Jump to content
SAU Community

Recommended Posts

i was going to clean AFM when i noticed that my air tube (the one that goes to my turbo) is full of dust, mud and probably oil - all this is mixed in there.... then i took off all pipes that goes in and out of intercooler - they all had oil in them... is it normal? i guess it's not. my AIR filter looks ok... air tubes is without cracks, i don't understand how all that mud got in there...

is there a way to clean all the pipes? i guess all this mud gets into the engine too :P

also, when i remove AIR filter when the car is running (idle) the engine's revs start to jump and engine works unstable...

i guess dirty pipes are the reason of this?

Link to comment
https://www.sau.com.au/forums/topic/22270-air-tube-and-turbo-piping/
Share on other sites

the car idles fine with air filter, but once i remove it - revs start jumping. but engine never stalls. maybe it's becuase more air is coming in and ECU do not control fuel when idling?? but i think that air flow increase is very very little without air filter.

confused again :P did you notice anything similar to this on your car, Boostd?

btw, what is TPS?

The ECU does control fuel at idle(closed loop) removing your Air filter will stuff up your vaccum levels and the wierd idle is you ECU trying to control whats going on. I find my car idles wierd when its due for an oil change. When to oil gets to thin... ie less than 5w. The manual recommends 7.5w 30 oil. I have tried 0w 40 and my car hates the thin oil at idle and starts hunting.

TPS= Throttle Position Sensor

i've found out that different oils with same specs act differently.

i used Shell 5w40 (the worst oil - doesn't keep with load), Castrol 10w60 - quite good and it looks like my turbine likes it and Hassol 5w40 - same quality as Castrol, but MUCH cheaper (use it now)....

though i want to try Motul oil, once it will be delivered here. heard it's good

Mobil here (in Russia) is of a VERY bad quality... maybe it's russian mafia who spoils good oil and selling fake instead of original :D

anyway, 0w40 is too liquid for turbo cars (imho), as the temperatures are much higher in tubro cars and this oil can just dissappear in some parts of the engine and all the pulleys (or gears - forgot the right word) will work without oil film... that happened to my engine with Shell 5w40 - my turbine started to switch off under heavy boost...

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • That is surely the biggest gathering of Stageas in North America, ever!
    • Remember kids - if you can't afford to buy 2 GTRs......
    • I know people cry at the price of the Getrag 12-14k for a conversion now, but it really is a nice mid point. Not going to get change from 10k on a gearset installed.  $30k++ for sequential.   I know you run the risk of a damaged used one and parts are hard to get but as a street car gearbox its really hard to beat. If you enjoy a more traditional manual, its the choice no question.     
    • Time to decide what’s more import, your power level or your budget because you’re going to struggle to keep both 
    • Our Southern Highlands Cruise is proudly registered with “R U OK?” Day.  Sometimes the best way to check in on your mates is by getting out for a drive together. Sharing a common passion like cars creates the perfect space to chat, connect, and support each other.  A simple “R U OK?” can make all the difference. Let's enjoy the drive, the company, and look out for one another. PLEASE WEAR YELLOW FOR “R U OK?” DAY Sunday 14th September 2025 9:30AM Meeting Crossroads Homemaker Centre 10:00AM Cruise Departure Via Old Hume Hwy 11:45AM Arrival at Mittagong RSL Club Meet Location: Crossroads Homemaker Centre Final Destination: Mittagong RSL Club *Disclaimer* There will be a lead and follow car so no one should get lost. If you would like to attend or bring others along please put your name down and a +1 as numbers will be needed prior! This is NOT a race and we will all be adhering to all road rules. If this is what you want please come to one of our many track days. This is an official SAU:NSW event and will be run under a CAMS permit. One of the things that really sets our club apart is our commitment to being true enthusiasts. When on normal roads we strive to maintain good relations with the authorities as well as the public in general. When attending one of Skylines Australia NSW events please try to: • Be aware of surrounding environment and act accordingly. • Drive courteously on the state’s roads as a true enthusiast should. • Understand how important it is to maintain the good name of SAU NSW and thus, treat others accordingly. • Any misbehavior will not be tolerated and you will be asked to leave.
×
×
  • Create New...