turboturner

iTrader: (6)

Went out for a a spirited drive the other day car was performing A1...Then the next day starts it up rough as chuff before it gets warm almost sounding like it was misfiring slightly..anyway went out for a spin and the performance has well tailed off..boost has dropped about .5 psi the knock correction is reading 5 degrees less than before and it just seems to have lost some puff...
I have done the following to check to see if these were the culprits..
Hoses off and resealed.
new dump valve gasket(oe valve fitted)
tried different dumpvavle(forge).same problem
new y-pipe gaskets...
reset ecu through my psi3..
check via obd 2 for misfires..non detected.

no different

Hit a brick wall at the moment..
warranty is up too..bummer

Any Ideas would be a great help

saiklon

How old are your spark plugs? Try pulling them out, cleaning them and measuring the gap.

jimes

whilst the plugs are out do a compression test, last time I went for a spirited drive the lands on piston 4 decidied to melt!

turboturner

iTrader: (6)

They are about a month and half old..fitted some 7's when i had a remap..I had that thought maybe one has maybe come a bit loose should hope it hasnt blown the rings or lands been through that far to many times with my Pulsar..it was mapped at a nice safe level..would turbo problems kick up these symtons..

saiklon

I would give the plugs a check, 7s are more liable to fouling than 6s since they are colder plugs.

Turbos rarely fail catastrophically (unless you do something like leave off the oil lines). They usually just reduce in performance over time.

turboturner

iTrader: (6)

Will give the plugs a check plus what is the compression ratings on these engines around the 150's..I know you are meant to do it whilst the engines hot but by the time you get the plugs out of the boxer it will be cold...one of the crapiest jobs to do on this car..

turboturner

iTrader: (6)

Still looking for some suggestions on power down..checked all the usual plus re-gaped all the plugs..
What symptons would you get with a leaking downpipe or exhaust..plus The actuator went on my turbo previous and now when i checked the inlet and intercooler there is fresh oil deposit which hasnt come from the breather because i have a hyperflow catch can..
I think the Forge actuator may be shadowing a bigger turbo problem