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Is This Possible?

Daboss

By Daboss,
in Engines & Forced Induction

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Daboss Experienced

Daboss

Posted
Posted

Hey forum just wondering if it is possible to see boost spikes of like 18 psi running through a stock 95 gtst only mods air filter iridium race plugs gapped at o.7 and a boost controller tuned to 12psi lo and 15 psi high. Now it doesnt hold the 18 psi for long cause the boost controller overboost setting kicks in at 16 psi and limits the boost to 10 psi but when looking at the peast boost made it reads 18 psi is that possible.

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https://www.sau.com.au/forums/topic/149841-is-this-possible/
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Freddy Kruger Mentor

Freddy Kruger

Posted
Posted

15psi on the stock turbo? stock ecu as well?

personally i would f**k that shit boost controller youve got and get something that will hold the boost better. even the $30 one of ebay would do a better job than whatever youve got... ive got one and holds 11psi absolutly perfect.

also 15psi on stock turbo is gunna shag it, sooner rather than later, after 12psi they lose the efficiency anyway and it just gunna go on you. personally id set it to like 8psi min, 11 max. i had a turbosmart dual stage boost cotroller on my r33 when i got it, held boost fine. its for sale if you wanna make an offer.

Daboss Experienced

Daboss

Posted
  • Author
Posted
turbosmart bleed valve?

get rid of it, fork out the extra for an ebc.

Thats the funny part it is an ebc. The name on it is PIT bcu. With you guys ebc what did you have your settings tuned to like start boost when the wastegate begins to open, gain how quickly the gate opens 100% being the quickest, warn this is the setting you put it to so if it ever reaches thatthe limiter kicks in and limits the amount of boost you get. If your ebc isnt like that can you suggest some figures to try. Cause I am stumped. Any help would be appreciated. Yes stock turbo and ecu. It holds the boost until i get close to redline then when its at like say 5500 rpm or so it overboost and thats in all gears except fourth and 5th. neer noticed fourth but it might be doing it in that as well. Do I want the waste gate to open at a higher or lower boost setting for 11psi on a stock turbo if i begin to open it at say 5psi would that be better than 3psi?

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