Few Conversion Questions Fellas N/A - Highcomp Turbo

[detox_nath83]

Firstly guys is mainly with the position of the AFM i have seen some in the original place B4 turbo and i have seen some mounted in cooler piping near dizzy/rocker cover.
I have read some experience problems in cooler piping as when letting off under boost sudden drop of intake pressure the Ecu does not adjust quick enough causing rough idle and low revs is this true???


Second is correct plumbing with Vac lines.. do i go say from turbo housing to a "T" piece then to bottom port of the External Wastegate and the other line from T piece goes to the Manual boost controller(MBC) then on to top port of wastegate?

As for blow Off do i plumb a line from intake piping/intake plenum to top nipple of blow off valve?

thirdly what oil is recommended for a turbo engine what viscosity should i use??
is 20W-50 ok what i use already?

and lastly what is a good timing degree for a high compression convert do i basically adjust/fine tune to avoid pinging/detonation. Yes im running a Cooler

Thanks heaps for your help in advance and feedback. hopefully some turbo experienced blokes can give us a hand?

Out...........

[VL_5SPEED]

[QUOTE=detox_nath83;1389264]Firstly guys is mainly with the position of the AFM i have seen some in the original place B4 turbo and i have seen some mounted in cooler piping near dizzy/rocker cover.
I have read some experience problems in cooler piping as when letting off under boost sudden drop of intake pressure the Ecu does not adjust quick enough causing rough idle and low revs is this true???


Second is correct plumbing with Vac lines.. do i go say from turbo housing to a "T" piece then to bottom port of the External Wastegate and the other line from T piece goes to the Manual boost controller(MBC) then on to top port of wastegate?

QUOTE]

Pretty sure the first problem u mentioned with rough idle and low revvs is when the afm is located infront of the turbo. Apparently less problems with afm in piping... and it sounds cool, flutter/dose ftw.

U dont need a t piece for boost controller. Just cut the vac line in half insert mbc. The top port on my external gate isnt used for anything?

[detox_nath83]

nice so u have your afm in the cooler piping as well

[tombomb]

... and my mate has the coolant lines cut to the plenum chamber, because apparently it's unnecessary in oz because the line's only there for freezing weather, this true? so to keep your cool intake do this.

[Nackerz]

Hey mate, i just put the turbo setup on the vl, i had the afm in front of the turbo it ran like SHIT so i put it in the coller piping HEAPS better now...

I haven't recieved my boost controller as yet, but with out it i hit 20psi boost yesterday without pinging no tune, stock N/A injectors (got turbo ones to go in), stock ecu, and stock A6 with intercooler

[VL Berlina 5speed]

Firstly guys is mainly with the position of the AFM i have seen some in the original place B4 turbo and i have seen some mounted in cooler piping near dizzy/rocker cover.
I have read some experience problems in cooler piping as when letting off under boost sudden drop of intake pressure the Ecu does not adjust quick enough causing rough idle and low revs is this true???


Second is correct plumbing with Vac lines.. do i go say from turbo housing to a "T" piece then to bottom port of the External Wastegate and the other line from T piece goes to the Manual boost controller(MBC) then on to top port of wastegate?

As for blow Off do i plumb a line from intake piping/intake plenum to top nipple of blow off valve?

thirdly what oil is recommended for a turbo engine what viscosity should i use??
is 20W-50 ok what i use already?

and lastly what is a good timing degree for a high compression convert do i basically adjust/fine tune to avoid pinging/detonation. Yes im running a Cooler

Thanks heaps for your help in advance and feedback. hopefully some turbo experienced blokes can give us a hand?

Out...........

as said before ive heard also that its inftont of the turbo that has probs
ive got mine in the cooler piping under the rh rail and its fine

external waste gate im not sure
same with bov

oil depends ont he engines condition, im using 20w 50,

timing wise, started at factory then advanced it slightly till it was good,
alos i only run premium

Hey mate, i just put the turbo setup on the vl, i had the afm in front of the turbo it ran like SHIT so i put it in the coller piping HEAPS better now...

I haven't recieved my boost controller as yet, but with out it i hit 20psi boost yesterday without pinging no tune, stock N/A injectors (got turbo ones to go in), stock ecu, and stock A6 with intercooler

sounds like a nasty boost spike there
i would be getting your waste gate spring looked at as its spiking/creeping

[Nackerz]

i have an external gate as you have figured out lol, well when i put it on i was not getting boost at all, i had the bottom port of wastegate to front turbo housing and the top too atmosphere, no boost...

changed it around so the top port went to front of turbo housing and bottom to atmosphere, my mate was helping me (he has a bt1 and a turbo wagon) and it boosted fine and normal he said..

i have no boost controller im still waiting on it

[detox_nath83]

... and my mate has the coolant lines cut to the plenum chamber, because apparently it's unnecessary in oz because the line's only there for freezing weather, this true? so to keep your cool intake do this.

yeah i have heard about this also cheers man,,
its explained when putting an XF throttlebody on the RB30 to bypass the coolant lines from T/B

[detox_nath83]

Hey mate, i just put the turbo setup on the vl, i had the afm in front of the turbo it ran like SHIT so i put it in the coller piping HEAPS better now...

I haven't recieved my boost controller as yet, but with out it i hit 20psi boost yesterday without pinging no tune, stock N/A injectors (got turbo ones to go in), stock ecu, and stock A6 with intercooler

doesnt the N/A injectors max out at 7psi??
thats what i have heard anyways ?:P

cheers for input Guys....

Hey 5Speed have you got a pic where u have located your AFM can it be affected by water??

[Nackerz]

Well i dunno man i looked at the gauge and it went to 20psi and got speed rather quick

have a look were mine is check pics out in my ride section vl walky

[detox_nath83]

nice man nice how was the adrenaline ahhhhhhh

[Nackerz]

nah it was like sweeeeeeeeeeeeeeeeeet!!!!!!

[delcowizzid]

i have an external gate as you have figured out lol, well when i put it on i was not getting boost at all, i had the bottom port of wastegate to front turbo housing and the top too atmosphere, no boost...

changed it around so the top port went to front of turbo housing and bottom to atmosphere, my mate was helping me (he has a bt1 and a turbo wagon) and it boosted fine and normal he said..

i have no boost controller im still waiting on it

the bottom hose is where you feed boost in so it pushes open at the moment it will full boost you have 0 control of boost its trying to hold the gate shut on boost very bad idea

[Nackerz]

well how do i hook it up then as if i put it on the bottom one i get no boost???

[delcowizzid]

does the wastgeate even have a spring in it should be making at least 7psi if it has a spring in it .if you are taking the wastegate feed off the compressor housing there may be a major restriction on the way to the manifold and its opening the wastegate before the plenum sees boost but it would have to be a big restriction LOL

[Nackerz]

yes it has a spring in it mate i checked that out, even tried to figure out what psi spring it was.

what do you mean by taking the feed off???

sorry bro

[delcowizzid]

the pressure feed to the wastegate is it from the turbo compressor housing on a brass nipple of from the plenum

[Nackerz]

its from the brass nipple on the front of the turbo housing. heres a pic

its just under the blu silicone joiner there in the middle and goes to the wastegate

add me to msn if you want too help me out instead of waiting for me to reply as i would love to get this fixed asap
djsexy-boi@live.com.au

NOTE: im always signed in but appear offline so just send me a message and i will reply

[Nackerz]

View My Video

[detox_nath83]

can the AFM go after turbo but b4 intercooler without any probs (In the red piping on Nackerz Setup)as i have recieved a cooler kit today.. i can cut the afm into it as Nackerz has done on the walky if not but would be easier if it can go b4 cooler.

[Nackerz]

pretty sure it can mate ... my mate has his after the cooler but at the bottom near the fan and that is just to hide it but still works....

as long as its after the turbo and before the throttle body your right i think? im not 100% sure so maybe someone else can help on that one

[delcowizzid]

after the cooler makes more fueling changes for air temp its a lot colder after the cooler

[detox_nath83]

pretty sure it can mate ... my mate has his after the cooler but at the bottom near the fan and that is just to hide it but still works....

as long as its after the turbo and before the throttle body your right i think? im not 100% sure so maybe someone else can help on that one

i would be worried about water that low down. i may put it where u have Nackerz quite easy really then it is up high and after the I/C

Thanks fo your help guys appreciate it

[Nackerz]

yeah nah probs