Max safe boost? [Merged 10-6]

[Turbolaser]

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

 

[Bud92gsx]

You have bigger injectors on the stock ecu, and no tuner.Have fun with that.

 

[007jimmy]

You have bigger injectors on the stock ecu, and no tuner.Have fun with that.

He has the MAFT... Although 680s are rather large to try to control with it.

 

[2GbTalonGuy]

With said mods, I wouldn't go past 15psi.

 

[Bud92gsx]

He has the MAFT... Although 680s are rather large to try to control with it.

Running 680's with 38psi fuel pressure with only a maf-t.Is not the way to go.2g maf and 550's can be done, but with no safc or tuner.It's gonna run rich.

 

[GoCanes777]

eprom dsmlink 15psi

 

[rcarbajal4]

Running 680's with 38psi fuel pressure with only a maf-t.Is not the way to go.2g maf and 550's can be done, but with no safc or tuner.It's gonna run rich.

I agree. Seems a bit risky. I would run close to stock (maybe 15-16psi) until you get some form of tuning. *cough* dsmlink *cough*

 

[wilderg88]

like everyone said unless you got someone tuning it with SAFC or DSMlink anything over 15 is a bad idea

 

[007jimmy]

Running 680's with 38psi fuel pressure with only a maf-t.Is not the way to go.2g maf and 550's can be done, but with no safc or tuner.It's gonna run rich.

680s don't flow 680cc on a 1g 5-speed... It'll lower it to around 640ish which would put him damn near the limits of the MAFT.. I never recommended it, I just said (in a different manner) his injectors were almost too big to try to tune with. Besides a fuel pump or even just a rewire was never stated in the mod list. I agree on between 14-15psi boost max. I tune with Dsmlink but I also have the MAFT on my car also.

 

[slayer_699]

I know it would run rich. Lol what about with all mods on stock injectors?

 

[FLASH1970]

I know it would run rich. Lol what about with all mods on stock injectors?

Get yourself a datalogger and monitor knock and injector duty cycles. Also, log your AFR. Then get an MBC and turn it up a little bit at a time. Everyone's car is different. Altitude, weather, condition of the engine and bolt on parts... all effect what you can do. 680's are about the limit of an SAFC. So, maybe if you're new to tuning you might want to try that route to get your feet wet and get rid of the MAFT. I've never used an MAFT but people seem to think the 680's are too big for it. I had my 2g on 680's with an SAFC. Also get yourself a 2g MAS. Datalog RPM, Injector Duty Cycle, knock and AFR. Then add or take out fuel from the SAFC in the given rpm range based on your datalog to get your injectors dialed in. DSMLink is great and I recently began playing around with it but it is more expensive than an SAFC & datalogger and there's a bit more to it.

 

[Mr PopUps]

On stock injectors, stock (rewired) FP and stock turbo you can run 18+ psi on pump gas with nearly no 'tuning'. This is with a full 3" t-back, K&N, lower portion of MAF missing, and fully ported exhaust side. It cracks me up with all the posts that are pure guessing. Or am i not seeing some new calculator thats been invented?

Now having said that, pushing your car at 18psi ALL DAY wont have good results regardless of your FP. You guys also arent paying attention he is talking about a 90 which can run a lot leaner from the factory. On a voltmeter type O2 'gauge' staying .80 or above is considered quite safe.

 

[madmaxxx]

15-16 with pump and 18 with race gas. monitor your a/f and or egt

 

[Mr PopUps]

Race gas for 2psi? I put out about 282hp on 104 octane gas with the stock fuel pump system with the mods in my previous post. The only tuning i did was by voltmeter and moderating the airflow and running 22psi. I ran 18psi all day every day on pump gas (93).

 

[TUR3O]

You need fuel before turning the boost up a lot.

 

[twitchferd420]

how much boost can i get out of a 14b with supporting mods...im getting injectors, fuel pump, dsm link, and i already have a blitz electronic boost controller(not set up yet)

 

[jrs187]

Ok so i just put a used 6 bolt in my talon. There is nothing done to the motor except new bearings. It has stock everything except the turbo. I was kind of in a bind so i put a ebay turbo on it.

What is a safe boost level for a stock motor? The reason i ask this is im maxing out my 20psi gauge. The needle is going all the way over to the vacuum side of the gauge. It stops when it hits the peg right before vacuum starts. Is this safe or no?

 

[92AWDHX40]

Stock set up, i would get a wideband and keep it at stock levels 20 psi to me is high without the proper mods keep it maybe around 10 or 12 on your stock setup until you have the mods for it, and hoping that turbo holds up.

 

[Bud92gsx]

Your getting boost creep up to your max psi on your gauge..

If you have a boost controller try turning it down to stock wastegate pressure..You can always port turbine housing, go external,or do a wg mod.

Good read here> Tech Guide - DSMtuners

 

[jrs187]

Sorry about that guys. I do have external waste gate. It doesnt creep at all. It starts spooling around 2500-3000 and bam it max's out by 6500. I have a LC1 and jackal. Its all installed in the car. Thing is im still trying to figure it out. I want to get the aem ems 2 but cant justify it right now.

 

[Bud92gsx]

Forget AEM EMS..Click this> ECMTuning, Inc.

 

[jrs187]

So what would be proper mods to keep 20psi safe? I know i need bigger injectors for sure. But i havent come across ones in the price range. I need to pull my fuel pump out to check to see what it is. The car used to be a drag car. They didn't know how to set timing, or put plug wires to the write spot. They also told me it had a solid tune on it. I should of realized they lied when i noticed everything else. Ive already ruined to many engines for the short time i've owned this car. If someone knows how to run jackal and can help me get it right id appreciate it. Thanks for the help.

 

[boosted99_420]

Forget AEM EMS..Click this> ECMTuning, Inc.

^^^^^^^^ This is what you should do just their baseline tune from them will wake up a turbo dsm. Also I went to 15psi on stock engine but creeped to 20psi alot with mbc

 

[synthetek]

So what would be proper mods to keep 20psi safe?

If you have a wide band and Jackal then you need to log it to see whats safe to run. It could be fine now but you need to check and see if your getting knock, your afr etc..

 

[primo513]

What are you using to tune the car? you can tune the airflow to compensate for having stock injectors for a small amount of power. Are you using a mbc? if so I would honestly just take it out and run you off the waste gate spring, at least until you get more supporting mods that can handle a higher psi. You can't push ebay turbos as much as some people think, your gonna end up destroying it before you can even prepare to replace it. Until you can rely on upgraded parts to make power over tuning a stock setup until its maxed out i would just be patient and make what you have a reliable setup. You'll regret pushing that turbo too much

 

[And_44]

If your vacuum is going past -20psi maybe your gauge is wrong as well? You should see -16 to -20 on a stock engine usually at an idle.

Ehhh, well if your engine braking it will be higher but at no load it will be as above.