IHI boosting funny ??

[ibizacupra]

Unitronic seem to use MBC/EBC's in their BT codes, so its not unusual... but its clearly a symptum of trying to make the me7 do things it was'nt designed for.

eg: >2500mb map sensors, large MAF's, huge injectors,


I went standalone for a good reason. One stop box for control and integrated solution, where the maps are 100% transparent as to what they do written with software which is designed to allow you to map them.

My preference for big BT is towards standalone these days. It does what I tell it to when I tell it.

Managing boost control outside of ME7 seems the easiest approach than banging your head against ME7 trying to do something else.

 

[HTC]

I do like the idea of standalone, and you have certainly got me thinking for the future. I also hate the secrecy that surrounds tuning ME3 or 7.

I guess there is nothing stopping me buying standalone, fitting the correct guages and learing to map myself or having it mapped elsewhere. I like this concept.

Hmmmmmmmmmmm

 

[caveo]

So if the wastegate is blowing open , is my turbo pretty much fooked and would any of you recamend replacing the N75 with a forge MBC ?

 

[jamiebennett81]

So if the wastegate is blowing open , is my turbo pretty much fooked and would any of you recamend replacing the N75 with a forge MBC ?

doesn't the wastegate blow open though if there is too much flow i.e. a backdraft, and then because it cannot flow anymore the wastegate is then opened?

 

[ibizacupra]

So if the wastegate is blowing open , is my turbo pretty much fooked and would any of you recamend replacing the N75 with a forge MBC ?

I had wastegate blow open issues on my IHI hybrid, PE1820. Std actuator (9psi) was insufficient to hold closed when dialing in >20psi boost in the upper rpms.. TOO MUCH EXHAUST MANIFOLD PRESSURE is the cause. Turbine/exhaust housing cannot flow enough, creates backpressure, which can overcome the wastegate penny and actuator trying to hold it.

Remedy as 1st level is a higher psi actuator to "hold" it shut and overcome the manifold pressure. Its a symptum however of not being a well balanced flowing system, if there is that much turbine back pressure, it has to be hurting performance and flow. (an over sized compressor wheel for example like in a PE1820)

consider a forge actuator and 1bar spring if not already running @ that level

 

[jamiebennett81]

I had wastegate blow open issues on my IHI hybrid, PE1820. Std actuator (9psi) was insufficient to hold closed when dialing in >20psi boost in the upper rpms.. TOO MUCH EXHAUST MANIFOLD PRESSURE is the cause. Turbine/exhaust housing cannot flow enough, creates backpressure, which can overcome the wastegate penny and actuator trying to hold it.

Remedy as 1st level is a higher psi actuator to "hold" it shut and overcome the manifold pressure. Its a symptum however of not being a well balanced flowing system, if there is that much turbine back pressure, it has to be hurting performance and flow. (an over sized compressor wheel for example like in a PE1820)

consider a forge actuator and 1bar spring if not already running @ that level

thats what I meant, back pressure, not backdraft

you did explain it to me on Sunday Bill, but could not remember it exactly to regurgitate what you told me

Caveo, what actuator are you running? i.e. have you done a static pressure test?

 

[caveo]

I beleve im running the std actuator , sooo i,v ordered a forge 1 with 1 bar spring to be fitted on thursday . Do you guys recamend some silicone hose fron N75 to it??

 

[jamiebennett81]

I beleve im running the std actuator , sooo i,v ordered a forge 1 with 1 bar spring to be fitted on thursday . Do you guys recamend some silicone hose fron N75 to it??

why not try an MBC or EBC caveo? it certianly makes things a lot smoother from trying the MBC over the N75 before

I know its a solenoid, but moff commented the same as well