boost problem

[DeaneMsport_180sx]

just something i noticed while i was drifting in punchestown...
whe i upshifted from 2nd to 3rd the boost went off the clock(over 2 bar ) but then it immediatly dropped back down again...was just wonderin if my boost gauge is fooked or what
also i wasnt fully taking my foot off da throttle when i was changin up so maybe that has something to do with it???
any advice would be greatly appreciated

[bubble1984]

sounds like a big spike? try a different actuator. is it hks? or fiddle with ur boost controller, id say the boost controller if u have one could be a lot to do with it.

[DeaneMsport_180sx]

ya its a HKS actuator....would dat b bad do you think or could it be left alone?
and i dont have a boost controler it was just set to 1.1 bar when i got it mapped on a motec....
thanks for the help btw

[Famous jh]

ya its a HKS actuator....would dat b bad do you think or could it be left alone?
and i dont have a boost controler it was just set to 1.1 bar when i got it mapped on a motec....
thanks for the help btw

You'd hardly be gettin a boost spike of 1bar would ya? Doubtful tis your boost guage it would be doin it all the time otherwise surely?!

Bring it out for a lash on the road and give it full boost in 5th and see will it do it under full load then

[bubble1984]

i dont tink its that bad, its only for a second or less, but it is a big spike, a boost contoller would help get rid of that spike id say

[Famous jh]

i dont tink its that bad, its only for a second or less, but it is a big spike, a boost contoller would help get rid of that spike id say

Ruby you mad man Theres no way a boost spike of 1bar is anything else but baaaaaaaad imo

[2tonne]

Ruby you mad man Theres no way a boost spike of 1bar is anything else but baaaaaaaad imo

As above - 1 bar is a bloody high spike!!
have you a boost controller fitted?
and what dump valve arrangement is on the car?

[bubble1984]

and i dont have a boost controler it was just set to 1.1 bar when i got it mapped on a motec....
thanks for the help btw

how long ago was the car mapped? if it was recently you should ask whoever mapped it to have a look at the issue. although im sure he/she would have noticed such a large spike. he/she should have recommended a boost controller. them actuators sometimes give trouble.

check ur pipe on the actuator that its ok. like jh says a good road spin will tell alot more. if thats possible.

alternatively run 2 bar boost. wohoo

[Famous jh]

alternatively run 2 bar boost. wohoo

Now yer comin round to my way of thinkin........ YeeeeeeeeeHAAAAWWW

[DeaneMsport_180sx]

da car was mapped at the start of last year by robbie in track day performance
it was the first time it ever did it in punchestown like???i cant figure it out???
would it have anything to do with the fact i wasnt taking my foot off the throttle while i was changing up??would that cause a spike??
defo cant go for a spin i live in a housing estate haha
ah id be happy out running 2 bar lol
and its a Defi electronic boost gauge