Normally I don't like responding to these type of threads because I really don't condone the "ripping it all out" approach to solving vacuum or boost leak issues. I'm a firm believer that if you take the time to fully understand the function of the various components that you will find it easier to correct the problem instead of ripping everything out only to find that you have created new issues (Stinky blow off odors, CEL's, etc). I don't know if you have seen this or not. Clicky click. It was my attempt to explain how all that "stuff" functions. Now on to your questions:
Quote Originally Posted by SHAKING STEVENS View Post
3 questions:
1) i am concerned about 'blowby' and my engines lack of ability to deal with it? Given i just have a 1" line going up the the vc and then to atmosphere (as another member on here recommended), can i just re instate the pcv check valve (better still replace with ecs improvement), the pcv rubber 't' and the line back to the inlet manifold? so i have no vacuum source helping the crankcase breath, but surely just reinstating the pcv check valve without the sjp will just pull crank vapours into the inlet manifold (except when under boost). i am confused.
If you want to provide positive block ventilation at a minimum you will need to do the following: Connect the crank case to the valve cover to equalize the upper and lower block pressures and vent the line with the block breather valve (PCV). This line should be connected to the intake manifold. Essentially return it to the OEM configuration. Next you will need to put back the PRV (pressure regulating valve) either on the back of the valve cover or on the TIP and connect it to the back of the valve cover. Again, essentially returning it to the OEM configuration. Either position will suffice. This will both protect the block from boost pressurization and provide positive block ventilation whenever the manifold is under vacuum.

Quote Originally Posted by SHAKING STEVENS View Post

2) Given im happy with the current braking abillity (with no sjp) should i be concerned with lasting reliability? the last thing i want is sudden catastrophic loss of the braking system.
You will not experience "catastrophic loss of braking" but under certain conditions you could definitely have a significantly reduced amount of brake booster aid at inopportune times. Your brakes will still work but will require a lot more pedal pressure to stop.

Quote Originally Posted by SHAKING STEVENS View Post
3) having no evap purge system will make me run lean. But is this significant and do i need to worry about it? will the maf not provide the compensation, surely gas tank contributions are minimal. I assume a decent remap would address this, but realistically that's not going to happen for a year or so, maybe two.


a solution, however complicated, is appreciated and will be implemented, i can put some of that stuff back in no problem.
Your ECM can easily handle the A/F adjustment from removing the evap system controls. What it can't do is to remove the emission of smelly hydrocarbon fumes that the open evap system will be emitting or the CEL from running an open tank vent.