chris2o2 Posted September 7, 2008 Share Posted September 7, 2008 Not again i hear you say ! But wait , i'm just after someone to confirm my suspicions that it is just a small leak somewhere and nothing more sinister. The cars making about 0.4 on first turbo then 0.5 on the second , im sure last month i had noticed it was down slightly although not as low as it is now. The car still feels quite strong and accelerates well , just a bit slower really. I had a friend take this small video of my boost gauge to double check this - foot flat down through third .... Most of the pipes you can see in the engine bay are new although the ones hidden are still original , so there may be some worn/damage ones back there i need to check . IC piping maybe ? The BOV seems pretty good , i tried the standard toyota one again this afternoon to see if that made a difference but no. Any other suggestions ? Cheers Quote Link to comment Share on other sites More sharing options...
chris2o2 Posted September 8, 2008 Author Share Posted September 8, 2008 Wastegate VSV im thinking now after doing some more research ? Quote Link to comment Share on other sites More sharing options...
botachi Posted September 9, 2008 Share Posted September 9, 2008 Most likely VSV problem. Had somewhat similar problem too. Just to sort it out and get my car running I ditched the sequential operation and did a TTC mod. Slightly laggier but power's great plus the supposed long-term reliability benefit for the turbos is always welcome. Quote Link to comment Share on other sites More sharing options...
cwtt Posted September 10, 2008 Share Posted September 10, 2008 Most likely VSV problem. Had somewhat similar problem too. Just to sort it out and get my car running I ditched the sequential operation and did a TTC mod. Slightly laggier but power's great plus the supposed long-term reliability benefit for the turbos is always welcome. Yes check ALL of your VSV's and vacuum hoses. Also check to see if you have any boost leaks. Do not ditch the sequential system. TTC creates a ton of lag and makes no more power. It was meant to be used as a diagnostics tool. It has also never been proben to be any more reliable to the turbos. Just take your time and go over everything. Most likely there is a vacuum line or something simple that has come off. Quote Link to comment Share on other sites More sharing options...
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