Suggested PSI for stock 2g turbo setup

[Dan1997GST]

anybody know? i have injen intake, greddy type-s bov and an apexi n1 catback exhaust. i am about to order my greddy profec-b spec II boost controller, but i was wondering with what kind of PSI settings i can get away with.

thanks in advance.

 

[Jebus[tuning]]

15 is ideal for the hair dryer (t25). After 16 the t-tooslow starts blowing hot air which is useless. I run unregulated boost because I'm missing a vaccum line for my MBC...oh well.

 

[Dan1997GST]

thanks for the quick reply. i guess i should look into getting a new turbo and supporting mods once i get a better suspension.

 

[Jebus[tuning]]

Do you have any set goals for WHP/1/4 mile time? If so, we could suggest a good setup for you.

 

[Dan1997GST]

i was aiming at the mid 13s lower 14s range for 1/4mile times. whp i have no idea.

 

[doodie]

I wouldn't set the MBC at anymore than 16psi. I had mine on 16 and it ran fine.

 

[Dan1997GST]

the profec-b spec II isnt an MBC its electronic. does that make a difference on what i should set it to? i wouldnt think so. i guess i'll try starting at 16psi and then go to 15-14 depending on how things go.

 

[bluelightning92]

boost pressure is the same, manual or electric

 

[NoRiceTSi]

the profec-b spec II isnt an MBC its electronic. does that make a difference on what i should set it to? i wouldnt think so. i guess i'll try starting at 16psi and then go to 15-14 depending on how things go.

Always start low then slowly work your way up

 

[Dan1997GST]

Always start low then slowly work your way up

thanks for the tip. but how do i actually tell if its too high/low?

 

[drognir]

thanks for the tip. but how do i actually tell if its too high/low?

I'd familiarize myself with the unit via the manual before messing with the settings too much. It's not user friendly at all unless you've read the manual, at that point it becomes pretty straight forward to use. If you don't have the manual, here's a link to the PDF version of it:

http://www.alamomotorsports.com/greddy/PROFEC_B_SPEC2.pdf

 

[gst fat]

Mbc(manual boost controller) is the best way to go in my opinion, works the same as an ebc just under the hood adjusting, and way cheaper!!

 

[Zdrummer15]

This is a 6 year-old thread guys.

 

[gst fat]

Lol it's on the main page though

 

[my dreamt dsm]

These resurrections never gets old!
Oh and 15psi max on the t small even though i've seen some push it to 17psi at the track with the t small

 

[97-gst]

ive seen on the timeslips that people have been running like 9.1 in the 1/8 mile at 18-19 psi on the t-25. this friday im gonna crank mine up to there. if i use 110 octane will this help me? i would atleast like to hit 9.6 1/8 mile. any suggestions.

 

[Zdrummer15]

Lol it's on the main page though

Someone dug it up and posted in it so it appeared on the home page. The threads listed there are the tech threads most recently posted in.

 

[rEclipserGST]

Someone dug it up and posted in it so it appeared on the home page. The threads listed there are the tech threads most recently posted in.

Correct. It was a newb N/T guy who zombied it.

 

[LiquidX]

No more than 15psi max on stock fuel setup for ANY turbo. The bigger the turbo the less psi you can run beacuse you don't have the fuel to match the air flow.

For a T-25 don't go more than 17psi max as after that you are out of it's effiency range and only blowing hot air due to over working the turbo.

97-gst guy, even having 110 octane won't help with fuel cut because you have a stock fuel system. You would need to upgrade your fuel pump, injectors and get a fuel management system. You prob. won't knock at all with 110 but you are still running very lean and over working the turbo.


To the new people, be sure to see the last posted date is before you post a reply. If you have a question about what was talked about in the thread do a search first for it and if nothing then revive the thread with your question if it's similar the what was discussed previously.