Car won't go into boost?

[blasphemy101]

Magic.


Ive had this same issue, Maybe the ms was acting up or the tune was bad but it ran pig rich up close to boost fuel maps

I could see you running rich close to boost (@100 kpa/WOT) if the MS was interpolating from the next row of cells up.

Extreme example: 100 kpa row has VE values from 80-100. The next row up is set very close at 105 kpa with VE values from 120-150.

It comes down to how you lay out the fuel maps, but I could see it happening.

[travish325]

I could see you running rich close to boost (@100 kpa/WOT) if the MS was interpolating from the next row of cells up.

Extreme example: 100 kpa row has VE values from 80-100. The next row up is set very close at 105 kpa with VE values from 120-150.

It comes down to how you lay out the fuel maps, but I could see it happening.

Yerp.

I edit that last post tcphoto, Mis understood you

[Jaxx_]

And MS also reads air flow. Megasquirt reads air flow, if their was no boost(not an increase in air flow) why would the fuel still enrich?

MS does not read air flow in the stock form. If you're talking about a MAF setup, it does, but MAP would not read the air flow, and that's the reason your theory works. If it did read airflow and the MAF was BEFORE(or before a massive boost leak) the turbo, it would be running rich as fuck. Remember megasquirt is Speed Density in regular configuration.

While what you said is true, the explanation was wrong.

If the turbo was within spec when you installed it on the car, and it's within spec now, I would have little reason to believe that the turbo is bad. When you get down to it, they have one moving part. travish325 - I think you have a little confirmation bias going on.

[travish325]

travish325 - I think you have a little confirmation bias going on.

I know I know. it just sounds sooo familiar, It could be unbalenced or the bearings can be shot (hints the whining sound)

[TC|Photography]

MS does not read air flow in the stock form. If you're talking about a MAF setup, it does, but MAP would not read the air flow, and that's the reason your theory works. If it did read airflow and the MAF was BEFORE(or before a massive boost leak) the turbo, it would be running rich as fuck. Remember megasquirt is Speed Density in regular configuration.

While what you said is true, the explanation was wrong.

If the turbo was within spec when you installed it on the car, and it's within spec now, I would have little reason to believe that the turbo is bad. When you get down to it, they have one moving part. travish325 - I think you have a little confirmation bias going on.

Thanks thats what was going on in my head but I couldn't explain it thoroughly. Sorry about that.

Yerp.

I edit that last post tcphoto, Mis understood you

Get my account approved at E30tech and you'll be forgiven lol my username over there is:

yourapeein

[travish325]

Ill do my best!

[Pootis]

I believe it is a combination of the turbo needing to at least be cleaned inside if not rebuilt and doing another boost leak test to see if I missed something but the fact that I make 0 boost at WOT means I would have to have a massive boost leak like the size of Perez Hiltons b-hole

[travish325]

Maybe you have a rat in your charge piping

[Pootis]

I have a short video of the car and you can hear the whine at the very end when I rev it. (this is before I fixed the wastegate valve seat exhaust leak)
The more I read the more I think travish is right and my turbo is blown. Would a rebuild fix that as long as the blades aren't crazy bent or anything? You can see the puff of smoke oil leak at the end.

[Exodus_2pt0]

Not sure if you answered this yet, but how does the turbo feel when you spin it by hand?

I think your turbo is shot. I'm of the opinion that turbo rebuilds aren't something you diy. Send it out for a rebuild, balance, and be done with it.

[travish325]

Not sure if you answered this yet, but how does the turbo feel when you spin it by hand?

I think your turbo is shot. I'm of the opinion that turbo rebuilds aren't something you diy. Send it out for a rebuild, balance, and be done with it.

Exactly. Best to send it off, Or take this opertunity to upgrade????

[Pootis]

I talked with a holset dealer today who rebuilds turbos (flame suit on) and he said he has been rebuilding turbos for 30+ years and he has never balanced a holset and the rebuild is pretty easy (I know obviously something went wrong the first time lol) I am just hoping the exhaust blades are mangled I have looked at the intake blades and they look fine

[travish325]

That sound sounds like f'd up bearings.

[Pootis]

That's what I was afraid of I just don't understand what could have caused the damage so fast?

[ak-]

Not priming the system on installation / oil feed line.
I hope it's not your turbo lol.

How are you doing the vacuum leak test anyways?