ECU?
 
Last edited:

SonicDTR

Wasn't me.
Established Member
Premium Member
Joined
Sep 23, 2007
Messages
5,245
Location
Midwest
No thanks. Lol. The car runs great as it is. So to shift past 8k with no issues would be a stand alone ECU?

Or the patch with HPTuners mentioned in the original post...ya know, the entire point of this thread?
 

Users who are viewing this thread



Top