18+ GT Performance Pack Update

[Mustangpursuit]

At least this one lets you retain the engine cover and strut tower braces if you prefer that look. Also allowed for emissions for those in California.

Still not seeing it posted under power packs, just this link and the title does not say much as it is a "power pack" I know part is more like a shoot off of 2015-27 Power Pack 2 with B version.

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[Erratikmind]

Levitown Ford is looking into possible group buy for better price. If interested, go to:

https://www.mustang6g.com/forums/threads/18-gt-performance-tune-pac.137936/

Thank you!

 

[Wittbrij]

Correcting speedometer for rear end ratio change I am guessing.

I went from 3.55 to 4.09, speedo was correct. I did change the gear ratio in forscan, I don't know that did anything.

 

[Vstang2]

You think something like the stock manifold being ported would be ok with this tune or require a custom tune? Just looking at what could be a supporting mod that wouldnt require buying a custom tune if I went with this kit.

 

[GreenS550]

I can see how this mod would be great for the Manual transmission. That low torque would make you Bullitt or GT much more fun on a daily basis.
I don't know how much value it would have on the A10
I'm out as I just recently bought the Flex Fuel Lund tune for my SCTX4. Have to wait for better weather to convert to E85.

 

[SDAMike]

You think something like the stock manifold being ported would be ok with this tune or require a custom tune? Just looking at what could be a supporting mod that wouldnt require buying a custom tune if I went with this kit.

I was wondering the same thing, It is one of the only other things I was thinking of doing. FWIW I had been told by another member on here that the ported IM worked fine on the factory tune.

 

[TRPCANA]

I was wondering the same thing, It is one of the only other things I was thinking of doing. FWIW I had been told by another member on here that the ported IM worked fine on the factory tune.

I ran a ported stock manifold on a lund tuned 2018. I did not get a retune for the manifold, in reality your adding MAYBE 5rwhp if the car was already equipped with the 2018 manifold stock. I didnt notice any difference in performance either. My vote is that on 2018 and up cars youd be just fine but dont expect significant gains, or anything you'd feel.

 

[SDAMike]

I ran a ported stock manifold on a lund tuned 2018. I did not get a retune for the manifold, in reality your adding MAYBE 5rwhp if the car was already equipped with the 2018 manifold stock. I didnt notice any difference in performance either. My vote is that on 2018 and up cars youd be just fine but dont expect significant gains, or anything you'd feel.

Cool thats good to know. I wasnt expecting mind blowing results, just curious if it would be ok.

 

[AZ18yote]

Cool thats good to know. I wasnt expecting mind blowing results, just curious if it would be ok.

You'll get more from the ported mani if going FI and keeping it. But ya 5-7whp NA and no additional tune required.

 

[2018GT]

So I’m wondering if the Bullitt throttle body makes any difference. It has to have the adapter to taper down to the smaller opening... so does it really do anything for increasing hp?

 

[Schwerin]

So I’m wondering if the Bullitt throttle body makes any difference. It has to have the adapter to taper down to the smaller opening... so does it really do anything for increasing hp?

Depends on the stock size. The original TB may not be as wide as the IM opening. It also may not need teh adapter to taper down but for the screws to line up.

 

[2018GT]

Depends on the stock size. The original TB may not be as wide as the IM opening. It also may not need teh adapter to taper down but for the screws to line up.

You might be right. My understanding is that the stock 2018 TB is 80 mm and the Bullitt is 87 mm. So 7mm wider diameter.

 

[Hivel]

You might be right. My understanding is that the stock 2018 TB is 80 mm and the Bullitt is 87 mm. So 7mm wider diameter.

The Bullit has the GT350 manifold. So, it doesn’t need the adapter to convert the 80mm diameter 2018 manifold to the 87mm “roval” throttle body.

Cheers,

 

[Mrzero]

It's interesting that ford advertises the peak gains of 19 hp @ 6500 rpm and 18 tq @ 4500 rpm, when our cars make peak hp @ 7000 rpm and tq @ 4600 rpm respectively.

 

[FruityJudy]

It's interesting that ford advertises the peak gains of 19 hp @ 6500 rpm and 18 tq @ 4500 rpm, when our cars make peak hp @ 7000 rpm and tq @ 4600 rpm respectively.

Because at those rpms the hp and torque spread was the biggest

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