Thread: How To: Adjust TD5 Boost Pressure.

ok,the rave manual says the waste gate is electronically control,so how can u mechanical adjust the boost pressure.

if you own a defender its not elec controled, if you own a d2, this is what you do,,

in that pic of the engine bay you see a pipe comming off the wastegate, folow that and it will bring you to your boost modulator, what you need to do it join the waste gate and the charged air pipes,

use the little joiner from the top hose that gose to the inlet air pipe and block that off,

now that the bottem hose and the side hoses are joind you have a full macanical waste gate,

the hose that comes out the top, remove that and you have some spear gardning hose

now the discos turbos are wound right down, so it will take a fare few terns,

if your worryed about terning the boost up, dont be, the td5 has a smart( its to smart sometimes) ecu and will cut fuel b4 the engine will make to much boost. if you own a nano and it only reads in kpa, the NO. you want its about 242kpa, they over boost at 245,

Is this worth doing? I have a stock 130 def. Sort of wondering if I should give it a go.

it is, its not going to make your car throw you into your seat, but its the little things that made the diffrence, when towing, it will pull that little bit better, you wont have to rev it as hard up the hills, use a higher gear, and you get to hear it boost heaps more

it is noted that to get the best out of this is with a good 100% working MAF,

Turned my car from sluggish to bearable i'll tell you that much! can definitely notice it though

Shamo

Originally Posted by stig0000

if you own a defender its not elec controled, if you own a d2, this is what you do,,

in that pic of the engine bay you see a pipe comming off the wastegate, folow that and it will bring you to your boost modulator, what you need to do it join the waste gate and the charged air pipes,

use the little joiner from the top hose that gose to the inlet air pipe and block that off,

now that the bottem hose and the side hoses are joind you have a full macanical waste gate,

the hose that comes out the top, remove that and you have some spear gardning hose

now the discos turbos are wound right down, so it will take a fare few terns,

if your worryed about terning the boost up, dont be, the td5 has a smart( its to smart sometimes) ecu and will cut fuel b4 the engine will make to much boost. if you own a nano and it only reads in kpa, the NO. you want its about 242kpa, they over boost at 245,

According to rave, the defender ECU still monitors boost and opens the waste gate when full boost is reached, dont see how it can do that without a modulator in the system.........

The ECM controls the amount of boost pressure the engine receives by way of the turbocharger. When full boost
is reached a control signal is sent to the wastegate modulator, and a vacuum is applied to the wastegate valve.
The wastegate valve opens, bypassing some of the exhaust gases away from the turbine to be output to the
exhaust system.

hi guys,

is there a way to do this to the Tdi's?

thanks

-eddie

Yes. The tdi is the same deal. But the wast gate for the 300 is a buger to grt to. The 200 tdi is very easy to get to. But on a tdi you need a boost gadge.

As for the post on td5 ecu. Yes both do montor the boost. But only the d2 actuly controls the boost.