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Boost Cut

lukes146

By lukes146,
in Engines & Forced Induction

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lukes146 Contributor

lukes146

Posted
Posted

Yo!

I took my car for a run tonight with a mate who's practically a mechanic to see if he could figure out why my cars running so slow. Anyways the turbotech is set at 10-11psi but was spiking from 12 to even close to 15psi at times partiuclarly in 2nd gear, whenever it spiked to that amount my car would make this rapid muffled sort of backfiring noise and lose a huge amount of power..

My mate told me it's the boost cut... From what i know theres a restrictor in one of the hoses that connects to the turbotech, if the mechanics left that hose there and didnt take the restrictor out and just connected it to the turbotech would that be whats causing the problem? and is my mate right about that noise and power loss?

Cheers

Luke

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Craved Grand Master

Craved

Posted
Posted (edited)

noise an power loss definately sounds like a (edited for SK :( ) : excess airflow protection

mine was caused by the air filter element falling out of the pod and the boost spiking to near 16 psi..

dont know what the turbotech is so im not sure what to say about the restrictor.

Edited by Craved
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Craved Grand Master

Craved

Posted
Posted

oh i run a blitz ID3 so i never read that thread..

if your i doubt, run new hoses from the plenum/IC pipe to the controller, then new ones to the actuator..

no chance of a restrictor that way.

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lukes146 Contributor

lukes146

Posted
  • Author
Posted
oh i run a blitz ID3 so i never read that thread..

if your i doubt, run new hoses from the plenum/IC pipe to the controller, then new ones to the actuator..

no chance of a restrictor that way.

So there is a restrictor in the stock hoses? I'll do what you said though tomorrow :( maybe thats why my car wasn't pulling anything on the dyno...lets just hope the mechanics are hopeless in all respects and that thats the problem :yucky: i'll have to get a fresh dyno from elsewhere after i fix the boost cut problem, is there anything else that could cause a boost cut?

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paulr33 Grand Master

paulr33

Posted
Posted

do a search, its been covered a million times

the factory ecu has excess airflow protection which you are hitting. when detected it will dump the timing and run mega rich to protect itself

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Sydneykid Grand Master

Sydneykid

Posted
Posted

Ah no, another recalcitrant;

Write it out 20 times..........

THERE IS NO SUCH THING AS BOOST CUT

THERE IS NO SUCH THING AS BOOST CUT

THERE IS NO SUCH THING AS BOOST CUT

THERE IS NO SUCH THING AS BOOST CUT

THERE IS NO SUCH THING AS BOOST CUT

THERE IS NO SUCH THING AS BOOST CUT

THERE IS NO SUCH THING AS BOOST CUT

THERE IS NO SUCH THING AS BOOST CUT

THERE IS NO SUCH THING AS BOOST CUT

THERE IS NO SUCH THING AS BOOST CUT

Half way there……………

THERE IS NO SUCH THING AS BOOST CUT

THERE IS NO SUCH THING AS BOOST CUT

THERE IS NO SUCH THING AS BOOST CUT

THERE IS NO SUCH THING AS BOOST CUT

THERE IS NO SUCH THING AS BOOST CUT

THERE IS NO SUCH THING AS BOOST CUT

THERE IS NO SUCH THING AS BOOST CUT

THERE IS NO SUCH THING AS BOOST CUT

THERE IS NO SUCH THING AS BOOST CUT

THERE IS NO SUCH THING AS BOOST CUT

Hope you learnt a lesson, next time it will be detention for you.

:laugh: cheers :P

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coastlife Collaborator

coastlife

Posted
Posted

Hey SK

I run KN flat filter ,Jaycar boost controller, threeand half cat back and my " protection" cuts real bad from 8-9 pounds how come half these guys dont get it till after 10? no fair!! if I keep it over 4000 through the gears its ok but from 2500 you would think someones turning the key on and off. I have an SAFC ( the blue one) shouldn't that fool the ECU into thinking the signals less and stop it?

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