TXR05 Member 181 Member For: 13y 11m 1d Gender: Male Location: Brisbane QLD Posted 30/05/12 04:33 AM Share Posted 30/05/12 04:33 AM (edited) Alright, so I still haven't found where my 80HP has gone. But I put it onto the 10 PSI tune from my 12PSI tune and went for a drive,Whacking it in 3rd and planting it to feel the power differnce it got to about 5000RPM and all of a sudden just lost all its power then putting it into 4th it was like traction control was on making a funny 'brrrrr' noise. But putting my foot down in 4th it struggles then all of a sudden frees up and is fine. ( no dash lights or code come up on my scan gauge ) confused I did it again and sure enough same thing lost all power at 5000RPM and same thing in 4th. But this time I was looking at the boost gauge, and it was over boosting to 14PSI then at 5000 drops most of its boost down to 4PSI!So I'm a little confused on what this would be with no error codes and only doing it in 3rd.So I put it back onto the 12 PSI tune, and was only over boosting to 13PSI ( been doing it for a while. ) but no boost cut and no problem in 4th.So what can I replace to fix this ? Edited 30/05/12 04:33 AM by TXR05 Link to comment https://www.fordxr6turbo.com/forum/topic/80385-boost-cut-or-something-advice/ Share on other sites More sharing options...
senna_T Forged Member Lifetime Members 15,818 Member For: 18y 3m 8d Gender: Male Location: SW Sydney Posted 30/05/12 04:39 AM Share Posted 30/05/12 04:39 AM Is it custom tuned or just generic? Sounds like you may be getting valve float or fuel surge... Link to comment https://www.fordxr6turbo.com/forum/topic/80385-boost-cut-or-something-advice/#findComment-1245642 Share on other sites More sharing options...
TXR05 Member 181 Member For: 13y 11m 1d Gender: Male Location: Brisbane QLD Posted 30/05/12 04:42 AM Author Share Posted 30/05/12 04:42 AM custom tune. Definatly not fuel surge. I know what that feels like.Forgot to add in any other gear on the 10 PSI tune that it boosts to 10 PSI. Link to comment https://www.fordxr6turbo.com/forum/topic/80385-boost-cut-or-something-advice/#findComment-1245643 Share on other sites More sharing options...
senna_T Forged Member Lifetime Members 15,818 Member For: 18y 3m 8d Gender: Male Location: SW Sydney Posted 30/05/12 04:46 AM Share Posted 30/05/12 04:46 AM So its only in 3rd? That's a bit strange...I would say it has something to do with the tune, there is no reason mechanically (based on load) that it would only be overboosting in 3rd gear, if it was going to overboost it would be doing it in 4th, 5th and 6th too since the load. Link to comment https://www.fordxr6turbo.com/forum/topic/80385-boost-cut-or-something-advice/#findComment-1245645 Share on other sites More sharing options...
davidald Me Donating Members 360 Member For: 18y 1m 17d Gender: Male Location: Adelaide Posted 30/05/12 05:20 AM Share Posted 30/05/12 05:20 AM http://www.fordxr6turbo.com/forum/topic/23287-overboosting/ Link to comment https://www.fordxr6turbo.com/forum/topic/80385-boost-cut-or-something-advice/#findComment-1245663 Share on other sites More sharing options...
senna_T Forged Member Lifetime Members 15,818 Member For: 18y 3m 8d Gender: Male Location: SW Sydney Posted 30/05/12 05:54 AM Share Posted 30/05/12 05:54 AM In all seriousness that thread has no result as to whether the OP fixed it... Link to comment https://www.fordxr6turbo.com/forum/topic/80385-boost-cut-or-something-advice/#findComment-1245679 Share on other sites More sharing options...
TXR05 Member 181 Member For: 13y 11m 1d Gender: Male Location: Brisbane QLD Posted 30/05/12 06:05 AM Author Share Posted 30/05/12 06:05 AM Read that thread. Why would it drop all boost then act funny in 4th then just all of a sudden come good. Not problem in 1st 2nd or 4th with boost creeping over what it should. 12 psi tune is just fine in any gear. Apart from STILL not coming onto boost as hard as it normally did. I have problems spinning 1st and second in the wet. Link to comment https://www.fordxr6turbo.com/forum/topic/80385-boost-cut-or-something-advice/#findComment-1245688 Share on other sites More sharing options...
senna_T Forged Member Lifetime Members 15,818 Member For: 18y 3m 8d Gender: Male Location: SW Sydney Posted 30/05/12 06:29 AM Share Posted 30/05/12 06:29 AM Have you changed valve springs? Can you repeat this all the time when its on the 10psi or does it only do it sometimes? If you can repeat it then load up the 10psi tune and swing past your tuner and show him what is happening Link to comment https://www.fordxr6turbo.com/forum/topic/80385-boost-cut-or-something-advice/#findComment-1245705 Share on other sites More sharing options...
TXR05 Member 181 Member For: 13y 11m 1d Gender: Male Location: Brisbane QLD Posted 30/05/12 07:03 AM Author Share Posted 30/05/12 07:03 AM Yes, she has atomic valve springs.Happened the 3 times I tried on the 10 PSI tune.Might have to swing into a tuner and ask what the go is. Was just hoping one of you guys knew what the problem was lol. Link to comment https://www.fordxr6turbo.com/forum/topic/80385-boost-cut-or-something-advice/#findComment-1245729 Share on other sites More sharing options...
senna_T Forged Member Lifetime Members 15,818 Member For: 18y 3m 8d Gender: Male Location: SW Sydney Posted 30/05/12 07:13 AM Share Posted 30/05/12 07:13 AM that's fair enough, but it does seem pretty strange to only happen in 3rd...Check it out with your tuner and let us know what the problem was! Link to comment https://www.fordxr6turbo.com/forum/topic/80385-boost-cut-or-something-advice/#findComment-1245740 Share on other sites More sharing options...
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