Max safe boost? [Merged 10-6]

[Turbolaser]

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

 

[deviousgst]

i was jst wondering if it would be safe for my car to boost 20+psi on my 97gst
mods:forged internals
pistons compression 8:1
profecb ebc
s-afc
660injectors
272cams
16gturbo
3infullexhaust
front mount intercooler..
thanks

 

[EvansF]

Big 16g or small?

 

[deviousgst]

Big 16g or small?

its the big16g

 

[EvansF]

Yes for sure, i have a 14b and im at 18 psi without problem. go for it, but go 1 psi by 1 and road test it, to see how your car is feeling it.

I dont know how psi a big 16g can handle but you should search in the forum, im sure a couple of thread is talking about that.

Your car can handle a lot of psi, the restriction is your turbo.
Dont burn it.

 

[Killa_dsm]

You cant be sure unless you have a logger. And being a Cali with 91 piss water doesn't help either. But if I remember correctly I was running 20psi on my b16g with S-AFC, logger, 190, 560cc, so you can do it. You just need a logger to tune with.

 

[AlphaAssault]

what about a fuel pump? have you at least rewired your stock one, or do you have a new one altogether?

 

[TiradoCC]

Without something to help you tune, like a wideband and a logger....I would say NO. It is not safe tuning with out those 2.

You should really think about getting both, it is very worth the investment. Once you have those 2 you will know exactly where you are on your tune, and you won't have to "guess" if you can run X amount of boost.

 

[Killa_dsm]

what about a fuel pump? have you at least rewired your stock one, or do you have a new one altogether?

Oh yeah, I missed that. You would definitely need a fuel pump to run that kind of boost.

 

[EvansF]

Yeah, btw, post whats ## fuel pump setup, its kinda important.

 

[deviousgst]

Without something to help you tune, like a wideband and a logger....I would say NO. It is not safe tuning with out those 2.

You should really think about getting both, it is very worth the investment. Once you have those 2 you will know exactly where you are on your tune, and you won't have to "guess" if you can run X amount of boost.

thanks..
is a logger the same as my s-afc or no..
well im getting my car tunned my havoc motorsports, i was jst wondering because im about to put my rebuilt engine in my car this weekend..so when i break in my car ill know that i can boost at least 20psi

 

[MrBoxx]

An SAFC is a piggy-back fuel controller. A datalogger is a tool used to monitor what the ECU is seeing from the engine. You use the datalogger to see if you're running lean, what your injector duty cycle is, if you're knocking, what your timing is, etc. THEN you tune those with your AFC.

We can't tell you what is SAFE to run on your car. Only your logger can show you that. If you pick up a logger and give us a datalog, we can help you make a decision based on that information. But a mod list isn't the type of data we need to make an informed decision.

 

[deviousgst]

An SAFC is a piggy-back fuel controller. A datalogger is a tool used to monitor what the ECU is seeing from the engine. You use the datalogger to see if you're running lean, what your injector duty cycle is, if you're knocking, what your timing is, etc. THEN you tune those with your AFC.

We can't tell you what is SAFE to run on your car. Only your logger can show you that. If you pick up a logger and give us a datalog, we can help you make a decision based on that information. But a mod list isn't the type of data we need to make an informed decision.

cool thanks..
do u know where can i get one for a good price

 

[d3str0y3r]

20psi should be no problem.. i ran 20 on my 14b with 750's.. and i know some people running 20psi on 16g's with 550's

 

[deviousgst]

20psi should be no problem.. i ran 20 on my 14b with 750's.. and i know some people running 20psi on 16g's with 550's

kool..
thanks

 

[Killa_dsm]

I would recommend reading about how to tune before turning up the boost. Here are some links that might help.

http://www.dsmtuners.com/forums/articles-tuning-ecu/105569-how-safc-works.html

http://www.dsmtuners.com/forums/articles-tuning-ecu/58403-definitive-piggyback-tuning-guide.html

 

[JayRolla]

kool..
thanks

Do you have a fuel pump?

 

[Steelnation36]

as long as its tuned you should be fine boosting that much. Though stick to like 14 until you get some supporting mods to be safe

 

[ccso139]

I am having a boost controller installed later today and want to know what is the safe boost pressure setting on a stock engine. The only mods to the car (that I am aware) 1st gen bov, air intake, and inter cooler pipe. I have a turbo back exhaust that I am installing this weekend and don't want to over boost. Btw, I do have a after market boost gauge. Not sure if it is 100% correct.... car has boosted to 20psi according to the gauge. It was common to boost up to 18-19psi, that was before installing the air intake (now I am getting surging at full throttle); gotta talk to mechanic about that too. Thanks for any help. Chris

 

[absolute_DSM]

Before raising boost, check for boost leaks. With boost leaks, you may be reading 15psi on the gauge but your turbo may be working too hard.

Your boost pressure depends on your fuel system and tuning level. With an all stock system Id think its around 14psi.

 

[ccso139]

Before raising boost, check for boost leaks. With boost leaks, you may be reading 15psi on the gauge but your turbo may be working too hard.

Your boost pressure depends on your fuel system and tuning level. With an all stock system Id think its around 14psi.

Thanks, I did a boost leak test right after buying the car (2 months ago) and believe that I got everything tightened up. At the time, the gauge on my leak tester and the boost gauge were the same (inflated leak tester to 15psi/gauge in car read 15psi). To the best of my knowledge, fuel system is stock.

 

[vancitydsm]

i think you can push a bit more boost with no problems. I wouldnt go anything past 16 pounds for now, until you have a way to manage your fuel. If you have a " surge" you shouldnt boost around too much until u figure it out..

 

[absolute_DSM]

Good to hear.

I would now step up and grab a logger to check your injector IDCs. When you see them hit 85% or so, its time to step up the injectors and fuel pump and FPR.
Then grab up some tuning device - an SAFC (wont give you timing control) or even better DSMlink (better choice if you have big goals) Then you can play with your boost, fuel and timing. The more boost you push, the higher your IDCs will go obviously. If you do get DSMlink, just grab some 1100, or 1150s and be done with injectors. DSMlink will allow them to idle like stock no matter what setup. SAFC can only handle 650s or so without a chip to compensate (which still wont allow timing control)

And 1150s will handle a lot of CFM. Past your turbo you have now

 

[DoItOnAll4s]

Hey, I'm new to DSM's and turbo motors in general, but whats a safe boost pressure on a 6-bolt motor with ARP head studs and a metal headgasket. It has an EvoIII 16g with a Supra extra-thick sidemount, 550cc injectors and a SAFC fuel controller with wideband. Just got this baby, boost controller coming soon, and wondering how high I can take the boost at the drag strip without damaging anything. Thanks

 

[MrBoxx]

You'll need a datalogger to find out for sure. Post a log at conservative boost and we can make some better educated guesses. But at this point, ANY number anybody gives you is just going to be a guess, since we have no way of knowing what is SAFE for your car.

Do you want to risk your engine on a guess?

 

[DoItOnAll4s]

I'm new to datalogging, but I've got a small laptop with a car mount. What's a good software and cables that aren't terribly expensive? And since I've got the whole laptop in car thing going on, what are other things I can use it for tuning wise? Sorry if they seem like noob questions...