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Car Whore
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Discussion Starter #1
These motors are so new, I am not even sure if anyone can help me out here, but I would like to run a 50-75 shot of nitrous on my car. Does anyone have experience with this on Gen Coupes, and more importantly, on a GDI motor?

Is there anything I should know about the silly ECU's on these cars before venturing down this road? lol

I know the ECU is a major handcuff, which is why I am asking here first :)

Thanks in advance folks! :gc-wmsmiley-this-to
 

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Car Whore
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Discussion Starter #2
I have been looking into a wet shot, which i dont see why it wouldnt work fine.

but I would rather check here first :)
 

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I have a HUGE nitrous background, but not with the Genesis. Even my ZX14 has nitrous. :)

First off, im not familiar with the 3.8, so this may or may not apply.

Unless you can spray the MAF, so the MAF sees the change in air so it can add fuel (like my LS1 Camaro) you need to add fuel somehow. On my bike, I just added a fuel at 100% throttle. So if I go WOT without spraying, its on the rich side. But it takes me less than 2 minutes to swap between my NA map, and my Nitrous Map. If neither of these options are available, you need to spray a wet shot (like my 300ZX I sold lol)

Unless proven otherwise, I would stick with 25% of OEM Crank Hp as the shot to use. That tends to be a safe GENERAL rule of thumb. That being said, I wouldnt hesitate at putting a 50 shot on one. Hell, id probably do 75 or 100 shot on one, but I tend to push my luck :)

On that note, Id highly suggest WOT switch AND a RPM/window switch on a Manual vehicle. That way you can have it shut off just before redline, and it automatically shuts off when you lift to shift, and if happen to bounce off the rev limiter your not spraying.

If you decide to push it up to a 75 or 100 shot, then id also look into 1 step colder plugs.
 

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Car Whore
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Discussion Starter #4
thanks for the input bud! anyone else have input?
 

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I would check on what other direct injection cars are doing, such as the Camaro V6.

The 2013 GC uses a MAP, not a MAF, so location of spray is not as critical. However, a dry shot would not be compensated by the ECU like on a MAF based car.

So likely a 50-75hp wet shot would work. I would be definitely wary of bigger without some way to tune or pull timing.
 

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Car Whore
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Discussion Starter #6
i wouldnt go bigger than a 75 wet shot.

the 2010+ camaro v6 has its own kit thru ZEX, so obviously the DI doesnt affect its ability to be sprayed propery
 

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3.5L TT but wrong body
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I would check on what other direct injection cars are doing, such as the Camaro V6.

The 2013 GC uses a MAP, not a MAF, so location of spray is not as critical. However, a dry shot would not be compensated by the ECU like on a MAF based car.

So likely a 50-75hp wet shot would work. I would be definitely wary of bigger without some way to tune or pull timing.
So Hyundai ditched MAF on the GDI V6? If so, I'd say a factory boosted V6 is right around the corner.
 

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BBoost Me Baby
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I would go for a WOT switch as to avoid any problems.
 

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Car Whore
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Discussion Starter #12
I will hopefully be doing this over the winter, along with sprucing the engine bay too
 

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Dawg I got friends down here on new GC (2013) and one with a 2010 both nitrous 50 Dailey wet shot and 100 track the GDI is only pushing 50 Dailey and 75 track and the GDI whoops um both full bolt ons GDI has no header but neither have cats


Sent from my Autoguide iPhone app
 

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Obsessed
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Wet nitrous setup

kgmdawg84,

Did you ever give the wet shot setup a try this winter? I'm looking into it myself as a way to put some serious increase in power until the turbo route is available for us 2013's.

I've been talking with Matt at Comp Cams, and he said the Zex wet nitrous universal system (Part#82023) would be appropriate and is very popular with the modern GDi guys, and on the 75 shot jet I don't see any reason why it would cause any problems.

Since I'm not at the house right now, I don't have a chance to pull my intake again and examine the arrangement of the intake manifold to try to come up with any potential issues with location of the jet nozzle.

With only a 75 shot, I don't think there should be any problem with timing, either. Even in the chance you go higher, since the '13 has the knock sensors and automatically pulls timing if knock is detected, it shouldn't cause an issue unless it over corrected and pulled too much.

The only issues I can think might be an issue are I don't know what the rating of our stock fuel pump are, will it handle the added demand for the enrichment fuel, and where to tap into the fuel lines at (although this might be solved, since I saw a new aluminum fuel rail being advertised here the other day). Does anyone have the specs of the fuel pump, and an idea of what kind of demand increase this might generate?

I'm very highly considering putting in this order to have it installed when I send off my intake to GS for P/P and coating next month, so it will be ready for the custom tune in June.

What does everyone think about this? Can anyone see any problems with this arrangement? I would love to go the noble, all-engine route ByzKing is taking with his build, but without sponsorship or discounts, I'm looking for cost effective methods of getting good gains while keeping daily drive-ability. At an average retail cost of $540 for the kit, that's cheaper than the tune, and only activates at WOT, which means daily driving will remain stock and not cost anything extra in fuel or nitrous.

Opinions?
 

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Timbit Biter
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Interested in this. Anyone installed nitrous on a 3.8 GDI?
 

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Sleeper!
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With only a 75 shot, I don't think there should be any problem with timing, either. Even in the chance you go higher, since the '13 has the knock sensors and automatically pulls timing if knock is detected, it shouldn't cause an issue unless it over corrected and pulled too much.
You are correct on this part. The car will pull timing automatically if it senses any type of knock.

The only issues I can think might be an issue are I don't know what the rating of our stock fuel pump are, will it handle the added demand for the enrichment fuel, and where to tap into the fuel lines at (although this might be solved, since I saw a new aluminum fuel rail being advertised here the other day). Does anyone have the specs of the fuel pump, and an idea of what kind of demand increase this might generate?
You have to remember how much pressure our fuel lines are under at WOT. I have hit well over 2,000psi at WOT and im not joking. To "tap" the fuel line would be very risky with that high of pressure in the lines. I really haven't looked to see if we can tap into the fuel lines but I will take a look this weekend. The aluminum fuel rails you had seen are for the 2010-2012. Have to remember we have GDI.

What does everyone think about this? Can anyone see any problems with this arrangement? I would love to go the noble, all-engine route ByzKing is taking with his build, but without sponsorship or discounts, I'm looking for cost effective methods of getting good gains while keeping daily drive-ability. At an average retail cost of $540 for the kit, that's cheaper than the tune, and only activates at WOT, which means daily driving will remain stock and not cost anything extra in fuel or nitrous.

Opinions?
I honestly believe you can get away with running a 50 shot, just as Frank mentioned above. I bet you could get away with running a 75 shot as well but you won't be doing that on the $500-600 kit. Nitrous is always the cheaper route for getting really good gains. Also can't forget we are on a 11.5:1 compression ratio.
 

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Obsessed
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I wouldn't take fuel from the rail. Tap the fuel line between the primary fuel pump in the gas tank and the secondary (high pressure) pump on the engine. Between the two, the fuel pressure is much lower. Still a bit higher than most cars, but only a bit, and nothing a fuel pressure regulator can't handle.
 
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