No rev's

[HRCEngineering]

I wrapped up my 50 trim with external wg off of the 02 housing install. i have not hooked up my ebc yet. i am running off the 14.7 spring pressure. problem is, in neutral, or driving, the car cuts out at 5k rpms. it will not rev past this point. prior to the install, about three months ago, i had the tb off to install new gaskets. i have not yet blocked off the boost nipple of the compressor housing yet. also, both nipples on the wg are open. nothing was bad with my ignition system prior to the install. the car has been sitting for about three months now. any input would really be appreciated at this point. thanks.

 

[topstreet]

Ray, Why are you running this setup with out the waste gate hooked up and with vacuum leaks. DONT DO THAT!

Make sure you dont have any loose or popped off intercooler pipes. Hook up the waste gate. You are running more like 35psi right now.... Not spring pressue. The waste gate needs boost referance in order to operate.

Fix these couple of things and see if it still does it.

 

[HRCEngineering]

Thanks for your feedback. Every point you made is a good one. My boost is lucky to build 2psi, but thats not of concern as i expect that in its current state. I am hooking up the the lines to the wg tomarrow morning. How is that creating a vacuum leak, btw? It's on the turbine side. Thanks for the input.

Ray

 

[topstreet]

You are not causing a vac leak by not having just the waste gate disconnected. It is just not a good idea unless you like max boost with out having tuned or tried out a new setup.

I would be more suspect of a major boost leak such as a pipe off. What type of AFM or other are you using one this setup. If it is before the turbo and the major leak is there.... Then the AFM could be thinking it is at max injector duty and enabling fuel cut.

Its going to be something silly like this unless its a AFM plug or crappy bov something like that.

??? Was the car reving normally BEFORE the turbo install??? When exactly did this start. After you did the gaskets on the car, or before? Is it just now, related to the turbo install and you were just mentioning that so others would have some backround?

 

[HRCEngineering]

You are not causing a vac leak by not having just the waste gate disconnected. It is just not a good idea unless you like max boost with out having tuned or tried out a new setup.

I would be more suspect of a major boost leak such as a pipe off. What type of AFM or other are you using one this setup. If it is before the turbo and the major leak is there.... Then the AFM could be thinking it is at max injector duty and enabling fuel cut.

Its going to be something silly like this unless its a AFM plug or crappy bov something like that.

??? Was the car reving normally BEFORE the turbo install??? When exactly did this start. After you did the gaskets on the car, or before? Is it just now, related to the turbo install and you were just mentioning that so others would have some backround?

Thanks for the reply. Yes I only mentioned gaskets as a little background info. The whole issue started with the turbo swap. The only boost leak is the fitting off of the compressor housing. I KNOW this is causing a boost leak, and I am losing metered air. This is what most likely is causing my issue. That I will be taking care of when I locate a suitable plug or nipple. My number one question I have for you is how the EBC is connected to the WG now. The valve in the engine compartment has two lines coming from the only two fittings. The first one is T'd into the BOV vac source directly of manifold vacuum. The second one use to go to my internal WG actuator. Question is if this second line, now not in commision, goes to the side fitting on the Tial.
Quite frankly I am getting just a little pissed.

Thanks
Ray

 

[topstreet]

You stumbled across the right guy. I used to distribute Tial Sport products for over 3 years and have used them longer.

This is how they want you to do it. ( disregard the "vent", most boost solenoids have them )

I will tell you that all you have to do is to hook the side port of the WG with a single line from the manifold (to run spring pressure) or from the boost controller like it was an internal gate with only one fitting.

If you do it this way, just make sure the top port on the Gate is left OPEN!!! dont plug it.

Hope this helps!

 

[HRCEngineering]

I have seen that diagram about 100 times now! It keeps showing how they want me to take ported vacuum, not manifold vacuum. That makes no sense. I am a tech myself and will take my time to make this car perfect. So I tend to take that diagram with a grain of salt, but thanks for posting it. The car is running a Profec A, with two lines off the boost controller like I said. Left over from the old setup as it sits, the one line is teed into the vacuum source to the manifold, and the other is left over from where it use to be on the actuator. The one from the actuator should go on the side port, correct? Or must it be teed off of manifold vacuum? Thanks.

Ray

 

[topstreet]

Ok then check this one out.

I use this setup with a TurboSmart manual boost controller and a Tial 44mm wastegate (1.6bar spring). I am very accurately controlling 43 psi right now.

 

[HRCEngineering]

Ha..thanks. Not trying to make it difficult, I am very meticulous in my work. That image makes sense. Whatever the case, should I see manifold vacuum at the line to the WG? Thanks for the input you've given.

Ray

 

[suicidal2af]

Thanks for your feedback. Every point you made is a good one. My boost is lucky to build 2psi, but thats not of concern as i expect that in its current state.

That is of concern, actually. You've got a major boost leak -- 100% guaranteed.

 

[HRCEngineering]

update. SBR's compressor wheel is already starting to etch a mark in the side of my compressor housing! this is excellent. not. the car still has not rev'd past five grand but once this afternoon after hours of tinkering. watching dsm link, when it cut out at 5k the injdtc's would bounce from ~27% to 0%. at that moment afr would rocket down to 18:1, and back up to 11.4:1. car makes a "ddddddddiizzzzzzzzzzzzzzzzzzzzzzzzzz" sound when 'getting on it'. just an update. i may tear the whole thing down again very soon.

 

[HRCEngineering]

FIX: Some jackass set my rpm at 5,000 via Link. I was furrious when I figured that out!