How Much Boost Is Safe

[burnsie]

hey ive tried looking through the posts and i cant find wat im looking for. so i was wondering if u guys could help me out. i hav a 1990 r32 gtst and i was wondering how much boost i can run on the ceramic turbo. i only hav the standard fmic, boost controler and an impul computer.

thanx heaps guys

[krzysiu]

This is getting f*kkin rediculous

[burnsie]

wat are u going on bout.

[**JaR**]

someone teach this guy how to search. this has been covered like 11,000 times. and no im not exxaggerating the point.

[nizmo_freek]

12-13psi max, do a search there should be lots of threads about it!!

[blackprincegts]

Burnsie.

I know people who have run 15psi through there stock ceramic turbo's on rb20dets. One guy i know blew his up after about 20 thousand kays i think.

Another of my mates was running 14 through his and his car ran fine for well over 50 thoudand, iv now got that same turbo for my GTS.

Some people are lucky i guess

[burnsie]

i always run 7 psi but when i wanna give it i run 12psi.. one of my mates reckon if i run anything over 14psi it will crack so i juz wanted to make sure. thanx for reply

Edited May 14, 2006 by burnsie

[lingeringsoul]

stick with 10 nice and safe and plenty of power to boot

[GTAAAH]

eh, youve got a rb20, right? Im pretty sure stock psi is 10 (.69 bar) , 7psi would be 3 psi lower than stock

Edited May 14, 2006 by r32 gts-turbo

[32DET]

eh, youve got a rb20, right? Im pretty sure stock psi is 10 (.69 bar) , 7psi would be 3 psi lower than stock

correct 10psi is stock so your gonna struggle to run 7 mate.

[burnsie]

are u sure cos my boost controller say's im running 0.55 and im pretty sure thats 7.1 or somthing and i dont feel it stuggling at all

[ODessA]

hahaha

[GTAAAH]

.55 is about 8 psi, check that your connections are all good to your boost gauge or borrow some one elses gauge to check if its not a fault with it

[blackprincegts]

tell me to shut up if im wrong but theres heaps of posts iv read in the past saying that stock boost is 6.8psi for the rb20det.

all my mates 32 gts't's read 7psi on there guages when they were stock.

may mate ran 8psi after his 3inch zorst was installed.

Edited May 14, 2006 by blackprincegts

[ODessA]

mine ran 10psi with pod and exhaust.

the internal gate on the stock turbo is 10psi isnt this the case ?

[GTAAAH]

hold up you ARE using an aftermarket boost gauge right as opposed to the stock one thats on your dash (which isnt in psi! it reads in 1000mhg or something, 7 being about 14 psi)? 99.9% of topics say 10 psi is stock, and 12 psi is recommend (my boost gauge read at about 10.3 psi)

Edited May 14, 2006 by r32 gts-turbo

[burnsie]

yeah im using aftermarket boost gauge but the one on my dash only goes to 7psi so thats y i thought 7psi must be stock and ive been told by heaps of ppl that they come out with 7psi stock but im prob wrong.

Edited May 14, 2006 by burnsie

[GTAAAH]

hmmmm, .55 bar is 7.9750000000000005 psi if u wana be exact

The stock boost gauge isnt in psi! its in some other reading, have a close look at it and itll say something like X1000mhg. At 7 on the gauge it would add up to about 14 psi, but as these things only boost 10 psi stock its rather innacurate (under full throttle mine jumps all the way to 7 which would seem to imply i was running 14 psi stock)

I thought the same thing.

Edited May 14, 2006 by r32 gts-turbo

[burnsie]

i see where u coming from ill juz change my boost crontrol setting to .69 for setting (A) and ill leave setting (B) at.85

[StOjA]

i have a stocker just pod filter . stock zorst and everything and my gauge reads 10.1.

are you guys saying that if i were to put a 3inch turbo back zorst then the psi will jump higher a few pounds?