odessy Posted June 18, 2012 Share Posted June 18, 2012 Just got a r32 and am new to turbos. Was told that it was running 12psi by a mbc. I did some reading about adjusting this and read that the car won't make any boost in neutral when revved... but it does. The aftermarket boost gauge sits in vaccum at idle but when I put my foot to the floor the boost will climb to about 10psi and it's not just a quick spike either. Can hear it spooling up. Supposedly just running the stock turbo, pod filter and 3inch exhaust with high flow cat. The mbc is tightened to maximum... Is this normal? Link to comment https://www.sau.com.au/forums/topic/402828-boost-in-neutral/ Share on other sites More sharing options...
The Dan Posted June 18, 2012 Share Posted June 18, 2012 either the gauge is wrong or you have timing issues. Link to comment https://www.sau.com.au/forums/topic/402828-boost-in-neutral/#findComment-6404922 Share on other sites More sharing options...
odessy Posted June 18, 2012 Author Share Posted June 18, 2012 Well I can hear the turbo spooling and the blow off valve, I presume, when I take my foot off. Link to comment https://www.sau.com.au/forums/topic/402828-boost-in-neutral/#findComment-6404931 Share on other sites More sharing options...
Manuel Kasko Posted June 18, 2012 Share Posted June 18, 2012 Mine used to make a few psi on stock turbo. Not any where near 10 but Link to comment https://www.sau.com.au/forums/topic/402828-boost-in-neutral/#findComment-6404936 Share on other sites More sharing options...
Hadouken Posted June 18, 2012 Share Posted June 18, 2012 if you have a atmo bov aka psshhh then it will build boost in neutral Link to comment https://www.sau.com.au/forums/topic/402828-boost-in-neutral/#findComment-6404937 Share on other sites More sharing options...
odessy Posted June 18, 2012 Author Share Posted June 18, 2012 Yeah that is the noise I am refferring to. Will the stock BOV's not make any noise as they vent back in? Link to comment https://www.sau.com.au/forums/topic/402828-boost-in-neutral/#findComment-6404946 Share on other sites More sharing options...
Manuel Kasko Posted June 18, 2012 Share Posted June 18, 2012 if you have a atmo bov aka psshhh then it will build boost in neutral Hahaha dont start another one of these (I had stock BOV btw) Link to comment https://www.sau.com.au/forums/topic/402828-boost-in-neutral/#findComment-6404951 Share on other sites More sharing options...
gotRICE? Posted June 18, 2012 Share Posted June 18, 2012 Tis true though. My stock turbo would make good boost in neutral. The GT30 however does not lol Link to comment https://www.sau.com.au/forums/topic/402828-boost-in-neutral/#findComment-6404954 Share on other sites More sharing options...
odessy Posted June 18, 2012 Author Share Posted June 18, 2012 I think it has the stock bov. I thought one vented to the atmoshpere will cause problems as it mess' with the afm? Link to comment https://www.sau.com.au/forums/topic/402828-boost-in-neutral/#findComment-6404969 Share on other sites More sharing options...
TiTAN Posted June 18, 2012 Share Posted June 18, 2012 it will if you are using the AFM Link to comment https://www.sau.com.au/forums/topic/402828-boost-in-neutral/#findComment-6404974 Share on other sites More sharing options...
odessy Posted June 18, 2012 Author Share Posted June 18, 2012 Yeah it's the stock one and is vented back in just after the podfilter and afm. How can timing affect this? Should I be worried and is there any way of telling what is causing this? Link to comment https://www.sau.com.au/forums/topic/402828-boost-in-neutral/#findComment-6404984 Share on other sites More sharing options...
odessy Posted June 18, 2012 Author Share Posted June 18, 2012 Also the boost gauge is on a t connection near the throttle body. Link to comment https://www.sau.com.au/forums/topic/402828-boost-in-neutral/#findComment-6405010 Share on other sites More sharing options...
odessy Posted June 18, 2012 Author Share Posted June 18, 2012 If the manual boost controller is set to maximum could this cause it as the wastegate will not open at all or should there still be insufficient flow to spool the turbo up? Link to comment https://www.sau.com.au/forums/topic/402828-boost-in-neutral/#findComment-6405058 Share on other sites More sharing options...
Hadouken Posted June 18, 2012 Share Posted June 18, 2012 Hahaha dont start another one of these (I had stock BOV btw) Couldn't help it... Sick photo btw. I can make absolutely nothing out! Link to comment https://www.sau.com.au/forums/topic/402828-boost-in-neutral/#findComment-6405095 Share on other sites More sharing options...
odessy Posted June 18, 2012 Author Share Posted June 18, 2012 That on is a bit better. Clear tube goes to the boost gauge. The car starts and idles fine. Sits at -20psi on idle. Have only driven it once a week ago when I first got it as I don't have a licence and it isn't rego'd but seem to drive fine. Link to comment https://www.sau.com.au/forums/topic/402828-boost-in-neutral/#findComment-6405103 Share on other sites More sharing options...
Hanaldo Posted June 18, 2012 Share Posted June 18, 2012 If the manual boost controller is set to maximum could this cause it as the wastegate will not open at all or should there still be insufficient flow to spool the turbo up? Yeh in neutral there is no load, shouldn't be enough flow to spool to 10psi. OP, I'd get your timing checked mate, or it could be running super rich? Link to comment https://www.sau.com.au/forums/topic/402828-boost-in-neutral/#findComment-6405120 Share on other sites More sharing options...
odessy Posted June 18, 2012 Author Share Posted June 18, 2012 Is that the right place for the boost gauge? How will the timing cause this and are there any other symptoms that would show too? Link to comment https://www.sau.com.au/forums/topic/402828-boost-in-neutral/#findComment-6405124 Share on other sites More sharing options...
gotRICE? Posted June 18, 2012 Share Posted June 18, 2012 I wouldnt use that for a boost gauge. Just take if off where the stock one took the feed at the back of the plenum. Let the FPR have its own special vac source If the timing is out it could be letting some of the combustion out into the exhaust early, that would let the turbo spool. Link to comment https://www.sau.com.au/forums/topic/402828-boost-in-neutral/#findComment-6405132 Share on other sites More sharing options...
Manuel Kasko Posted June 18, 2012 Share Posted June 18, 2012 Take to mechanic and get timing light See timing light thread (it's not a tarp trust me) http://www.skylinesaustralia.com/forums/topic/402154-what-does-a-timing-light-do/ Link to comment https://www.sau.com.au/forums/topic/402828-boost-in-neutral/#findComment-6405134 Share on other sites More sharing options...
Manuel Kasko Posted June 18, 2012 Share Posted June 18, 2012 GotRICE You got a photo of your interior to show him a boost gauge haha Also a pic of engine bay to show where to hook it up Link to comment https://www.sau.com.au/forums/topic/402828-boost-in-neutral/#findComment-6405137 Share on other sites More sharing options...
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