Is 20 psi possible with stock smic?

[DROPthatCLUTCH]

Possible with a SAFC2 tune?
Or not?

 

[gusu]

13g, 14b and t-28 turbos yes, you could also with a 16g but honestly by then you should look at a cheap Intercooler at least.

 

[H4G64T]

The boost pressure doesn't matter as much as what your turbo flows at 20 PSI. I would put the stocker at right around 400-450 CFMs on a 2G, probably close to the same on a 1G.

 

[Hubbell91Tsi]

Yeah its very possible i ran 29psi on my stock sidemount.

 

[LiquidX]

Sure you can run "20psi" to it but CFM rate is what matters. The question you need to ask yourself is
"what psi wil I heatsoak the SMIC at". You could heat soak it at 16 psi on the t25 or 5 psi on a 6262.

 

[DROPthatCLUTCH]

I'm just worried about getting heatsoaked and my IATs going through the roof..
Like, I'm not racing or anything, it's my DD... Or, it's supposed to be. I seem to have 'er in my garage most of the time.

But anyways, we'll see how it tunes. I'll probably just run 18 until i get a cheap front mount.

Sure you can run "20psi" to it but CFM rate is what matters. The question you need to ask yourself is
"what psi wil I heatsoak the SMIC at". You could heat soak it at 16 psi on the t25 or 5 psi on a 6262.

So what psi will I heatsoak the SMIC with an e316g?
Remember, I'm not racing! Just a pull here and there, Red lights and shit.

 

[LiquidX]

Do a pull and see what the temperature is. Do another pull and see if it stays the same or it's getting much hotter. You can also hold the pipe and see how hot it is compared to your first pull.

 

[tkelly27]

It will heat soak. Logged with an IAT, 14b @ 20psi, IAT's shoot up after first gear. Towards the end of 2nd gear it would have been better without an IC. Seems that when it heat soaks it puts heat back into the charge should the compressor outlet temps ever drop below the IC temp. The only thing that kept that car together was the meth kit.

In addition to CFM, boost pressure and turbo efficiency come into the equation. If you push a small turbo you'll be out of the efficiency curves and driving the temperatures up. 300 CFM at 350 degrees is a lot different than 300 CFM at 150 degrees.

Tout = Tin + ((Tin x [-1+(Pout/Pin)0.263])/efficiency)

http://www.gnttype.org/techarea/turbo/turboflow.html

Go ahead and try it. In my opinion you may as well get rid of it and run methanol if you won't run a front mount. Why you would not run a fmic is beyond me. You can also pick up an upgraded SMIC which will handle a 16g pretty well. Some people will say use the supra unit, but there should be plenty of aftermarket ones floating out there for a decent price.

 

[DROPthatCLUTCH]

Oh, I am gonna be running a FM. Just not right away.

Just spent a bunch of money, now my gf's bday is coming up. So I gotta watch my money.

I'll have a FM by august.

 

[JusMX141]

So what psi will I heatsoak the SMIC with an e316g?

There is no set number for this. It depends on boost pressure, ambient air temps, tune, etc. Based on that fact, this thread is borderline bench racing....but will remain open for the time being based on some informative content.

If you're asking will the intercooler hold 20psi of pressure, then the answer is yes.

Let's try to keep this thread from turning into a "how much boost can the stock sidemount handle with ten different turbos at 52 different boost levels" type of thread....especially if you'll have a FMIC in two months.

 

[TurBoneRed]

I'm just worried about getting heatsoaked and my IATs going through the roof..
Like, I'm not racing or anything, it's my DD... Or, it's supposed to be. I seem to have 'er in my garage most of the time.

But anyways, we'll see how it tunes. I'll probably just run 18 until i get a cheap front mount.



So what psi will I heatsoak the SMIC with an e316g?
Remember, I'm not racing! Just a pull here and there, Red lights and shit.

I would start heat soaking very bad after the car fully warmed up with my evo3 16g, anything anything over 10 psi would not register much on the butt dyno, it felt strong before it warmed up fully but after that it didnt pull hard anymore. This was in 110 degree texas heat though.

 

[RadDsm]

Use E85 or water/meth and you can do it on the stock sidemount.

 

[69_luv]

Do a pull and see what the temperature is. Do another pull and see if it stays the same or it's getting much hotter. You can also hold the pipe and see how hot it is compared to your first pull.

You can hold or touch your j-pipe after a run? Heck I can't touch anything under my hood after driving...
I tried to change a vac line at the parts store yesterday in the parking lot and damn near burned my hands

If your worried about heat soaking then chances are you probably are. Upgrade to a bigger side mount, or FMIC and then no worries.

 

[LiquidX]

You can hold or touch your j-pipe after a run? Heck I can't touch anything under my hood after driving...
I tried to change a vac line at the parts store yesterday in the parking lot and damn near burned my hands

If your worried about heat soaking then chances are you probably are. Upgrade to a bigger side mount, or FMIC and then no worries.

1. POST intercooler is where you would want to test the temperature changes as after the IC is where the air should be cooler than the pre IC.

2. Other factors will affect heat soaking of miscellaneous parts. An inadequate cooling system for example will heat everything up.

I used to be able to hold my hand on my intake manifold after removing the FIAV (coolant lines) and since I put on some crappy slim fans everything heats up too much to touch.

A vented hood will help greatly with radiant heat onto parts as well. Instead of heat being trapped under the hood, it will be able to escape, cooling the engine bay temps.

 

[DJ23GSX]

I was heatsoaking my stock sidemount with the 14b around 16-17psi. This was with hardly any boost leaks though. If you have any decent sized boost leaks you will probly heatsoak at a lower psi because the turbo is working harder to achieve your set boost because it has to make up for the leaks in the system. Also when you datalog intake air temps and your using a 1g or 2g maf its getting those temp readings from the maf not anywhere after the intercooler so you won't be able to tell if you are heatsoaking by watching those. If you are running an open air filter that is sucking in hot engine air you might want to build a cold air box around it. On my last dsm I noticed a big difference in intake temps after building the box around it. It actually helped a bit in my battle with heatsoak to. You will know when you are heatsoaked because you will start seeing knock that you won't be able to tune out with the safc.

 

[DROPthatCLUTCH]

There is no set number for this. It depends on boost pressure, ambient air temps, tune, etc. Based on that fact, this thread is borderline bench racing....but will remain open for the time being based on some informative content.

If you're asking will the intercooler hold 20psi of pressure, then the answer is yes.

Let's try to keep this thread from turning into a "how much boost can the stock sidemount handle with ten different turbos at 52 different boost levels" type of thread....especially if you'll have a FMIC in two months.

Ya, my bad I guess, "what psi will the smic heat soak at?" is more of what I was looking for.

Thanks for all the replies and info guys.

Now I'm wondering if I should just hold off on installing my 680's and just run a low boost tune with my 450's until I get my FMIC.. Hmmm.

 

[JusMX141]

I would. There's nothing the 680's are going to do for you on an undersized intercooler.

 

[DROPthatCLUTCH]

Alright sounds like a plan.

 

[DJ23GSX]

680's and just an safc don't alway play nice together. I had problems with too much timing causing knock with my 680's because I had to lean the safc out so much it was putting the ecu in a more aggressive timing map. I ended up getting a custom eprom chip burnt to compensate for the 680's and it made tuning so much easier.



On a side note are you still running the 1g maf? I don't see anything in your mod list. With an evo3 16g your gonna over run the 1g maf pretty easily. I over ran my 1g maf with a small 16g around 17-18psi