rb20det help needed

[mberistianos]

I have a rb20det and it feels like it isn't building boost under load. it will build boost if I am just sitting and reving the engine but it will not get up and go when I am driving. I know for sure a ka24de has more power than this right now. it has a garrett t3/t4. 650 injectors. front mount intercooler. plenum intake. aftermarket coil packs. stock igniter box. walbro 255. ecu was sent out to be tuned for what I have and to be around 14-18 psi of boost. it shows 0psi when I am driving it. it also seems to be running rich. the fuel pressure is at 60 when idling. if I go any lower the power cuts out.

[brndck]

I'm guessing either your wastegate is shit or the vacuum line to it is incorrectly routed or leaking. Either that or you have a boost leak.

[Sileighty_85]

if your boost gauge reads 0 psi when driving, then you have a big boost leak which would also explain the engine running rich.

Start with basics kid. Did you even look at the engine before posting this?

[mberistianos]

I started the car and got underneath and the waste gate is not sealing. I took it off and it's cx racing and it doesn't seal at all. Any input?

[Sileighty_85]

find out why it dosent close, IE Rust/Carbon build up ans clean it

Or buy a Tial

[brndck]

I started the car and got underneath and the waste gate is not sealing. I took it off and] it's cx racing] and it doesn't seal at all. Any input?

There's your problem right there.
Buy QUALITY components and you won't have these kind of issues.

[supersayianjim]

or maybe you didn't install the wg gasket properly/ at all?

[mberistianos]

I had a spare waste gate laying around and I noticed that the other waste gate did not have a fire ring on it. So there was the sealing problem. Now that I have changed that. My car won't start..... So I will pull it lose tomorrow and try to start it but i don't see how that would affect it not starting. It just cranks and cranks. And all I messed with was the waste gate.

[mberistianos]

And thanks for the help.

[mberistianos]

So I pulled the wastegate off and it started then I put the wastegate back on and it started so thanks everybody. It must have been an electrical issue.