2G Small 16g stock fuel pump & injectors

[Allen2g]

Hello, this has probably been asked and answered but is a small 16g on stock boost, 12 psi? okay to daily with stock pump and injectors, and no tune.
Will be upgrading to an evo9 pump as time comes.

Was also wondering if ill experience anything like fuel/boost cut, the one who sold me the 16g told me he was experience fuel/boost cut with the 16g on his 2g and he said it was due to the 11psi WG actuator that is currently on the 16g. *was thinking it could of been a boost leak

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[Stapl3]

A 16g at 12psi is no different from a 14b at 12psi. Everything should be seamless and fine.

I wouldn't bother with the evo9 pump. A modified 450, which is like 100 bucks, has provided me enough to max out a 37r using corn. It's all 99.9% of the dsms out there need.

 

[FIBA M - EC17PSE]

The flow rsting of a small 16G might be fine, it might just run a little lean, i run hybrid e3 16g and i sometime hot fuelcut myself only in 3rd gesr at 6500rpm though, so i say yes its fine but keep an eye on your Wideband to make sure it is ok,

When you swap pumps you will want an adjustable fuel regulator so keep that in mind as its more cost aswel to lay out

 

[Allen2g]

Thanks you guys, yeah i have no means for really pushing the car. Its just my daily ill be taking to meets, cruise with buddies and maybe a bit of road racing from time to time. I just want to make sure i wont run in to any other issues. Is no tune fine as well? Supporting mods will come in the future, such as injectors, pump, afr, just saving up as of rn due to wanting a tune when i get those mods

 

[FIBA M - EC17PSE]

I currently back on stock ecu and injectors and its fine, i do have other fuel mods like pump and regulator but even those wont be much on an issue if you dont have them

 

[Allen2g]

as money comes, mods will come!
but, sounds good. tysm!!

 

[curt-s]

Hello, this has probably been asked and answered but is a small 16g on stock boost, 12 psi? okay to daily with stock pump and injectors, and no tune.
Will be upgrading to an evo9 pump as time comes.

Was also wondering if ill experience anything like fuel/boost cut, the one who sold me the 16g told me he was experience fuel/boost cut with the 16g on his 2g and he said it was due to the 11psi WG actuator that is currently on the 16g. *was thinking it could of been a boost leak

No problem but no better than a 14b, perhaps even slightly worse due to efficiency at that pressure. But if you dont have a 14b kicking around or are currently not running one, then why not..

As you said, supporting mods and a tuning solution in the cards later, but dont push it before then because the stock 2g maps for afr and timing are not optimal for high pressure.

Also, no, fuel cut wont happen because of a 11psi wastegate and i dont know what would lead somebody to think that unless they did not have proper information sources such as logging, boost gauge vs maf hz (that will show you leaks very well), etc.

 

[Allen2g]

yeah kinda confused me when he said that aha, he mustve had a bad boost leak. & no i currently have a stock t25 with a bit of in and out play so i decided to just upgrade to a 16g. I wont be pushing the 16g, i wont ever tbh, highest psi ill probably go is around 15 and thats when i have like a pump at least. Im currently a broke ass 18yo so atm i cannot afford to break anything major so id like to stay at a reliable psi.

 

[Blinkyblinx9]

You MAY run your stock fuel system through a bit at red line with the 16g. The factory fuel components operate at their upper limit with the stock t25. I know your thinking "but 12psi is 12psi no matter what turbo is making it". The fact is the t25 sucks on our cars was never meant to be used on a 2.0. It simply cant keep up with the engines intake volume at higher rpm. At about 5000rpm or so it starts to loose pressure even without a boost leak. The 16g will not have a problem keeping up therefor you may end up running out of fuel above 5k and leaning out your mixture. Running a rich AFR is responsible for keeping the intake charge temps down so you may end up knocking or worse. This is why I have sat with my evo16 in the garage rebuilt for over 2 months now because I don't have the money for new fuel system components. FYI you can buy evo fuel system parts like a pump and injectors for your DSM cheap on rock auto. They are drop in and will work up to about 18psi. Some of the EVO fuel pumps are sold interchangeably as a DSM stock replacements because it would cost the manufacturer more to make seemingly identical parts with different specs. Injectors would require a re-tune though but at least the evo fuel pump would eliminate one bottleneck in the OE fuel system when running the 16g. Don't forget to rewire your fuel pump if you go that rout and rebuild your turbo if you bought it 2nd hand.

 

[rEclipserGST]

Expect boost creep.

You mentioned "daily". Do maintenance. This site has plenty info. Like the answer to this exact thread.....

 

[Stapl3]

The flow rsting of a small 16G might be fine, it might just run a little lean, i run hybrid e3 16g and i sometime hot fuelcut myself only in 3rd gesr at 6500rpm though, so i say yes its fine but keep an eye on your Wideband to make sure it is ok,

This makes no sense as the airflow is basically the same.

http://www.lilevo.com/mirage/compefficiency.htm

That is a comparison of a 14b to 16g at 15psi. The difference is basically zero. If you're getting fuel cut or going lean, something is wrong.

 

[Allen2g]

You MAY run your stock fuel system through a bit at red line with the 16g. The factory fuel components operate at their upper limit with the stock t25. I know your thinking "but 12psi is 12psi no matter what turbo is making it". The fact is the t25 sucks on our cars was never meant to be used on a 2.0. It simply cant keep up with the engines intake volume at higher rpm. At about 5000rpm or so it starts to loose pressure even without a boost leak. The 16g will not have a problem keeping up therefor you may end up running out of fuel above 5k and leaning out your mixture. Running a rich AFR is responsible for keeping the intake charge temps down so you may end up knocking or worse. This is why I have sat with my evo16 in the garage rebuilt for over 2 months now because I don't have the money for new fuel system components. FYI you can buy evo fuel system parts like a pump and injectors for your DSM cheap on rock auto. They are drop in and will work up to about 18psi. Some of the EVO fuel pumps are sold interchangeably as a DSM stock replacements because it would cost the manufacturer more to make seemingly identical parts with different specs. Injectors would require a re-tune though but at least the evo fuel pump would eliminate one bottleneck in the OE fuel system when running the 16g. Don't forget to rewire your fuel pump if you go that rout and rebuild your turbo if you bought it 2nd hand.

I see, yeaph i stated above im going to upgrade to a evo 9 fuel pump at least. Injectors can come later down the road as you said, ill need a tune when injectors are upgraded.
Is a rewire necessary? Rewire is done for more flow right?
Also the turbo was claimed to have been rebuilt, there is 0 shaftplay.

 

[Vegas Smith]

A walbro 255 and some 550cc injectors would go a long way on that car and you'll be a lot happier. I bet you could track that combo down for $75. I may even have a 255 in the garage I'll never use because I'm not a big enough loser to need a pump that small (jk)

 

[Vegas Smith]

I see, yeaph i stated above im going to upgrade to a evo 9 fuel pump at least. Injectors can come later down the road as you said, ill need a tune when injectors are upgraded.
Is a rewire necessary? Rewire is done for more flow right?
Also the turbo was claimed to have been rebuilt, there is 0 shaftplay.

Just get a 255 and do a rewire which is necessary. You may not need a tune if you get some 55occ but you'll have to search.

 

[Blinkyblinx9]

If you trust the turbo to be rebuilt then awesome. As has already been stated a fuel pump rewire is necessary (no matter what you do with it in my opinion). The factory wiring is not only too small but is old and may have small cracks in the copper strands that further increase resistance. You start drawing more current across those cracked strands with a better fuel pump and it could create some heat which is a potential fire hazard not to mention stressing the fuel pump and reducing its performance. It was the first thing I did to mine even though its of no use to me yet. Its cheap, relatively easy, and gives you something to do now that will be useful later on. Honestly with a small 16g I cant see you easily getting over 18-20 psi of boost so EVO3 parts should be more than enough considering the 16g used in the evo3 did flow a little better. There is really no need to get anything more for that turbo unless you want to run e85.

 

[motomattx]

This makes no sense as the airflow is basically the same.

http://www.lilevo.com/mirage/compefficiency.htm

That is a comparison of a 14b to 16g at 15psi. The difference is basically zero. If you're getting fuel cut or going lean, something is wrong.

Not so, there is a difference in air mass as far as oxygen goes, 15psi is not just 15psi, a 102mm turbo at 15psi is different than a T25 at 15psi, thats why the 16g is good for higher horsepower than the 14b, there are cheap ways to make it work safely, but I wouldnt go saying that there is zero difference in them.

 

[Boomdeeze]

A walbro 255 and some 550cc injectors would go a long way on that car and you'll be a lot happier. I bet you could track that combo down for $75. I may even have a 255 in the garage I'll never use because I'm not a big enough loser to need a pump that small (jk)

If you get a 255, you will need an adjustable fuel pressure regulator as you will overrun the stock one.

 

[Allen2g]

If you get a 255, you will need an adjustable fuel pressure regulator as you will overrun the stock one.

would an afpr be necessary for an evo9 fuel pump?

 

[Boomdeeze]

You should not need an afpr with the evo9 pump as is flows roughly 200lph at 43 psi.

 

[Allen2g]

You should not need an afpr with the evo9 pump as is flows roughly 200lph at 43 psi.

okiess, thank you!

 

[FIBA M - EC17PSE]

This makes no sense as the airflow is basically the same.

http://www.lilevo.com/mirage/compefficiency.htm

That is a comparison of a 14b to 16g at 15psi. The difference is basically zero. If you're getting fuel cut or going lean, something is wrong.

While the small 16g and 14b is close i dont know this exsct data to head the OP is in a 2G there for coming from a T25 so my point is valid. 14B was never mentioned and previous issues from others members or 1G dont count as they adjusted differently from stock so again it voids itsself.

The fuel cut is nothing more then it flows alot more air then it can fuel, nothing is wrong with my car and i know there is nothing wrong its just a case of my hybrid turbo flows a heck of a lot more sir then i can fuel currently but i knew this when i built the turbo to planned specs so its nothing else wrong, lets not start getting people worried over nothing shall we!

 

[Stapl3]

Not so, there is a difference in air mass as far as oxygen goes, 15psi is not just 15psi, a 102mm turbo at 15psi is different than a T25 at 15psi, thats why the 16g is good for higher horsepower than the 14b, there are cheap ways to make it work safely, but I wouldnt go saying that there is zero difference in them.

The bottom third of my link talks about a more efficient head, beyond high ve, then it compared a "57 trim" (the link is old) to a 14b.
Comparing a 102mm to a t25 is so apples to oranges, come on man.

The reason a 16g is better than a 14b is because it can maintain a higher boost level to redline. That's it. Otherwise it might as well be a stock turbo at stock boost. OP is asking about 12psi. 12psi is as boring on a t25 as it is on a 14b and small 16g. It's all the same in real life, lag aside, with only measurable differences. If there's issues beyond all this, it's not the snail's fault.

 

[motomattx]

The bottom third of my link talks about a more efficient head, beyond high ve, then it compared a "57 trim" (the link is old) to a 14b.
Comparing a 102mm to a t25 is so apples to oranges, come on man.

The reason a 16g is better than a 14b is because it can maintain a higher boost level to redline. That's it. Otherwise it might as well be a stock turbo at stock boost. OP is asking about 12psi. 12psi is as boring on a t25 as it is on a 14b and small 16g. It's all the same in real life, lag aside, with only measurable differences. If there's issues beyond all this, it's not the snail's fault.

This is true, because it can move more air! aka its a bigger turbo, 12psi on a T25 vs a 14b sure, those are comparatively small turbos, but when you start getting into 16g territory your talking a significantly better turbo as far as what can be achieved. Here's a decent link:

https://www.dsmtuners.com/threads/difference-in-power-from-14b-to-s16g.353623/

 

[Stapl3]

This is true, because it can move more air! aka its a bigger turbo, 12psi on a T25 vs a 14b sure, those are comparatively small turbos, but when you start getting into 16g territory your talking a significantly better turbo as far as what can be achieved. Here's a decent link:

https://www.dsmtuners.com/threads/difference-in-power-from-14b-to-s16g.353623/

That link shows 14b at absolute max effort vs EVO316g. 21psi.

OP is asking about 12psi.

 

[FIBA M - EC17PSE]

That link shows 14b at absolute max effort vs EVO316g. 21psi.

OP is asking about 12psi.

The OP is also a 2G he also said he came from a T25!!! So ecu setup is different aswel, so your 14B in these comment dont belong here, the 14B fuek setup on a 1G is more aggressive then a 2G ecu so while a 14B might just work in a 2G the 16G wont because of the way it flows higher up top and thats what creates the fuelcut issue