2.5L tuning options and performance

[kielbasa]

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hi,

I've been trying to spot a thread covering 2.5L engine, but I didn't find any. There is one about 2.0 mods, but none about 2.5L engine. Is it so unpopular or I simply cannot find it?
If there's someone who owns this car, I'd be happy to hear what can we get with the Ecu tune only, and what's needed to get close to 400KM i.e.
I do know we lose sound and 2 cylinders, but I'm still curious how tuned 2.5L can compare to 3.3 performance and mpg-wise.
2.5L seems to be more economical, with fewer maintenance costs in the long run (I presume..)

thanks

 

[Snicklefritz]

I think that the engine is the same, just the liter and hp capacity was boosted. so any ecu for the 2.0l should be suitable for the 2.5l. I have a 2.0l but have never looked into modifying it as I prefer stock. the reason why there are precious few threads about the 2.5l is because it is new. back in the day I read about modified 2.0l, with the most modified car being in germany iirc, it's been a while. I'd put you onto the forum member there if I could remember who it was, but that would probably not get you anything because Ima thinking they haven't been active on the forum for years anyway.

 

[Volfy]

Actually, the 2.5T belongs to Hyundai's Smartstream engine family. It shares more similarities with the 3.5T than with the 2.0T (which belongs to the older Theta II family). Biggest difference is the Smartstream engine has both GDI and MPI, which basically renders catch cans unnecessary. The boost pressure and manifold pressure sensor connectors are also different, so kits like the JB4 are not interchangeable with the 2.0T.

You don't hear much about owners modifying 2.5T mostly because there are likely a lot less of them sold compared to even the 2.0T Stinger. Not because it's a bad choice, but because of the supply chain issues and dealers not getting too many cars overall. Besides, there has been only model year since 2022 intro.

I really wanted the 2.5T when I bought my 2.0T, but I knew at the time prices would soon rise RAPIDLY. If I had waited, there was no way I could buy a 2.5T at anywhere close to how much I paid for my 2.0T.

 

[G70LEbyAdoom]

hi,

I've been trying to spot a thread covering 2.5L engine, but I didn't find any. There is one about 2.0 mods, but none about 2.5L engine. Is it so unpopular or I simply cannot find it?
If there's someone who owns this car, I'd be happy to hear what can we get with the Ecu tune only, and what's needed to get close to 400KM i.e.
I do know we lose sound and 2 cylinders, but I'm still curious how tuned 2.5L can compare to 3.3 performance and mpg-wise.
2.5L seems to be more economical, with fewer maintenance costs in the long run (I presume..)

thanks

If you want more info on moding the 2.5, you should look at the sonata N line pages, and maybe the K5, as you will probably get better answers there.

 

[Daniel @ K8 Stinger Store]

Hi kielbasa,

There are plenty of exterior, interior, and performance mods for the 2.5T.

While performance mods may be a bit more limited, you can still boost your power numbers with ease.

I would suggest checking out the Jun Bl Exhaust, JB4 Tune, and Add W1 Catch Can which will give you a good start.

Feel free to reach out if you have any questions or if you would like a discount on your order!

All the best,
Daniel​

 

[kielbasa]

Thanks guys.
According to what Daniel has just posted, we can achieve 440hp and 520Nm...that's a hell of a lot.
I'm only wondering if that's just after upgrading the exhaust and ECU only or we need something more that is not listed here ??
I'd be really interested to see 0-62 times on this car..

 

[kielbasa]

Is there anyone who owns 2.5L Stinger here?

 

[G70LEbyAdoom]

Is there anyone who owns 2.5L Stinger here?

They are far and few in between.

 

[kielbasa]

Maybe those few could tell us a few words

 

[Volfy]

If the 2.5T is what you want, instead of waiting to hear what other owners have done, why not go forth and blaze your own path?

Other than the engine, the rest of the car is shared with the rest of the Stinger models. Even for engine enhancement, the available methods are all similar to 2.0T or 3.3T.

I do know another driver in town here that owns a 2022 Stinger 2.5T. Met him at the local AutoX, where we ran our Stingers last season. He has since bought a Veloster N and switched to running that at the AutoX. He kept the 2.5T as a daily driver, and AFAIK it remains basically stock.

 

[kielbasa]

I created this thread to gain more insight into this specific engine. I'm having a plan of buying this car, but it won't happen in the upcoming days for sure. At the end of the year supposedly. So I'm just curious.. what are the differences vs 2.0 (as far as I know, a lot of mods are needed to take 2.0 to a low 5s 0-60), and what can be done, with what costs and results. Just that. I will blaze my own path but if someone did it already, I'd be happy to hear about his experience.

 

[Terry@BMS]

We have a JB4 for the 2.5t, works great!

 

[kielbasa]

Yes, I saw this, thanks. The promises look good but

"• Power gains of up to 100hp and 100tq to the wheels on a stock vehicle
• Improves 0-60 times and 1/4 mile times"

what does 'up to' and 'improves' exactly mean? Any further mods like injectors, turbo, IC or downpipe are not needed at all to gain 100whp??
Only that? If yes, that's a huge difference in comparison to 2.0 version, where even the intake was a huge restriction.
It would be great to see some 0-62 or 60-120 times too.

 

[Terry@BMS]

It means the actual gains depend on the fuel used, mods, dyno conditions, etc.

 

[kielbasa]

Ok, so now we already know that other hardware modifications are necessary, but what exact mods need to be done to gain that claimed 100hp with jb4 ??

 

[Daniel @ K8 Stinger Store]

Thanks guys.
According to what Daniel has just posted, we can achieve 440hp and 520Nm...that's a hell of a lot.
I'm only wondering if that's just after upgrading the exhaust and ECU only or we need something more that is not listed here ??
I'd be really interested to see 0-62 times on this car..

The Jb4 is a piggyback not an ecu tune. It easily is installed and can be quickly removed. More performance parts are in development but it will take a while before hitting the market. Your fuel choice will also heavily impact your performance potential.

 

[NYBIOMED]

I have the 2.5T AWD with the JB4 piggyback, love the combo. There’s not too much else out there without dropping serious coin. I have access to Ethanol, so I can use the JB4s highest MAP. She’s quicker than stock, but I don’t think quite I’m down to a flat 5sec 0-60. I don’t have a draggy or anything to really do a proper 0-60 run. I drive 25k miles a year, so the 3.3TT wasn’t the wisest choice as a DD for myself, I had to be a bit responsible to my business- as I generally avg around 27MPG.

 

[kielbasa]

Thanks, so what power You're approximately having now? But it looks like it still remains quick while the mpg stays on a very good level too.
Even a low 5s is great, and still without any mods, as I understand.
BTW - do You know how many 2.5L have been produced so far in general? Can we find this data anywhere?

 

[RKA123]

Thanks, so what power You're approximately having now? But it looks like it still remains quick while the mpg stays on a very good level too.
Even a low 5s is great, and still without any mods, as I understand.
BTW - do You know how many 2.5L have been produced so far in general? Can we find this data anywhere?

KIA only reported 7,809 Stinger sales in 2022 in the USA (down from 13,517 in 2021 where the 2.5T didn't really exist). If we're being generous we can say 50% of those sales in 2022 are the 2.5T/GT-Line model which would roughly total about 3,900 Stingers with the 2.5T engine. As stated above Stinger 2.5T owners will be few and far between compared to 3.3T and 2.0T owners.

However, the 2.5T engine is shared with quite a few Hyundai/KIA/Genesis models so availability of power train parts shouldn't be an issue. I just wouldn't expect a huge aftermarket for Stinger 2.5T owners as the market probably isn't there to support it.

For the record as well i'm quite happy with my Stinger 2.5T for a daily commuter car. It has more than enough power and most importantly I can average 25-27MPG quite easily with tons of city driving resulting in about a 400 mile range. I would not purchase a 2.5T car specifically to mod to go fast in a straight line as the 3.3T models are still quite a bit faster and have way more aftermarket support.

 

[kielbasa]

RKA123, thanks!
It's a huge difference in mpg. A friend of mine who owns a 3.3 cannot get better than a 17mpg average.
But most of the aftermarket support is the accessories and body parts shared between the models, so what exactly do You have in mind?