Those that owned both: tuned 15-17GT and 18-19GT

[BCB06GT]

I had this in the general section, but I think this section may give me more answers.

So I am looking at getting my 4th Mustang. I have had a 96GT, 00GT vert, and presently a 2006GT vert. The current one has a Saleen blower with the Supershaker option with only 7.5#s of boost. I have been reading and following threads for a while and know that the 15-17GT are down on torque down low. I have read many times that a tune adds 40+ ft-lbs down low. I drove a 2016GT yesterday and was extremely bummed. What my car does at 2700 rpm, the 15-17GT does at close to 3700-4000rpm. So the question is for guys that have owned both a tuned 15-17GT and a 18-19GT, does the tune on a 15-17 make it equivalent down low to a 18-19GT? IF so, then a 15-17GT is still an option, otherwise I have no choice but the 18-19GT model. For the record, I will not be supercharging or adding boost to the new Mustang - realistically, 500hp at the crank is enough for street power provided it has decent low end grunt.

Thanks in advance for some advice.

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[BmacIL]

I had this in the general section, but I think this section may give me more answers.

So I am looking at getting my 4th Mustang. I have had a 96GT, 00GT vert, and presently a 2006GT vert. The current one has a Saleen blower with the Supershaker option with only 7.5#s of boost. I have been reading and following threads for a while and know that the 15-17GT are down on torque down low. I have read many times that a tune adds 40+ ft-lbs down low. I drove a 2016GT yesterday and was extremely bummed. What my car does at 2700 rpm, the 15-17GT does at close to 3700-4000rpm. So the question is for guys that have owned both a tuned 15-17GT and a 18-19GT, does the tune on a 15-17 make it equivalent down low to a 18-19GT? IF so, then a 15-17GT is still an option, otherwise I have no choice but the 18-19GT model. For the record, I will not be supercharging or adding boost to the new Mustang - realistically, 500hp at the crank is enough for street power provided it has decent low end grunt.

Thanks in advance for some advice.

Did you drive a 2016 with or without the performance package? That makes a tremendous difference to how it feels with those 3.73 gears. The 2018+ manual has overall longer trans ratios, so it feels a little less torquey. The A10 is where it's at if you get a 2018-2019.

FWIW, on 93, I'm making 423 whp, which is near as makes no difference, 500 crank HP. With a flex tune in a couple months, it'll be in the 520-525 crank HP range.

 

[BCB06GT]

It did not have the 3.73s but 3.31 to 3.73 isn’t that dramatic. My 2000 went from 3.27 to 3.73 and it was decent. I am looking over some dyno charts from stock 15-17, tuned 15-17, 18-19 and then mine. Based on what I have seen so far, the 2018-19 still have equal or a little more torque compared to a tuned 15-17.

 

[devin2589]

i also went from an 06 saleen setup at 11psi to a 2019. one thing i'll say is that these motors like to rev to make power. i keep missing that instant tq at 2000 rpms. mine is full bolt on and having a set of 4.56 gears installed in a couple days. should help give me that low end that i'm missing. probably be what you're looking for.

 

[BmacIL]

It did not have the 3.73s but 3.31 to 3.73 isn’t that dramatic. My 2000 went from 3.27 to 3.73 and it was decent. I am looking over some dyno charts from stock 15-17, tuned 15-17, 18-19 and then mine. Based on what I have seen so far, the 2018-19 still have equal or a little more torque compared to a tuned 15-17.

I have a 3.31 car and have driven several 2015-2017 3.73. It's a quite noticeable difference.

 

[Notagain]

I had a 2016 6 speed auto CJ mani X pipe and Roush axle back with 3.55 gears tuned by AED on E85.That thing was a monster 3k to 8k it was an absolute riot. 8k rpm shifts are addicting!!

Now my 2018 A10 is bone stock so far with 3.15 gears and it feel every bit as fast at that previous CJ setup.
Best I can say is the A10 hype is real and the higher compression Im sure makes a difference below 3k for TQ.

Plan to get a JLT old air intake (Already have MAK cat deletes, and X pipe) prolly go PBD Tune this time around.

Im debating on doing the circle D converter for the 10 speed that was just released or adding 3.73 gears that I have sitting. Steedas Silver Bullet AllMotor car is posting sub 10.5 sec times with the converter and 3.15 gears which is what my car came with stock.

Go drive a 10 speed 2018+ Car then your decision will be easy........ LOL!!

 

[BCB06GT]

I have concluded a 15-17 is not worth getting, even tuned. The expense to make it a bolt on to get what the 18-19 has is a waste of money. I will drive an auto just to check out the 10 speed, but rowing the gears is part of the fun. Been in a manual for 30+ years,

 

[Notagain]

Do yourself a Yuuuuuuuuge favor and for the love of god dont test drive an A10 car in only normal mode.

Use Sport and Track. Each mode setting is quite different in the A10.

Also it is mandatory to find a few ramps that merge on to interstate.

Seriously the A10 in sport or track mode kicks ass.

The hype is real.

 

[BmacIL]

I have concluded a 15-17 is not worth getting, even tuned. The expense to make it a bolt on to get what the 18-19 has is a waste of money. I will drive an auto just to check out the 10 speed, but rowing the gears is part of the fun. Been in a manual for 30+ years,

2018 manifold + CAI + tune and you're making the same power (420 whp). That's about $1000 for everything. $1000 for 40 whp is pretty good value. Add LU47 injectors to run E85, and you're up at 440-445 whp.

The 2018 manual is just not as fun with that ratio spread it has (4th is 1:1 now, whereas 5th is 1:1 for the 15-17). The A10 is the reason to get an 18 over a 15-17, as it is much quicker.

 

[AlmostFamous]

I have concluded a 15-17 is not worth getting, even tuned. The expense to make it a bolt on to get what the 18-19 has is a waste of money. I will drive an auto just to check out the 10 speed, but rowing the gears is part of the fun. Been in a manual for 30+ years,

2018 manifold + CAI + tune and you're making the same power (420 whp). That's about $1000 for everything. $1000 for 40 whp is pretty good value. Add LU47 injectors to run E85, and you're up at 440-445 whp.

18+ GT IM and a E85 tune (larger fuel injectors) is all you need to outrun a stock 2018+ GT. Plus, with all the bbq tick issues, warranted or not, has made me hesitant with ever wanting an 2018+ GT.

 

[Notagain]

No just No.

Same mods on a 2018 with an A10 is where its at.
12:1 compression they seriously need E85 with that compression too IMO.

Once snow melts mine will be on E85.

Lastly ignore all the youtube dildos whining about OMGBBQTICK!!

Thats blown out of proportion just like well lets see...

MT82 issues
GT350 oil consumption issues
Oilpump gears breaking issues
Gen3 engine tick issues

Its all the youtube dildos whining.

Im not saying it doesnt happen but not a chance in hell it would detur me from buying a 2018 gen3 car or a GT350.

 

[Bluemustang]

BBQ Tick. Sorry but I wouldn't trade my 15 in for an 18 no way no how. Not with the engine issues that have been widely reported on here. I'll give up a little power and have the tranny not be as good for reliability I am confident in.

 

[EFI]

I have concluded a 15-17 is not worth getting, even tuned. The expense to make it a bolt on to get what the 18-19 has is a waste of money.

How do you figure?

A 2018 is gotta be several thousand more than a low mileage 2016 or 2017, and for 1/3rd of that price they put out just as much power. With the better gearing of the D5 MT82 and you're just as fast as an 18. Drop the entire 3-4k difference and you'll be leaving the 18 in the dust (albeit without warranty if that's your thing).

Now as others mentioned, the A10 is a whole nother ballgame and a gamechanger between the two vehicles. But seeing as how you're sticking with a manual, it's no comparison.

 

[Notagain]

A10 is theeeeeee reason to buy a 2018.

Mod for mod 2018 wins so the mod a gen2 to keep up with a 2018 is absolutely silly and pointless.

But but but what if the 2018 was modded too.

Manual vs. Manual sure pick whatever.

But then manual vs manual all other mods being = Gen3 still wins LOL!


Unless you are running a roadcourse sure go buy a manual.

Want to be fast at the drag strip? Buy an A10 car.

 

[EFI]

Mod for mod 2018 wins so the mod a gen2 to keep up with a 2018 is absolutely silly and pointless.
But but but what if the 2018 was modded too.

Of course mod for mod the 18 wins, and yes you can mod the 18 to make it faster than a similarly modded 15-17.

But the 18 also costs several thousand dollars more than a 15-17, so in the end bang for the buck is in favor of the Gen 2.

Spending 27k on a low mileage 17 with 3k in mods will still be cheaper and faster than a bone stock brand new 18.

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