Mas Posted March 18, 2007 Share Posted March 18, 2007 Got the AVCR fitted yesterday aswell as the fmic, the car feels lovely and very responsive and fast but just noticed the over boosting which is very high for a bpu!! it goes to 1.7 bar even when you turn the boost controller off nothing happenes and still get the boost gage going up to 1.7 need to mention the boost controller doesnt read same as the boost gauge I have, ie; when the gauge shows 1.0 bar the avcr shows under boost -0.78...ish !!! any ideas guys? Quote Link to comment Share on other sites More sharing options...
_Rob_ Posted March 18, 2007 Share Posted March 18, 2007 Do you have a restrictor ring in? Quote Link to comment Share on other sites More sharing options...
AlanM Posted March 18, 2007 Share Posted March 18, 2007 Youcan go single when you have your engine rebuilt Mas Quote Link to comment Share on other sites More sharing options...
Homer Posted March 18, 2007 Share Posted March 18, 2007 If its happening with it off its not installed correctly. I take it you had a double decat and restrictor ring in it before? Quote Link to comment Share on other sites More sharing options...
Mas Posted March 18, 2007 Author Share Posted March 18, 2007 Its double decated with a restrictor ring (I think its a 1 bar one) , very strange as we just checked it with Ro and the car is just amazing as never been like this before so quick but again it might be due to the over boosting, no different with controller on or off I still go to 1.7 !!! Quote Link to comment Share on other sites More sharing options...
Jonboy Posted March 18, 2007 Share Posted March 18, 2007 not surprised it feels quick running at 1.7! Quote Link to comment Share on other sites More sharing options...
JamieP Posted March 18, 2007 Share Posted March 18, 2007 Mas dont let it boost to 1.7bar, get it to someone that can sort it sharpish;) Quote Link to comment Share on other sites More sharing options...
Guru Posted March 18, 2007 Share Posted March 18, 2007 Who can say bang the quickest? Quote Link to comment Share on other sites More sharing options...
Jonboy Posted March 18, 2007 Share Posted March 18, 2007 Quote Link to comment Share on other sites More sharing options...
Homer Posted March 18, 2007 Share Posted March 18, 2007 Mas, as other said do not drive it on boost. Back when I was messing about with restrictors, I saw 15.0 AFR at 1.7bar - not good at all! It'll kill your plugs in seconds too. It does feel incredibly quick though! If its reaching those levels it's almost as though the wastegate isn't operating at all. Check where it's been plumbed in and verify its correct. Quote Link to comment Share on other sites More sharing options...
Wez Posted March 18, 2007 Share Posted March 18, 2007 The boost controller is plumbed into the wastegate and the controller is not having any affect I would look in this area first. Do not drive it at 1.7bar. Quote Link to comment Share on other sites More sharing options...
Mas Posted March 18, 2007 Author Share Posted March 18, 2007 Cheers guys, I only drove the car about 100ish miles since last night , not going to use it till its sorted again, Ro thinks I should have disabled the hose that ends up some where in the wastegate, he will send me a pic later on and I will show it to you guys, as I said dont really want to kill the turbos this quick I'll find a pic of my engine bay and let you know which one he means. Quote Link to comment Share on other sites More sharing options...
Mas Posted March 18, 2007 Author Share Posted March 18, 2007 not my engine bay but thats the hose Ro thinks I should have blocked. Quote Link to comment Share on other sites More sharing options...
Whitesupraboy2 Posted March 18, 2007 Share Posted March 18, 2007 not that im technical but mine is blocked off Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted March 18, 2007 Share Posted March 18, 2007 The hose that should be blocked off is the one that goes from the actuator to the waste gate VSV, the other from the waste gate to the turbo compressor housing is the one that should be plumbed into the boost controller. Quote Link to comment Share on other sites More sharing options...
Mas Posted March 18, 2007 Author Share Posted March 18, 2007 The hose that should be blocked off is the one that goes from the actuator to the waste gate VSV, the other from the waste gate to the turbo compressor housing is the one that should be plumbed into the boost controller. guys, could any one post up a pic of the blocked up hoses etc if you have one available somewhere Quote Link to comment Share on other sites More sharing options...
Supra-Dupra Posted March 18, 2007 Share Posted March 18, 2007 I had the exact same thing (1.5ish) with my profec-b on my old sup, turned out the valve control motor, I just got my hands on another motor and it worked fine. Quote Link to comment Share on other sites More sharing options...
supRo Posted March 19, 2007 Share Posted March 19, 2007 Hi Mas, It's the front one that needs blocking off as in the thumbnail picture marked with "X" and labelled below: It's the one marked "From Wastegate VSV": http://www.mkivsupra.net/vbb/attachment.php?attachmentid=13934&d=1112558703 Mines just blocked with a short bit of tubing with a bolt stuck on the end! The Wastegate VSV electric plug can be disconnected (I think!). I'll double check everything with you when I get my car back, should be early this week. Ro Quote Link to comment Share on other sites More sharing options...
dandan Posted March 19, 2007 Share Posted March 19, 2007 I saw 15.0 AFR at 1.7bar - not good at all! It'll kill your plugs in seconds too. I'd consider myself extremely lucky if I got away with only knackered plugs from 15:1 under that much load. Quote Link to comment Share on other sites More sharing options...
mikeyb10supra Posted March 19, 2007 Share Posted March 19, 2007 Could be a faulty boost gauge, do you have an EGT gauge?? what sort of heat is this showing?? Quote Link to comment Share on other sites More sharing options...
Mas Posted March 19, 2007 Author Share Posted March 19, 2007 Thanks Ro, atleast I know something needs doing and hopefully thats all needed, I leave the boost controller off though for time being to see whats happening first. Quote Link to comment Share on other sites More sharing options...
Mas Posted March 19, 2007 Author Share Posted March 19, 2007 Could be a faulty boost gauge, do you have an EGT gauge?? what sort of heat is this showing?? yes I have EGT and it shows ok, never more than 6-7 !! we set the peack to 8 I think . Quote Link to comment Share on other sites More sharing options...
mikeyb10supra Posted March 19, 2007 Share Posted March 19, 2007 yes I have EGT and it shows ok, never more than 6-7 !! we set the peack to 8 I think . And they stay at 7-8 even at 1.7bar?? It could be your boost gauge thats faulty then, have you checked your fittings on the gauge Quote Link to comment Share on other sites More sharing options...
Branners Posted March 19, 2007 Share Posted March 19, 2007 yes I have EGT and it shows ok, never more than 6-7 !! we set the peack to 8 I think . is the EGT fitted pre or post turbo? Thats some low figures even for 1.4bar, let alone 1.7bar. JB Quote Link to comment Share on other sites More sharing options...
Mas Posted March 19, 2007 Author Share Posted March 19, 2007 And they stay at 7-8 even at 1.7bar?? It could be your boost gauge thats faulty then, have you checked your fittings on the gauge the thing is boost gause shows right but its the boostcontroller that shows stupid figures, ie; when Im well passed 1 bar the avcr shows -0. 78ish is the EGT fitted pre or post turbo? Thats some low figures even for 1.4bar, let alone 1.7bar. JB I got Mark at phoenix to fit that one and I think it was fitted pre turbos, not sure though but I remember we had this conversation with mark before he fitted them. Quote Link to comment Share on other sites More sharing options...
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