Turbo upgrade.

Don't the heads only lift when pushing above 20-25psi? If I'm not wrong the Lap3 Stage 2.5 tune pushes 18-19 and still makes 500whp which is pretty cool.
All Lap3 tunes target 18~21psi boost (depending on other conditions), with the boost tapering off at the higher RPMs. Ultimately it comes on to timing. High boost at lower timing is going to create less cylinder pressure than high boost with aggressive timing.

Below is a filtered log from my car showing boost tapering off and it's relation to timing advance.
 

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Aren’t ARP bolts considered the Holy Grail for fasteners?
There's a guy on Facebook that will custom machine head studs for the Stinger GT. I've heard they work very well be the main issue for many is installing em. It's a massive labor cost.
 
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Honestly not worth doing bigger turbos until the turbo manifold issue is resolved, it necks down to about 1" so trying to shoving more air through It only causes serious back pressure issues. There are a few of currently working on it. Including me... I'll update possible in the next few weeks.
Yup I have to agree 100% John at Tork has been wrestling with this. I spoke with him last week. He is currently looking at another approach to this, I asked him to upload it to insta and his youtube channel. I'm looking forward to seeing what he. Comes up with.
 
I hit up in 20+ psi all the time, especially when I'm racing. But it's not held long .. just the drags. Haven't had any issues ... as yet. ' Yet '
 

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From interior to exterior to high performance - everything you need for your Stinger awaits you...
I hit up in 20+ psi all the time, especially when I'm racing. But it's not held long .. just the drags. Haven't had any issues ... as yet. ' Yet '
It's not just boost pressure but also the timing advance. What does your timing look like?
 
I hit up in 20+ psi all the time, especially when I'm racing. But it's not held long .. just the drags. Haven't had any issues ... as yet. ' Yet '
So do I, 25-26 lbs, the problem begins with a combination of timing advannent and 25lbs of boost I can't recall the exact timing but it's somewhere in the teens.
 
Yup I have to agree 100% John at Tork has been wrestling with this. I spoke with him last week. He is currently looking at another approach to this, I asked him to upload it to insta and his youtube channel. I'm looking forward to seeing what he. Comes up with.
I've seen his video where he shows how restrictive the manifold/housing combo is, but wasn't aware he was actively working on something.

I'm not normally a fan of swapping out stock turbos for massive ones, but considering ours spool at 1300, something that kicked in 5-700rpm later and unlocked another 75-100 horsepower would be awesome.
 
I've seen his video where he shows how restrictive the manifold/housing combo is, but wasn't aware he was actively working on something.

I'm not normally a fan of swapping out stock turbos for massive ones, but considering ours spool at 1300, something that kicked in 5-700rpm later and unlocked another 75-100 horsepower would be awesome.
 
Yes... yes it would.
 
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From interior to exterior to high performance - everything you need for your Stinger awaits you...
I've seen his video where he shows how restrictive the manifold/housing combo is, but wasn't aware he was actively working on something.

I'm not normally a fan of swapping out stock turbos for massive ones, but considering ours spool at 1300, something that kicked in 5-700rpm later and unlocked another 75-100 horsepower would be awesome.

Thank god someone is working on that problem. I myself am not interested in a big turbo kit.
I cannot wait to see how well hybrids can perform when they aren't hobbled by that stupid manifold. Honestly, if Pure, or TurboKit, had developed it and just increased the unit cost by 1-2k, there would be a ton of hybrid turbo cars out there today
 
Just curious what supporting mods are needed to do an upgraded turbo kit?


Why would anyone one want to? The stock ones are capable of 770hp. IMR has developed a kit that produces numbers around 1300+ $9k... if you insist on doing upgraded turbos you need to replace the manifolds they neck
down to around an inch making bigger turbos useless, you just can't shove anymore air through, than the stock setup can. So IMR'S setup, or build around them. Go catless, big front mount, AFE Blade runner charge pipes, an ECU tune, and TCU tune, denso or HKS plugs and wmi. Kit. Basically what I have. $6k a few more things, jb4, cold air intakes and the snorkels. And mbrp pro series exhaust. Once I do the bullet proof kit, and dyno day I'll bet I'm close to 650whp,
 
Thank god someone is working on that problem. I myself am not interested in a big turbo kit.
I cannot wait to see how well hybrids can perform when they aren't hobbled by that stupid manifold. Honestly, if Pure, or TurboKit, had developed it and just increased the unit cost by 1-2k, there would be a ton of hybrid turbo cars out there today
Tork's manifold video is from March of 2023, and I haven't seen much about the Stinger on their youtube channel, but they did reply to a comment on a Hyundai video saying to expect more Stinger stuff this winter. Would be curious if @Stingabit has any specifics.

Lap 3 makes a very pretty set of manifolds that would probably let hybrids/stuffed stockers do amazing things, but they're only available as part of a $12k turbo kit:
 
Tork's manifold video is from March of 2023, and I haven't seen much about the Stinger on their youtube channel, but they did reply to a comment on a Hyundai video saying to expect more Stinger stuff this winter. Would be curious if @Stingabit has any specifics.

Lap 3 makes a very pretty set of manifolds that would probably let hybrids/stuffed stockers do amazing things, but they're only available as part of a $12k turbo kit:
Tork is like a 1 man army. Unlike bigger shops with a bunch a staff, hes a smaller operation, with a bunch of projects, juggling customers too. The thought of juggling all the stuff he does, I would wanna go postal. Plus its not an easy development

That nice Lap3 unit that you point out, relocates everything, your turbos, hot side, cold side, all your ic piping, primary downpipe etc. It only makes sense for a bigger turbo kit. There is no point in that style of relocation for a hybrid. The whole point of the hybrid is to keep everything in the same place, so you can use all the cheaper mass produced bolt ons

The literal challenge with the manifold/housing is a bit two fold,
1. space is limited, so your bends, or pipe path on the larger manifold, need to be precise, so there is not room for error,
2. everything is one piece into the housing, so that means a mold for casting. A little more trial and error then just fabing up a custom manifold with a talented tig welder.

for perspective, he has to make a custom trick piece for hot side, of both turbo's, and they are both gonna be different. That shit is hard. Add in he has to use his own time and money. I dont see any dentists offering to help fund R&D for trick parts to modify Stingers with.

The Lap3 kit is the easy way out because you have so much freedom in design when you move everything wherever it needs to go. Entirely different ballpark when nothing is allowed to be relocated, you just gotta find a way to make it bigger, and still fit everything 100% stock location around this now bigger part

The hybrid turbo shops like PURE, and TurboKit, 100% understand how trash that manifold/housing is. But they also know, exactly how hard (hard=lots of money spent in R&D) it would be to develop a new one in house, and have absolutely have 0 confidence they could sell enough to make a profit on that R&D investment. Its why Turbokit took the easy way out by 'porting' the manifold section, which im sceptical of, because the manifold diameter is too small for there to be meaningful porting changes, with out compromising wall thickness on the stock manifold.

For a turbo shop, Hybrids are supposed to be a fairly routine part to develop, and part to make. For them, changing all the internals is routine. Its not normal at all to change external shit on a hybrid turbo you develop. Plus you now have a new QC point, that can directly f*ck up fitment. A few bad installs would tank the sales they would be desperate for to make up all the increased R&D cost
 
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It's not just boost pressure but also the timing advance. What does your timing look like?
My Race BEF advances my ignition timing by about 17 degrees. I don't have any shots of it but I think I may still be pulling timing a bit. Terry looking into it.
 
From interior to exterior to high performance - everything you need for your Stinger awaits you...
That nice Lap3 unit that you point out, relocates everything,
Ah I was not aware of that, as I haven't seen their kit installed. I just assumed the manifolds left the turbos in place but attached to a normal housing.

Its why Turbokit took the easy way out by 'porting' the manifold section, which im sceptical of, because the manifold diameter is too small for there to be meaningful porting changes, with out compromising wall thickness on the stock manifold.
Are there any pictures/videos of the ported manifold? I agree that it seems like it would be hard to get meaningful diameter out of it unless they cast the walls 1/2" thick for no reason.

The "easier" custom route to me would be what the Tork video mentions: cut out the restrictive section and weld in a piece of tubing. The "R&D" would be making a jig to bolt the manifold and housing to once you cut them, fixing their relative locations while you reattached them.
 
Ah I was not aware of that, as I haven't seen their kit installed. I just assumed the manifolds left the turbos in place but attached to a normal housing.


Are there any pictures/videos of the ported manifold? I agree that it seems like it would be hard to get meaningful diameter out of it unless they cast the walls 1/2" thick for no reason.

The "easier" custom route to me would be what the Tork video mentions: cut out the restrictive section and weld in a piece of tubing. The "R&D" would be making a jig to bolt the manifold and housing to once you cut them, fixing their relative locations while you reattached them.
There is no elegant way to solve it. The custom jig has the easier R&D, but then you are tied to QC, because everything is handmade.

If I was rich, I would want to take that handmade piece that works, turn into a mold, then have a full casting of the entire piece to reattach, which makes production QC alot easier. But as the posts above state, that starts as a 20K endeavor, before production run costs. Compared to an inter cooler design, or cat back exhaust, the demand is alot smaller, with competition already among other shops offering hybrids.

Plus each shop has its own spec for the housing piece, on how they modified it for the internals upgrade. So just developing a standalone piece that has an improved manifold design, with the stock housing, that anyone could buy, would need further machine work based on who's hybrid you are buying.

As a community, we would need an individual, or, a group, that is willing to lose 100% of the R&D cost, and not make it back. I dont know any small shop willing to do that
 
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