Question 1 I am swapping my std vlt inlet manifold to a power ported NA manifold ! Now do i need to use the air regulator that comes with my std vlt manifold or do i need to use a NA one ? The NA maifold that i am using was setup for LPG with AFTERMARKET EMS .. XF TB without the coolant lines ! However i am using std computer with petrol and no pullution gear ! Question 2 I assume u need to run the fuel pressure regulator control solenoid valve from the facotry vlt item ? however running no pullution will i encounter any issues should i use the NA one ? I hope that helps and is clear as im in the process of doing it now thank you

Q1. I haven't compared the N/A to turbo regulator, but i'd be confident they are the same. It's just a heat activated valve. Q2. You could get away with no solenoid valve. It's just to raise fuel pressure while starting when the engines hot. The solenoid on my old motor had been dead for years, and i never had any trouble starting it. If you decide to keep the VLT solenoid, you would need to use the surge tank and check valve with it.

Quote: Originally Posted by MonstaS4 Q1. I haven't compared the N/A to turbo regulator, but i'd be confident they are the same. It's just a heat activated valve. Q2. You could get away with no solenoid valve. It's just to raise fuel pressure while starting when the engines hot. The solenoid on my old motor had been dead for years, and i never had any trouble starting it. If you decide to keep the VLT solenoid, you would need to use the surge tank and check valve with it. thats the answer i was after legend mate really appreciated the surge tank is that black cylinder with nissan logo on one side and 2 entrys or exit feeds on the other ? Some original photos have not been recovered yet.

Quote: Originally Posted by PISTVL thats the answer i was after legend mate really appreciated the surge tank is that black cylinder with nissan logo on one side and 2 entrys or exit feeds on the other ? I think you might be looking at the charcoal canister Some original photos have not been recovered yet.

Quote: Originally Posted by VLHERO I think you might be looking at the charcoal canister No he is reffering to the vacuum surge tank on a turbo manifold. Something an NA doesnt have!

Quote: Originally Posted by YEP_boost No he is reffering to the vacuum surge tank on a turbo manifold. Something an NA doesnt have! correct ! i have also blcoked of the hose that comes off the top of my air regulator the one that runs to the plenum chamber will this cause me any issues ??

Possibly as this is the cold start system and air idle circuit for air con. Go to a wreckers and pinch a hose!

Quote: Originally Posted by YEP_boost Possibly as this is the cold start system and air idle circuit for air con. Go to a wreckers and pinch a hose! i have the hose bud but i dont noe where to attach it to on the plenum ! i have had coolant lines blocked due to the fact that the XF TB does not need em so there is not coolant going though the manifold ! whats name of location where i should s I attach the hose to on the plenum?? andy

Ahh your talking water lines not air system.You can block them off but!!!! You loose the highest bleed point in the engine for coolant and you may get air trapped within the system. You may be able to bypass the throttle body by using a longer hose. If all you have changed on the std man is the TB then this shouldn't be a problem!

Quote: Originally Posted by YEP_boost Ahh your talking water lines not air system.You can block them off but!!!! You loose the highest bleed point in the engine for coolant and you may get air trapped within the system. You may be able to bypass the throttle body by using a longer hose. If all you have changed on the std man is the TB then this shouldn't be a problem! spot on mate thats exactly the situation ! i have blocked off the coolant points and am running a longer hose instead that by passess inlet manifold ! i understand im losing the highest bleeding point ! however i dont noe what to do with hose from top of air regulator ! will the air still circulate as it should with these lines blocked off ?? just to confirm im using NA inlet manifold XF TB std vlt computer !

Quote: Originally Posted by PISTVL however i dont noe what to do with hose from top of air regulator ! will the air still circulate as it should with these lines blocked off ?? just to confirm im using NA inlet manifold XF TB std vlt computer ! Connect the line as the air regulator relies on this air passing through it to operate the cold start correctly Some original photos have not been recovered yet.

no probs dude thanks from all ya help really appreciated ill have a look at the gregories to see where the hose from the top the air reg leads to the plenum andrew Some original photos have not been recovered yet.

ok guys im nearly completed this ! I have one issue ! The area of concern is the hose that goes from top of air reg to the inlet manifold (just under the coolant points ) This plug that the hose normally connects to on the plenum has been welded up ! Can i redirect this hose to another area of the manifold ? Or can i get away with connecting/joining it to the hose that goes from firewall side of the inlet manifold to the cooler pipe?? cheers

It can go anywhere on the inlet manifold/plenum. The air reg bypasses air around the throttle butterfly, so connecting it to the inlet manifold/plenum should achieve this.

cheers mate

connect it to the small hole on the passenger side where the rocker cover emission hose goes. Do you have a manual or auto, you may run into trouble with the whole XF t/body thing, check the last few pages of JD plenum page in Advertisers section.

Quote: Originally Posted by RB30X connect it to the small hole on the passenger side where the rocker cover emission hose goes. Do you have a manual or auto, you may run into trouble with the whole XF t/body thing, check the last few pages of JD plenum page in Advertisers section. ur an absolute legend that the best place for it ill look into the xf thing im auto ok bud from what im aware of the auto vl tps should work fine ! u just need to file the xf butterfly shaft to adapt to vl tps correctly make a new bracket for the sensor to screw on the TB ( alloy welding skills needed ) and set it to 0 ! ill have this done with the next day or 2 and ill post pics and results ! Some original photos have not been recovered yet.