turbo lag

[Guest]

what about the replacement turbo, what condition was that in?

just subscribing to this thread

[BLSTIC]

When you complain about lag you *really* need to tell us what is happening with the boost. For example my VF10 equipped GT could be making 10psi at 2500rpm in 3rd. When I had a leaking pre-turbo exhaust it wouldn't get to 10psi until 3000rpm.

If you don't have a boost guage it is going to be hard to diagnose your problem.

Unless you mean it's missfiring? That's a different issue again, and is related to the coils rather than the turbocharger (assuming those were the only two changes).

[Guest]

i do have a boost gauge but it is only going up to 7psi and what i mean by lag is its not boosting propley im new to a turbo car as this is my first one so im not sure how to explain it.

thanks brad

[pl0x]

lag is before the turbo kicks in, if its not boosting enough thats a different story, sounds like its running wastegate pressure

[Guest]

the air intake is stock stanard so how can i check that

[pl0x]

its got to do with the vac/boost line plumbing,

ive got no idea how your car should be setup, mite be best to copy/check againist someone elses car or get a bleed tap and up the boost to see if it makes a differance.

[Guest]

oh thanks for that i will have a look

[Bazza-NZ]

 casper said:

i do have a boost gauge but it is only going up to 7psi and what i mean by lag is its not boosting propley im new to a turbo car as this is my first one so im not sure how to explain it.

thanks brad

i know you are new to turbo cars but can you explain what you see and feel, try to describe as best as possible? maybe it might gives us a better indication

7PSI is waste gate pressure so when you installed the turbo, did you put a vac (pipe) from the turbo outlet [the thing that goes to the intercooler] to the waste gate [thing that is bolted onto the turbo {possible gold or black in colour}] ???

[dubbedup]

could be as simple as a loose hose clamp?

[Guest]

seems to be working ok now but it not picking up till like 4000rpm

[Guest]

i just went and had a check and it looks fine to me

[Bazza-NZ]

 casper said:

seems to be working ok now but it not picking up till like 4000rpm

I'd say you have a vac / exhaust (possible both) leak somewhere then

Check the pipes for splits etc, try the exhaust gaskets bolts, see if they are tight

[Guest]

ok thanks will check wen turbo cools down ;D

[BC5RA]

Has anybody asked the condition of the VF8?

Has it been rebuilt or has it been kicking around absorbing carbon since the beginning of the 90's?

[Guest]

it looks fine on the side i checked it over before i put it in

[BC5RA]

How did you check it over?

[Guest]

looked as a newbe would on anycar as its not the turbo as it is spoilling up

[G-unit]

postv a pic of how u have ya boost controller hooker up, the stock unit. bazza could u also please

[Guest]

got camera but not the cable so will get a pic up tomorrow and that seems all fine but all the help will be good

[Bazza-NZ]

 G-unit said:

postv a pic of how u have ya boost controller hooker up, the stock unit. bazza could u also please

no point for me, I'm running a pipe from turbo outlet to GFB boost controller to the turbo wastegate, easy simple and effective i found

but if you have the stock one setup it should do something like this

TOP - Should go to the turbo outlet

BOTTOM SIDE - Turbo Wastegate

BOTTOM - Back into the intake (that box if you still have it)

NOTE !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

that bottom pipe should have a restrictive pill in it to stop SPIKING.. without it in you will find that it will boost spike till cut in some heavy footed moments

[G-unit]

yea im sure thats how mine is also, have my racepro tap 2 put back in so 10-12psi again, think i need a shorter pipe tho for controller, allgood, lets try get this BF boostn

[Guest]

hey guys im selling my car and gona try get a rs legacy but it is hard not working at the mo to get one.

[G-unit]

gee dont give up so easy

[Guest]

im not giving up i want to upgrade to sumthing better

[Guest]

hey guys here iss some pics of the engine bay