Another conversion question as I didn't have an n75 with the conversion I'm not sure which pipe is which I know it's mounted in the tip but don't know which outlet on the n75 goes in there Which pipe goes to turbo actuator and which one goes to the inter cooler pipe ?
Longest outlet goes in the tip, one opposite goes to the actuator and the one facing the other way goes to the charge pipe.
Do not go just of the picture as some are reversed! Vertical tube is always turbo boost in but horizontal ones can be reversed. Most of the times the longer horizontal tube is vent back into tip but on some valves it is ment to go to the actuator Best way to make sure is to test it with your mouth When the valve is unconnected electrically blow into vertical tube and whichever horizontal tube is letting air out should be plumbed in to the wastegate actuator
If you look at pipe lengths they're not reversed Sam, only the orientation of the electrical plug is backwards, usually on J valves. It will always be LONG nipple to the TIP, opposite one to the actuator, and perpendicular one to the charge pipe.
Hi chaps as I'm running a k04 turbo and tip does it matter which hole I plumb the n75 valve into ?? I have a hole just behind the maf and another just before the turbo It would look neater in the one just before the turbo but I'm not really fussed if it has to go in the other one
This is exactly what i thought until i needed to change my valve so i plumbed in new one as above Next time i was out in the A3 and had a spirited drive car overboosted badly to the point of ecu cutting boost so violently i nearly went through the windscreen! Thats when i found that long horizontal one was in fact the one that required plumbing into actuator Think i still got the valve i will try and find it just out of interest to check part number
I did blow into the pipe that comes straight out the bottom so to speak and the air came out of the short pipe opposite the long pipe so I'm guessing the long pipe goes into the tip But I'm still wondering what hole to fit it on the tip as I have two to choose from I'm tempted to plumb it into the one closest the turbo the hole on the tip By the turbo is approx 3" away from the turbo itself
I don't think it will make much of a difference which hole you plumb it in as the amount of air that goes through the return port is not massive
I need to make sure mine is plumbed in correctly as I get boost fluctuations, or it could be a dodgy valve Can these be removed in favour of a manual controller? I'm running OEM ecu, can the or settings be changed to effectively tell the ecu it does not need it?
I was thinking the same regarding a manual boost controller. Some say they fitted one and had no problems at all, others say it'll stress the turbo ???... I'd love to know a definite answer.
Never came across a manual controller that actually works on a road car where drivability is important and to ensure no boost spikes are present I have seen them used successfuly on drag racers as they are only doing one thing and that is just to limit boost to desired value on WOT down the qtr But they just cant replicate N75 when controlled(mapped) corectlly Boost control valves also help build boost not just limit it
Thanks for the detailed reply Sambo I think I'll stay clear of the manual boost controllers. Looking forward to some Toyotecwerke
What a difference a quick swap over of the pipes does ! My car was underpowered and I had the n75 as the above diagram, I swapped the 2 horizontal pipes over and it made a huge difference Lots of boost and car running better, it now 'sounds' right when you drive it Oh and it bloody well goes right too !
I fear your N75 valve is now making your turbo overboost hence why it goes so well! If it is ment to be connected as it was and was underpowered it means it runs stock boost and you used to that power, now you swapped pipes over N75 is not limiting boost as it should
I did the blow check too and air came out of the short pipe This was originally connected to the actuator , now it's going to the TIP is this right ?
