needing some advice on test mode

[tankbot34]

Hi guys. Recently my boost went from normal to almost zero then upon accelerating now i get hesitation and stuttering. it now throws code 66 in second gear and no boost. still drives if i feather the throttle tho. the nite previous to this im sure i heard a pressurized sound coming from the primary turbo side. i have twin bd5 legacy rs. in test mode where i\'d see the iacv and ecv rods moving they dont at all now. also i had oil leaking from the inside of the exhaust running to tip then dripping out.

im wondering would a blown turbo seal cause this or hoses under tmic? cheers

[Joker]

whats test mode? never heard of that before

[tankbot34]

test mode is where you connect green connectors under dash near steering column to put into test mode. connecting black only reads codes and both is diagnostic mode

[Rosssub]

Fault code 66 - Twin turbo system, Normally a BBOD problem.

If your ECV and IACV aren\'t doing anything in diagnostic/D-mode, then you must have no vacuum in the BBOD.

Hose #12 from front/centre manifold, is the vac feed for the bbod and vac tank. Hose #12 goes through the BBOD then comes out the bottom, connected to the vac tank hose.

If this vac hose comes off under the BBOD, the vac tank bleeds out, (pressure noise). Plus you will have a big boost/vac leak from the manifold.

How bad is the oil out the exhaust? Could be years of blow by build up, might be time to clean out your tmic and run a can of upper cylinder cleaner?

[boon]

I\'m going with split vac tank or associated plumbing.

[tankbot34]

thank you guys taking it to a guy Monday to do a boost leak test on it. it would of had buildup blowby as the damn thing was overfilled almost 1 quarter above the f mark. I didn't realise this wen I took to get oil changed rather than do it myself. im kinda pissed off with the garage that did this but I shuda checked my dipstick would've been about 2 weeks of being over the f mark. whats the worse case scenario for a blowby buildup guys?