My experience with Hellion Top Mount..

[StickShiftyFifty]

Just wanted to post a quick journey into my build since i don't post much...
I started off with a 2016 PP1 GT with plans on making power, I always wanted that Whipple whine lol, but as my time passed being a member on this forum I seen a member post a used top mount for under 5k I was like ive never owned a turbo v8 before and cant beat the price, ill send him a lower offer and see if they would take it, figured why not. To my surprise they said yes and i drove my ass to San Diego and picked it up. Called hellion, got an instruction guide and any addition parts i may need and started putting it together. I was intimidated for sure but the instructions were so clear even included photos and their support on IG and on this board was soo great. Found out vbands are a Pain in the rear to get just right, but got it done. Used a BAP and 1050x injectors and car made 740 on e85 i was more than happy. But i was also worried about stock fuel pump shitting out on me so i didn't push her too hard. Well after some saving and waiting for parts i got a dual pump return style fuel system for my car and had her re-tuned yesterday and now she makes good safe power, I just wanna say thank you to all the Mustang6g members for helping me out with questions and parts, I truly love this car its an absolute dream to work on and drive.
The car made 843 hp on 12 psi on e85, we were having some valve float issues the first time we tuned the car so i installed cutouts which really helps but my tuner said im pretty much at the limit of this system due to the two turbos down pipes joining together causing too much turbulence and creating back pressure causing valve float I have attached a dyno graph lemme know what y'all think
Thanks again for everyone's help

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[MKL_DS]

Seems to peak awfully early. It was well on its way to 900+ if it kept making power to 7500 or so.

The drop off doesn't look like float to me, but maybe the graph has all the smoothing in it? Does it hold 12 psi to 7000+?

Either way its a beast and must be a ton of fun.

 

[SolarFlare]

Good numbers. Congrats on getting it all done on your own.

stock manifold or something else?

 

[StickShiftyFifty]

Yes it holds 12 psi almost 12.8 till 7k I could of raised the boost but stock motor with stock manifold

 

[Jordan @ Lethal]

Hell yeah brother! Bada$$ setup. It's great to see the mustang community in action.

 

[SolarFlare]

Yes it holds 12 psi almost 12.8 till 7k I could of raised the boost but stock motor with stock manifold

you’d probably get some nice gains with an 18 manifold or GT350

 

[fmc_smt]

Plus 1 on a mani

 

[gimmie11s]

55s or 62s?

That sure does look like a fun street car.. congrats!

 

[StickShiftyFifty]

62s

 

[erikkire18]

I got the same kit and installed cutouts yesterday, hopefully dyno next friday. 843 wheel is good power on 12lbs

 

[3beeps]

Nice numbers. My tuner said I was having valve float issues as well beyond 12 psi. I did bumper exits, 4 to 1 headers, and valvesprings...I think we're good to go now. But I have the 55mm turbos and GT350 intake manifold.

 

[StickShiftyFifty]

I put cutouts in just before catback to try to help with the back pressure but what my tuner was saying is there just too much exhausts gases moving through one small cross over section. Im also running a phyrometer right at the x section and getting temps of 900 degrees F.
Ill look into intake and valve springs thanks.

 

[StickShiftyFifty]

Upgraded to boss302 intake , valve springs and some fresh timing components
made some good power

 

[HKusp]

She's making some steam!!!
Very nice!!

 

[illtal]

Upgraded to boss302 intake , valve springs and some fresh timing components
made some good power. still 12 PSI right?

looking much better up top, still something going on right at the end, but for the most part it's all cleared up. Did you change out the valve springs?

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