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I don't think anyone knows the specs on the fuel system. My best guess would be no. I also was probing for some details on the turbo like who/what/where its produced. Really, PSI means shit and it completely comes down to learning to read a flow chart. So, i'm assuming Hyundai went off the stock turbo.

Either way, I can't wait to start tinkering on one.
 

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oi?? the turbo is going to be pushing out 18psi stock. The block will probably be good for more than that.

Also, the fuel WILL flow for 18lbs on the turbo since that is what it is at STOCK.

If you were to figure out a way to say, 20psi, you would probably also be fine since the fuel maps are related to how much pressure the MAP will see. I wouldn't go any further than 20psi, even figuring that out may prove tricky with the new fangled WGA setup..

The reasoning for Hyundai choosing the specific turbo and specific pressure to run at probably took quite a while to decide. I'd only be able to assume the turbo is running near its 'sweet' spot but bumping up the pressure and adjusting the fuel maps (most likely pulling fuel for the most part) would yield in a significant bump in power output.
 

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im curious to see the numbers it makes on 15-18 psi on 91 oct, someone should dyno this thing.




and im sure it can handle 18 psi, its a small turbo, the fuel system should have some leway, if not then im sure something will come out to help
 

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ok, i guess i'd like to see where you see anywhere that the turbo is pushing 8lbs of boost in the stock configuration as a MAX Psi..

OEM manufacturers custom pick a turbo to run at peak efficiency, 8psi sounds really low to me. Judging by your question, I would assume that your information might not be correct.

Even IF the turbo pushed 8psi stock and could go up to 18psi (even though reviews all say 18lbs..) that wouldn't mean the block would handle 18lbs of boost..

Motor Trend:
"The Veloster Turbo's power comes via Hyundai's direct-injected, 1.6-liter I-4 fitted with a twin-scroll turbocharger with a max 18 psi of boost, pumping out 201 horsepower and 195 lb-ft, and it drinks regular unleaded."

Inside Line:
"Hyundai's new Gamma engine is the key, and it hides several increasingly familiar tricks up its 1.6-liter sleeves. Intake and exhaust cam timing is independently variable, and gasoline enters the picture via direct injection, which allows a 9.5:1 compression ratio despite a force feeding in the form of 18 psi of turbo boost."

There are a couple more if you would like me to find them.

Before we go any further, when a review says a MAX boost of 18psi, they mean what the car pushes, they wouldn't list the maximum amount of boost that the turbo will go up to without becoming super inefficient.
 
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Keep in mind, like other modern turbo FWD cars, the boost is probably electronically limited in first and second gear to reduce / eliminate torque steer. 18psi is probably what it runs in higher gears.
 

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agreed ^^^ but none the less, the turbo is pushing 18lbs of boost in Stock form, meaning that the OPs question is pretty much answered as to the fact that the car IS running 18lbs of boost already so the stock block and fuel system CAN support it.

What will be nice and hopefully somewhat easy to crak is pushing higher boost pressures in gears 1 and 2 with some nicer tires.

I heard rumor that is does use a Electronic wastegate, but based on the PDFs I was viewing last night FROM hyundai, it still looks like a simple Internal WGA, but may be electronically controlled beyond that (more like an EBC)
 

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oh really, I also heard it was 8psi. Can't recall the source. I remember hearing the block was tested to handle 18psi, but was at 8psi stock. 8psi sure sounds like baby boost, but then again it all depends on the application.
 

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oh really, I also heard it was 8psi. Can't recall the source. I remember hearing the block was tested to handle 18psi, but was at 8psi stock. 8psi sure sounds like baby boost, but then again it all depends on the application.
8psi................on a PTE 6262!!!! man i miss that turbo.............sigh
 

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I think its running 10-11 psi Stock...
8 PSI is to low and espically running 200HP im Aiming towards 10-11psi

The Stock Genesis Runs anywhere from 10-14psi Stock and it actually fluctuates and is not consistant at WOT...

Im wondering if the Turbo V will be the same:)
 

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Discussion Starter · #12 ·
Yeah I can't remember the source of the 8psi stock now either. But everywhere that I saw 18psi, it said the block would hold up to that. Sorry for the misunderstanding here lol. I've already purchased mine, just waiting for it to come in. Guess I will find out when its here lol. Thanks for all the info though guys!€ :)
 

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8psi................on a PTE 6262!!!! man i miss that turbo.............sigh
I had a 6262 on my first supra, It was at 20psi and killed the automatic tranny in a week haha. I loved that turbo but I had a ton of problems with the seals. It was about a month old and it started burning oil at 20psi. PT rebuilt it and it blew like 4 months down the road again. I think I just have bad luck.. no one else seems to have that problem.
 

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you wouldn't be able to control the fluctuation since it would be electronically controlled. you especially wouldn't be able to control it with a MBC. Even if you tried it with a EBC, the computer would probably adjust to compensate because the ECU monitors the MAP sensor also.

again, 8lbs on a stock turbo of that size seems very low and if all the big media guys are reporting 18lbs, I'm guessing it came from somewhere reliable.

Since I can't find a single source that mentions 8lbs and it doesn't make sense for anywhere to say 'the block will handle 18lbs' I can't comment further.

Hyundai would not openly announce that their block will 'handle' 18lbs of boost since it would be just SILLY.
 

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I looked through the long PDF that was put on ***** and it looks like it DOES have a convential style WGA but there must be something inline (like an EBC) that controls the boost. This would make it much easier to remove but would probably throw some sort of code, throwing the car into a 'limp' mode.
 

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well, in the case of this car being electronically controlled the Pros would be wheel spin and torque steer in the lower gears.

What happens is the electronically controlled WGA would open at say 8lbs in first gear, 10 in second because the computer would tell it to bleed off any further pressure. Higher gears would end up seeing more boost (like the 18lb max) since you would already be going at speed and not need to worry much about torque steer/wheel hop/tire spin.

A lot of people with a bigger turbo that race the car will setup something similar (boost by gear) which bleeds off boost in the lower gears to keep the car gripped to the track instead of just sitting there spinning, while in 2nd gear or 3rd gear they would be at 30psi.

Conventional really has no benefit that I could think of over the electronic setup since you can tailor the electronic setup to what you want the car to behave like.

Some reasons 'tuners' would like to get around how the EBC/EWGA works would be:
when people upgrade to better tires (which wouldn't be as prone to tire spin with more power)
wanting more fun factor regardless of tire spin (you can play with the throttle to resist tire spin and torque steer)
if someone were to swap to a big turbo, there would be more lag, so less need for the boost to be limited in certain areas.

I wouldn't really like to ever 'limit' how the car electronically controls the boost but maybe just bump up the boost thresh-hold in each gear by a couple of pounds. This may be as easy as adding an inline boost controller (between w/e controls the boost and the WGA) or modifying the voltage that the MAP sends the computer.
 
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If the boost is electronically controlled, most or some turbocharged cars come stock with a boost selenoid from the factory that controls the boost. Then again it could be just as easy as the stock wastegate actuator is made to hold boost at 18 psi. Whether the car comes stock at 8 psi or 18 psi, as long as it's 201 hp is all I care. 18 psi is a little high for a car that only has 201 hp? At 18 psi, I'm expecting like 230 hp at least.
 
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