420a built vaccum ideas

[DSM420REVAMP]

Hi I've just recently finished rebuilding my 420a along with alot of massive mods to the engine, however I've been haveing some minor issues with the engine idle and was thinking it may be vaccume related(not sure).
Basicaly I was wondering if someone with a similar build could send some closeups of their vaccum routing.

Basics for build
Forged internals
Stage 2 turbo regrind cams(Crower)
SS valves
SS obx intake manifold
MPX 60mm TB
generic wastegate
grredy type rs blow off
(vortech fmu or adjustable fpr or both)
egr block off.

If any questions send them my way. If anyone can help me out it would be very helpful. Thanks

 

[glowryder]

Most routings are going to be different.. Whats your In Hg at at idle? Should be ~16 with those cams.
Have you tired a Boost leak tester? That will tell you where a big lek is, or a smoke machine, but I realize those are expensive..

Compressor Housing should have a Vac line going to the WG.
BoV, FPR/sfmu (w.e u have for fuel control), TB all to a vac Log or the Intake Manifold.
The IM will also have a Vac connection to the Brake booster.
Theres also the CV stuff.

There will also be Cruise control and EGR lines too.. IMO, get a Vac Manifold. build a boost leak tester, and pressurize the system, and listen for leaks. If its a MOdern Performance TB, the bearings often leak air, it may be enuff to cause your Issues. Since your cammed , youll have less vac, however, those cams are not that aggressive, so again, Vac should be ~16. GL.

 

[LeeSD1]

Whats the Vac 'InHg' reading at idle?

 

[DSM420REVAMP]

At Idle it sits at about 10InHg. However when I give it gas it just drops to 0. Now this has a turbo conversion however the turbo is currently not piped to the intakeman. Any Ideas?

 

[eclipse420ags]

You got leaks, buy a boost leak tester.

 

[glowryder]

^AGREED. Follow our advice.. you have a leak. However those cams are not helping your vac, but your lower then where you should be.