scooby_doo_do Posted June 5, 2004 Share Posted June 5, 2004 Just been for a blast in the car and the boost is still funny.... On the second turbo the car hits 1bar but then drops to 0.7ish shortly after... Any ideas what this is ? Basically the car used to only hit 0.7 bar so i fitted a manual boost controller to up the boost... Been like this since then. Anyone near Brentwood want to have a look before i go to le mans on tuesday night ? Thanks. Craig, P.s. Just done my first ever oil change....... Well chuffed ! Quote Link to comment Share on other sites More sharing options...
geoffvalenti Posted June 5, 2004 Share Posted June 5, 2004 Originally posted by scooby_doo_do i fitted a manual boost controller to up the boost... P.s. Just done my first ever oil change....... Well chuffed ! I'm a little (OK a lot ) gobsmacked. You've never even changed the oil on a car before and you're fitting, and fiddling around with, boost controllers. Have you still got the cats in? (sounds like it) What sort of boost controller is it, bleed valve? Grainger valve? My first impression is that it sounds like a weak actuator on the wastegate but without seeing the car its very difficult to tell. Quote Link to comment Share on other sites More sharing options...
scooby_doo_do Posted June 5, 2004 Author Share Posted June 5, 2004 lol..... All the cats have gone from the car and i've got stage 3 hybrids and a hks front mount.. The boost controlelr, was a shite thing i bought from ebay.. Its got a spring and a ball bearing in it i think. Just never done an oil change on a car as its just as cheap to get the garage to do it ! - And don't run the risk of getting squashed under the wheels ! Quote Link to comment Share on other sites More sharing options...
Wez Posted June 6, 2004 Share Posted June 6, 2004 If its spiking and then coming back down I would say that its the manual boost controller/bleed valve, depending on the type some have a ball and spring setup with an adjustment screw which enables you to adjust the tension on the spring, they work ok but can cause this sort of spiking. Quote Link to comment Share on other sites More sharing options...
scooby_doo_do Posted June 6, 2004 Author Share Posted June 6, 2004 You think if i just change it for a bleed valve then it will be ok ? Need to find one before tuesday ! Quote Link to comment Share on other sites More sharing options...
SteveL Posted June 6, 2004 Share Posted June 6, 2004 If it's a brass screw type - looks like a T, and paid about £25-30 - I've tried one and found it not good for mine. It actually made less boost ! Geoff's wastegate diag sounds the right direction ( not a real techy myself - but I've seen similar discussions on the US boards ) Quote Link to comment Share on other sites More sharing options...
scooby_doo_do Posted June 6, 2004 Author Share Posted June 6, 2004 I've got one very similar to this ? Whats are your thoughts to what i should do chaps ? http://www.store.mr2oc.co.uk/product_info.php?products_id=63 I need something before tuesday night...... Doh.. Craig. Quote Link to comment Share on other sites More sharing options...
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