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SignUp Now!Norbs, I would find a way to decrease that oil pressure, or get ready for lots of oil leaks in your near future. 40 at hot idle is too much in my opinion. That's what I get when I cruise around on the street at 2500rpm. With your pressure, every time you want to drive your car, you have to let it warm up 10-15 min before driving it..........
norbs how did you calibrate the sensor??
norbs said:Seems I can;t get it the boost up, and oil psi down....everything works backwards for me........................![]()
Sounds like your car needs some Viagra...
What do you think your boost problem is from?
Converter to tight, wastegate stuck open??
AG
I would check for potential wastegate leak or if its stuck open for some reason. Maybe some welding slag or something holding it open.I really think its an excessive backpressure issue, I need to put a bung in to log it. I have the heavy spring in the gate now, I guess I have to add the 2nd spring next. Right now I have the boost duty cycle set to 0% I am trying to find Min boost..I'm still dialing in the VE table so the correction is still all over.
Why is the fuel pressure 78 when the boost is 5?
I would check for potential wastegate leak or if its stuck open for some reason. Maybe some welding slag or something holding it open.
Allan G.
I will have a look at it today, does seem odd the spring I put in is at least 3x the pressure I took out, I wish I would have measured backpressure, then could see more what is going on..
Are you saying your backpressure is so high at 5 psi it is opening the WG? I find that very hard to believe. During spoolup the backpressure will climb a little while the wheel is being accelerated, but not that high. What turbo are you running, what size WG and what spring? You are the "king" of unique problems![]()
Maybe it's the 1.01 housing?
It could be the quickspool valve now has changed that 1.01 to .5 ish? Lets do some quick math. the gate has a surface area of 3.14 sq inches, so to hold back 1 psi we would need 3 psi spring, it felt about 25 psi force to push the gate spring in, if we had 8 psi backpressure at 5 psi boost, I would seem about right. I put the 2 springs in , I needed help from a neighbour to install it or I would have never got it together, unless I would have to use my foot and stand on top of it. I could not see any evidence of the valve leaking on the seat.
How is the plumbing to your wastegate set up? What sort of boost control system are you using?