Sponsored

2016 Mustang GT - Twin Turbo Hellion Build

15GTPP

Well-Known Member
Joined
Jan 13, 2015
Threads
36
Messages
428
Reaction score
223
Location
El Paso
First Name
Chris
Vehicle(s)
2019 GT
going to try .22 as that is what hellion is recommending....

7.5LBS is crazy, 12 LBS makes me kind of nervous LOL
got to get the new tires and rims mounted before i try that type of boost LOL
Oh yeah it’s definitely a learning process. I’m at 16lbs and it feels dumb I can’t imagine what 20+ feels like :crackup:
Sponsored

 

illtal

Well-Known Member
Joined
Nov 16, 2018
Threads
17
Messages
2,002
Reaction score
977
Location
USA
Vehicle(s)
2018 Mustang GT
I have my 6510’s gapped to .24. I think anything from .24-.28 should be good.
Just wait till you feel 12lbs :rockon:
At what point does one go to 2 heat ranges colder than stock? 15+ PSI?
 

15GTPP

Well-Known Member
Joined
Jan 13, 2015
Threads
36
Messages
428
Reaction score
223
Location
El Paso
First Name
Chris
Vehicle(s)
2019 GT
At what point does one go to 2 heat ranges colder than stock? 15+ PSI?
I’ve read that the 6510’s are good for up to like 18-20lbs. I had mine at .28 but started seeing some spark blowout around 15lbs. Put some new ones in gapped at .24 and haven’t had any more issues. The Brisk plugs are recommended for big power but they don’t last as long as the 6510’s.
 

illtal

Well-Known Member
Joined
Nov 16, 2018
Threads
17
Messages
2,002
Reaction score
977
Location
USA
Vehicle(s)
2018 Mustang GT
I’ve read that the 6510’s are good for up to like 18-20lbs. I had mine at .28 but started seeing some spark blowout around 15lbs. Put some new ones in gapped at .24 and haven’t had any more issues. The Brisk plugs are recommended for big power but they don’t last as long as the 6510’s.
My builder said that he wanted to run 2 ranges colder because we need to see at least 20# to get to the number. We might start at .24 for a gap just so there's not a lot of spark plug fuckery going on. We will run NGK brand only.
 

15GTPP

Well-Known Member
Joined
Jan 13, 2015
Threads
36
Messages
428
Reaction score
223
Location
El Paso
First Name
Chris
Vehicle(s)
2019 GT
My builder said that he wanted to run 2 ranges colder because we need to see at least 20# to get to the number. We might start at .24 for a gap just so there's not a lot of spark plug fuckery going on. We will run NGK brand only.
Nice! 20lbs is good power :rockon: The 6510’s are only 1 step colder but like the op I would gap to .22-.24 and see how it goes.

My buddy put down a little over 1200whp on 6510’s gapped at .24.
 

Sponsored

illtal

Well-Known Member
Joined
Nov 16, 2018
Threads
17
Messages
2,002
Reaction score
977
Location
USA
Vehicle(s)
2018 Mustang GT
Nice! 20lbs is good power :rockon: The 6510’s are only 1 step colder but like the op I would gap to .22-.24 and see how it goes.

My buddy put down a little over 1200whp on 6510’s gapped at .24.
Hmm that's some good info. We might just try the 6510's and see what happens. Since we don't have a stock engine I think we might only need about 20 to get a few my HPs out of it.
 

wazslow

Well-Known Member
Joined
Oct 10, 2014
Threads
13
Messages
641
Reaction score
547
Location
PA
Vehicle(s)
2016 Mustang GT/CS
I really hope it didn't get hurt on the dyno when tuning with the wrong injector data. Seems very unlikely a plug with a .028 gap is causing any issues at 7.5lbs of boost.
 
OP
OP
BenjiSayRuh

BenjiSayRuh

Well-Known Member
Joined
Nov 30, 2022
Threads
1
Messages
58
Reaction score
65
Location
Ewing NJ
First Name
Alaric
Vehicle(s)
2016 Mustang GT Premium Performance Pack
I really hope it didn't get hurt on the dyno when tuning with the wrong injector data. Seems very unlikely a plug with a .028 gap is causing any issues at 7.5lbs of boost.
just checked cylinder 1-4 ( pass side) and all look good. Some plugs were not gapped consistently
 
OP
OP
BenjiSayRuh

BenjiSayRuh

Well-Known Member
Joined
Nov 30, 2022
Threads
1
Messages
58
Reaction score
65
Location
Ewing NJ
First Name
Alaric
Vehicle(s)
2016 Mustang GT Premium Performance Pack
UPDATE:

Gapped the sparkplugs to .24 and checked all the cylinders.
All the pistons looked relatively the same.

Drove the car for about 45 minutes last night with some moderate pulls and the car feels great.
there was no stuttering or shaking from the car.

Drove the car to work today and there was no shaking or CEL.

Praying this was the fix!

447654692_2805426442930211_7058889467882173949_n (1).jpg
 

furdfan2018

Banned
Banned
Banned
Joined
Feb 23, 2023
Threads
1
Messages
478
Reaction score
604
Location
AZ
First Name
John
Vehicle(s)
Mustang
Keep us updated on how she feels when you turn it up.

14 or 15 psi is when youll start to feel valve float if you happen to be plagued with it. Some are lucky to not have it, others not so much.
 

Sponsored
OP
OP
BenjiSayRuh

BenjiSayRuh

Well-Known Member
Joined
Nov 30, 2022
Threads
1
Messages
58
Reaction score
65
Location
Ewing NJ
First Name
Alaric
Vehicle(s)
2016 Mustang GT Premium Performance Pack
Keep us updated on how she feels when you turn it up.

14 or 15 psi is when youll start to feel valve float if you happen to be plagued with it. Some are lucky to not have it, others not so much.
Will Do!

Found the issue with the "misfire" codes.
Upon investigation with the data and explaining to the tuner what was going on and when the misfire code would appear, my tuner and I determined it the "codes" were nothing to worry about.

We turned off Misfire Detection.

After having the car for over a week, I'm ready to turn up the boost and reduce timing!
the first tune was very conservatives, made AFR between 10.7-10.9 on WOT and lots of timing.
 

HKusp

Well-Known Member
Joined
Jul 22, 2021
Threads
36
Messages
1,917
Reaction score
2,398
Location
Hampton, Md.
First Name
Jason
Vehicle(s)
2018 Mustang GT
What did he determine was worth turning off the detection?
 

wazslow

Well-Known Member
Joined
Oct 10, 2014
Threads
13
Messages
641
Reaction score
547
Location
PA
Vehicle(s)
2016 Mustang GT/CS
If your on pump gas don't turn the boost up much! E85 is a different story.
 
OP
OP
BenjiSayRuh

BenjiSayRuh

Well-Known Member
Joined
Nov 30, 2022
Threads
1
Messages
58
Reaction score
65
Location
Ewing NJ
First Name
Alaric
Vehicle(s)
2016 Mustang GT Premium Performance Pack
What did he determine was worth turning off the detection?
on DECEL after a hard pull, the car would flash the CEL showing misfire then go away.
normal driving, no CEL, no Misfire, smooth idle and driving.

while the CEL was flashing, the car would stumble until it went away.
tuner said that the car will try to save itself while the CEL flashes or stays on.

Did compression test and cylinders were all within the standard range of PSI.

im on pump gas with a BAP and will stay that way. Looking to achieve between 10-11 LBS for next tuning effort.

once i get used to this power level, will install a fuel system and order E85 drums.
 

HKusp

Well-Known Member
Joined
Jul 22, 2021
Threads
36
Messages
1,917
Reaction score
2,398
Location
Hampton, Md.
First Name
Jason
Vehicle(s)
2018 Mustang GT
on DECEL after a hard pull, the car would flash the CEL showing misfire then go away.
normal driving, no CEL, no Misfire, smooth idle and driving.

while the CEL was flashing, the car would stumble until it went away.
tuner said that the car will try to save itself while the CEL flashes or stays on.

Did compression test and cylinders were all within the standard range of PSI.

im on pump gas with a BAP and will stay that way. Looking to achieve between 10-11 LBS for next tuning effort.

once i get used to this power level, will install a fuel system and order E85 drums.
So the car is showing a misfire for a reason, I would imagine. Cars don't fake or falsify scenarios. If it was false knock, you want to take of the issue. If it's a misfire, I don't know how or why the car would sense that and it not be legitimate. I would be careful turning off the protections that are built in to this PCM. It is very capable when allowed to do what it needs to, in order to protect itself from catastrophe. You do what you want, but just be aware. That's all I am saying.
Sponsored

 
 








Top