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Low Boost Pressure

Guest Lojikl

By Guest Lojikl,
in Western Australia

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Guest Lojikl

Guest Lojikl

Posted
Posted

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.

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https://www.sau.com.au/forums/topic/13983-low-boost-pressure/
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rob77 Veteran

rob77

Posted
Posted

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 Veteran

rob77

Posted
Posted

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.

DCIEVE Mentor

DCIEVE

Posted
Posted

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 Veteran

rob77

Posted
Posted

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.

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