Max safe boost? [Merged 10-6]

[Turbolaser]

Is it safe to do the boost contol solenoid mod on a stock 1G?

 

[booster16g]

im not retarded i know its not set at twenty for a reason. i have a walbro fuel pump 550 cc rc injectors, and a safc II. i have a two stage electronic boost controller its currently set on 8 and 15 psi.

 

[erald01]

i have stock internals on mine with a 16g and 20 psi should be fine. JUST dont go over it because you will blow something up. i am running 20 psi and i dont have a problem with it.

 

[CTP]

Power breaks things, not boost. As long as you have the fuel to support it, turn it up to whatever you want. I don't see a 16g making enough power to break anything.

 

[booster16g]

Thanks for your answers easing my concerns haha its appreciatted. also i understand the power thing but with more boost theres more power. just not as much if i had a bigger turbo. but you agree i should be okay?

 

[CTP]

If I can daily 27psi on a much bigger turbo with an equally stock motor, you can daily 20psi on a 16g.

I had no problem at 20psi with my e16g and 550's. I'd say man up and see what 23psi feels like. If it's significantly faster, leave it.

 

[booster16g]

i don't like the idea of manning up haha. but i may give it a shot. we'll see... thanks for your help tho

 

[stocker97tsi]

i know they said power breaks things, but boost is really, really hard on a motor...i would do the basics, such as checking your compression first and i would turn it up like 2 psi at a time and run it for a couple days each time..but good luck either way! let us know how it feels

 

[keithscianna]

Go for 30 PSI! Thats when you can feel your balls drop.

 

[tkelly27]

Haha, this is all terrible advice. "WICK THE BOOST UP SEE IF IT BLOWS OMFG!" 550's seem small to be pushing the 16g like that. Do you have a logger? You won't know if you don't. I doubt it, but you might be pushing the limits of those 550s at 15psi, you never know until you check.

Power doesn't often break things, detonation does. If you're not running decent gas in that thing, or playing with the spark curve (you can't with that AFC), you may run into that problem.

 

[booster16g]

i doubt that 550's are at their limit but i do only run premium haha im not dumb enough to run regular. i had a logger and i let my friend barrow it... haven't seen it since tho. im not worried about a fuel problem though i have a a/f gauge so i'll know if i run lean, i was just wondering how well my stock internals will be able to handle the boost.

as for 30 pounds it sounds nice haha but no thanks. i would like to feel my balls drop tho.

 

[spyderturbo007]

Just keep an eye on your airflow numbers when turning up the boost. If you had a 1g you could look at IDC, but with a 2g you have to tune a bit differently. Mathematically, 550cc injectors will support 31.58lbs/min at 80% IDC and 39.48lbs/min at 100% IDC assuming an AFR of 11:1 and SG of 0.76 for fuel. Take a look at my thread here for the standard disclaimers.

Stock internals will be fine provided you have a good tune. I'm running 23psi on the stock studs and gasket with no problems. If I remember correctly, Tyler was running about 26psi on a 50-trim with stock studs and gaskets. It's all about the tune.

anyway you will hit fuel if you have a stock fuel system also.

Fuel delivery has nothing to do with fuel cut. Fuel cut is caused by hitting a preprogrammed airflow cap set by the ECU.

 

[Shady1687]

which turning the boost up to high on a stock fuel system will cause fuel cut at WOT. PERIOD

 

[aeveret2]

What would be your opinion on the highest safe boost level for a 2g talon with a 16g and supporting mods?

mods are: 16g (not sure if big or small), 560cc inj., 255lph fuel pump, keydiver chipped eprom ecu, hard intercooler piping.

thanks
andrew

 

[VETTE_50_TH]

Probably, somewhere between 15-20. At most.

James

 

[Gstclipse69]

Do you have a logger of some sort? You'll need a logger to be able to monitor knock and/or your timing curve. Basically you can slowly turn the boost up until you get knock.

 

[2gtalonman]

Just stay at 16psi, you dont want knock with your baby intercooler.

 

[kittay]

Just stay at 16psi, you dont want knock with your baby intercooler.

x2! I would def look into picking up a FMIC. ETS has some great products and their pricing is awesome!!

 

[Chicken Patty]

Just stay at 16psi, you dont want knock with your baby intercooler.

x3. Without a FMIC just stay at about 16psi. Once you get a FMIC then you can go ahead and raise up the boost no more than 22-23psi on pump gas. Make sure that when you do try going with boost this high you have some sort of data logger or something to monitor your motor. Widebands are really helpful at least a/f ratio wise.

 

[aeveret2]

Just stay at 16psi, you dont want knock with your baby intercooler.

thanks for the advice. I'll keep it around there until I get a wideband. It's only been at like 12psi or less since I've had it.

 

[Chicken Patty]

thanks for the advice. I'll keep it around there until I get a wideband. It's only been at like 12psi or less since I've had it.

Keep us updated on your progress. I'm interested as well since I want to get rid of my T-25 soon. Damn thing sucks.

 

[hedrick]

It says your from Ohio.. well its pretty cold there so running 18psi with the stock side mount would be ok. When the weather gets warmer you should either turn the boost down to 16psi or upgrade your intercooler.

 

[DSMvroom]

Of course one of the golden rules is:
YMMV

Anyway you've got better supporting mods than I do since you have slightly larger injectors and a higher flowing fuel pump. That said, I am currently running 24psi on my evoIII 16g. My dyno sheet shown at left was at 19psi. I can't speak for IDCs though I'm sure mine are pretty high up there at this point, but I will say that I am still hitting 16 degrees of timing by redline at ~.92v on o2bank1 on my logger. (btw I am on the oem sidemount IC. All mods in my profile for further details)

Really, you do need to listen to the responses above me about the logger; it is crucial. If I were in your shoes (and really I sort of am), I'd be most worried about IDCs (and I really am). Also if you care, my experiences on the sidemount are that even at 24psi, it will hold up for 1 or 2 runs consecutively. After that you need to give the system time to cool off a bit to curb heatsoak.

 

[CTP]

Boost is meaningless. 560cc's will do 300whp with a decent safety margin. So whatever boost makes that power.

 

[yesItsdsm]

I searched but couln't find any definitive info on this turbo:

http://www.turbosystem.com/hahn/parts/s16g.htm

The wastegate is set at 15-17 psi of boost. Would that be safe on my motor? My mods are in my profile. If thats too much boost is what other mod would I need to do to run this turbo.

I also heard this turbo spools very slow? Any help on this topic would be greatly appreciated.

 

[talon4lifetsi]

The turbo flows at 575cfms thats a bit larger then the normal 16g. I would say it would be safe to run the turbo at 15-17 psi. But anything more then that i would diffenently go with larger injectors, dsmlink, etc. Before makin a choice just read up on some of the formus. It depends on your goals of hp rating. Once you make that choice you can decide on what path for tuning and fuel you want to take.

good luck!!! len