Low Boost Pressure

[Guest Lojikl]

Okay this has been bothering me for a while.

My boost pressure seems fairly crappy. Even when I hammer the accellerator the boost NEVER goes above about 3.5 on the standard boost guage, and I can feel that theres not much jump in acceleration.

I have a Pod filter and 3 inch cat back exhaust. My old 180SX used to hit 15 no worries,

Anyone have an ideas what might be going on here.

Cheers.

[GTS-t VSPEC]

Is that cat new too? If not, kill the cat, might help increase the boost:D

See'ya:burnout:

[Guest Lojikl]

Yeah, the 180 I had still had the cat on and was doing alright.

What sorts of boost readings do you guys get. I wanna make sure everythings alright first.

Thanks for the help

[int21h]

My SkyRine goes all the way up to +7, but i still think it's not going anywhere.

I'm putting a real boost gauge on to find what its running exactly first. Could be a good move on your behalf.

[Cake]

mines stock except for catback

i get around 0.6bar at full boost.. i think

[hippy]

well my car does the exact same thing .. not over 3.5 .. i think thats the normal stock boost setting .. i've been told u need to get a boost controller of some type ... probably electronics cause they control better ... let me know what u do with your car

[rob77]

If you want to increase the boost there are 2 way, bleed valve or an electronic boost controller. Some EBC's have a boost gauge built in (blitz dual sbc) which will tell you how much boost before manifold. The bleed valve is much cheaper but will spike so you'll need to get yourself a seperate boost gauge to read what boost you are running. Eitherway is effective, just dont run more than 13psi through the stock turbo. Plus if you still have the stock intercooler you wont be able to run that boost all the time without having some detonation when the temperature is warm. Comes down to how much you want to spend and how reliable you want it to be.

[rob77]

The stock boost gauge is pretty inacurate as well, best to have an aftermarket one.

[rev210]

3.5 is normal.

[Guest Lojikl]

Cool guys, thanks for the advice.

I'll post a reply when I manage to get some better boost.

[hippy]

do it soon man .. i wanna see the results ... cause my car is in the exact same condition right now ...

[rob77]

Nothing like setting my EBC to 12psi on a cold night like tonight and giving it a good fang on the way home from some crappy training session at telstra Even with the stock cooler on a cool night like tonight I found I could run 12psi without much problems but with the front mount now it does seem to pull a small amount harder.

[hippy]

what problems did u have running stock IC at 12 psi?? on a normal day and on a cold night??? or a warm night too??

[DCIEVE]

my r31 only reads around 3psi on the stock guage as well, fitting a better boost guage soon to suss it out.

rev210, in saying thats normal is the factory guage out or is the car just running bugger all boost?? cheers mate

[rob77]

with the stock intercooler and 12psi on a 30+ degree day the car would detonate when pushed hard because the intake temps were so high, detonation sounds like a rattling noise coming from the engine and will cause severe damage to the engine if you keep pushing it, if you hear it stop pushing the car and back right off. Now I can pretty much run 12psi on a hot day and push it hard without too many drama's but I dont like to.

[MrGTST]

Hmmm well with my FMIC I am running 14 PSI and am yet to see any problems.... I defianately wouldn't go any higher than that on my stocker turbo though....

[Zahos]

3.5 on the standard boost guage is normal!

3.5 = 350 mmgH (I think) = 0.47 Bar = 6.76 psi.

The boost guage measures in a different unit of measure if you haven't noticed...

[3R1K]

Wow how about 1 bar how big is it? I never reach 1 bar especially in easter break double demerit it will hurts

[adam 32]

how big is 1 bar? oh god....

1 bar = 14.5psi

lets hope you never reach 1 bar

[DCIEVE]

cheers zahos, i never really paid it any attention