R32 Gtr Hks T04z Power Loss

[godzl4]

Hi guys I've been having some problems with my gtr I have a hks t04z on a stock rb26.

The turbo makes boost (18psi) but there's no punch from the car anymore. When I first did the conversion it was super fast an put u back into your seat but lately it doesn't put u into your seat at all.

The boost gauge an greddy boost controller both say that 18psi of boost is made when driving but the car just does nothing.

I've checked all over for boost leak/vacuum loss all ok

I've replaced the clutch with a new twin plate.

Engine has 175-180 psi of compression

Wastegate seems to be working it's not stuck an vac lines R ok

The turbo has some play in the compressor shaft has some forward an backwards movement 1-2mm max an has some up an down too.

It does blow some white smoke from time to time.

Can anyone please help with a possible test or check I can do it sort the problem out I've done about all I can think of.

Thanks

Guys

[MrStabby]

Is it still spooling up at the same rpm, or later? (might be collapsed cat).

[godzl4]

Still spools at the same rpm an it's got a decat in it

[GTR_JOEY]

Same reply as in your old thread... Has cam timing changed?

Cam gears haven't slipped

Where you measuring boost from?

[Hadouken]

Do you have a wideband?

it might lean out. OR is what you are explaining that it doesn't "feel" the same? Meaning you just got used to the car.....

[godzl4]

Yeah I have a haltech platinum pro with the wideband O2 kit.

I'm taking vac readings from the fuel reg port, stock boost gauge port an where the stock boost solenoid went.

An it's down on power to the point a stock v5 golf gti can pull away from me

( mine had 450hp 3 months ago )

[godzl4]

Cams R stock an the cas hasn't been touched since tune

[Hadouken]

So AFR's are good?

[godzl4]

No afm anymore lol

[Ben C34]

Take back to shop.

Stock guessing.

[Hadouken]

No afm anymore lol

you cereal?

You shouldnt even be fault finding if you dont know what AFR's are.

Take it to a mechanic