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Why Boost Is Decreasing?


merin234

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  • Member For: 14y 4m 7d
  • Gender: Male

Hi all

Let's say you get -injectors

-high flow cat

-intercooler

-tune

Say it makes 320 rwkw or so. But then boost decreasing from 15 psi peak to 11 psi towards the 5000-6000 rpm.

Is there a way to reduce that effect? Air intake or waste gate actuator or something else?

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  • Member For: 15y 24d
  • Gender: Male
  • Location: Sydney - Brighton Le Sands

Has it been tuned?

Normally when you have a bigger cat, you get boost jumps.. and it dripples down..

get it tuned champ!

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  • Member For: 18y 6m 8d
  • Gender: Male
  • Location: Melbourne, VIC

Yea the STD actuator has a 3psi spring if I remember correctly, and won't hold 15psi.. Get an actuator with the spring suited to what boost u want to run, so for a 15psi tune you should get a 12 psi actuator, you could get a 15psi one but you won't be able to run less than 15psi.. Unless your happy with that..

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