Boost Issues With My R32 Gtst

[wsntm3]

Hi People,

I was participating in a burnout comp at my local Dirt Circuit meeting, when it was my turn it started fine but once in 2nd gear the power started to drop. I tried to clutch kick it to bring the revs back up but would have no affect. After the meeting I brought it on boost from idle and it was fine.

I am stuck for ideas as what it could be and after any help if it has happened to anyone else. The car has done 130XXX kms, so I was thinking that the turbo is starting to fail from age.

Any help will be much appreciated.

Cheers Adam.

[SECURITY]

possibly your clutch

[astrotristan]

what boost are you running?

[wsntm3]

The car runs standard boost as not long off defect. Prior to that it was running 0.85 BAR for about a year, then sat for 2.5 years while defected. It also runs an Extreme button clutch with lightened flywheel. Other mods are a 3" exhaust from turbo back, front mount, Bosch 044 fuel pump and splitfire coils.

[wsntm3]

Hi people,

Still got boost probs, but now have more info. I changed the fuel filter and put my factory BOV back, but still have problem. What happens is that, it pulls hard at full boost up to 5500rpm but then drops to nothing and runs as if NA if you keep it planted or let off and put foot back down. The only way to get full boost back is to stop and take off again, but keep revs under 5500rpm.

I'm thinking its wastegate actuator issues but I'm open to other ideas to check. I also plan to change my plugs to see if that helps.

Any help much appreciated.

[Ricochet]

is it spitting or misfiring??

if it is then ya coils might have shat themselves,

does your boost gauge read vaccuum or positive boost still just no response???

[wsntm3]

is it spitting or misfiring??

if it is then ya coils might have shat themselves,

does your boost gauge read vaccuum or positive boost still just no response???

It doesn't misfire and its got splitfire coils. The boost gauge reads positive pressure till 5500rpm then it drops all boost to vaccuum, but if I back off till the revs drop under 4000rpm then put the foot back down, the boost comes back till I get to 5500rpm again, then it drops off.

After the boost has dropped, if I keep my foot down it feels as if it is NA, and has popped a couple of times. But that mite be due to over fuelling.