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Boost Problem Hitting Some Sort Of Limiter On 15psi

GTR-27L

By GTR-27L,
in Engines & Forced Induction

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GTR-27L Enthusiast

GTR-27L

Posted
Posted

Ive got a R32 GTR and ive taken out the ristrictor in the hose that goes to the boost controller solaniod but i was also told to join those 2 hoses together to get 15psi.. It works BUT like at 6000rpm its sometimes starts to make a limiter noise. could some one help me because my car is GOIN NUTS ON 15PSI :O

I was only running about 8-9psi before but now that little bit extra is awesome.

DO GTRS have a boost cut defender?

ANYONE?

Im only new to the forum so this is a pic of my car.

post-26787-1143156584.jpg

TTT Grand Master

TTT

Posted
Posted

explain exactly what happens at this 6000rpm mark.

does it cut the power completely.. like is it violent?

is it like a rev limiter where it stutters and kinda back fires?

doest it keep reving up but kinda misses?

what happens to the boost gauge when this "CUT" happens? still sit at 15 or drop?

with more description and those answered, people can give you a better response as to what the problem is.

at the moment it could be..

AFM max

spark blowing out due to excess boost.

coil packs arc'ing out

etc...

TTT Grand Master

TTT

Posted
Posted

I think that the fact that you now have about 2 x the boost you had before, you are blowing out the spark.

there are a few things you can try which will cost you nothing but some of your time.

1.) take out your spark plugs and gap them down to 0.8mm.

if they already are, drop them back to 0.7mm.

2.) with some electrical tape, tape up the coil packs. there is a guide on this in the maintenance section of these forums.

I did the above 2 points 2 weeks ago and my car revs out smoothly now.

mine is an rb20 but same edal.

runs a little more boost than stock.

I suggest you try the 2 things above as they are free and MAY fix the issue.

If you are in Sydney, I can help you do it if you like.

Sydneykid Grand Master

Sydneykid

Posted
Posted
if they are anything like GTST's then yes they do.

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

:O cheers :P

paulr33 Grand Master

paulr33

Posted
Posted

if you are running 15psi and stock ecu you will be encountering the STOCK EXCESS AIRFLOW protection. turn the boost down and try again, i would suggest around 10psi at the most. this should work around the excess airflow protection

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