Jump to content
SAU Community

Recommended Posts

Forgive me for the millionth post but I cant not find the exact answer to my question & I wanna get this right the first time.

My 34 GTT has a manual boost tee (IN - connected to intercooler pipe & OUT - to wastegate actuator). I have a profec B Spec 2 that I bought used so it has the lines off the solenoid already.

(1). From what I gather, am I on the right track in the pic below? [please ignore what I wrote about *figure3* - just found an old thread where GTSBoy explains the consequences of doing this]

photo2-EBC.jpg

(2). For the boost pressure line that comes directly off the back of the Profec unit, where do I connect this? GTSBoy said in a thread that using a tee between the FPR and manifold will increase the risk of screwing things up & therefore using the MAP sensor hose is an alternative. Just curious if I have the correct MAP Sensor pressure hose to tee into..

1911522_10201522087924612_1464874629_o.j

(3). The solenoid that I have isnt specifically labelled as "COM or 'NC/NO. It just has 1,2,3 stamped respectively. Also this EBC was used in an external gate GTR before so it took me a while to figure this out. Can someone confirm if I have the ports labelled properly..

photo4-EBC.jpg

I think thats all the questions I have. Once again, apologise if this thread is repetitive.

Thanks.

Link to comment
https://www.sau.com.au/forums/topic/439460-profec-b-install-r34-gtt/
Share on other sites

If no one has answered this before the weekend is over then I'll post pics when I get back home to my car on Sunday.

It will be one line running to the intercooler nipple and one running to the actuator. The booklet should tell you what part on the boost controller to plug these both into.

Then just run a T piece into that line running off the back of the manifold and put your vac into that and into the profec

Just checked the instructions.

NO port goes to the boost source aka the nipple on your cooler pipe.

COM port goes to your actuator on the turbo.

The other NC port left should be blocked off.

Check this article

Your setup should be like page 5

And instructions on the ports is on page 9

Use the page numbers down the bottom left

http://www.greddy.com/upload/file/PRofec_Bspec2.pdf

Thanks a lot mate. So its a simple remove and replace (but being very careful which way to place the solenoid.

The vac hose coming from the back of the manifold - are you referring to the MAP sensor one?

Hopefully you can throw some pics on sunday. Thanks again.

There is a nipple on the left hand side of the intake manifold, it already has a hose on it running to a small black box in the top left hand side of the engine bay (if you are standing at the front of the car looking into the engine bay).

Tee it off that line and boost away.

Edited by owen1r

Just checked the instructions.

NO port goes to the boost source aka the nipple on your cooler pipe.

COM port goes to your actuator on the turbo.

The other NC port left should be blocked off.

Check this article

Your setup should be like page 5

And instructions on the ports is on page 9

Use the page numbers down the bottom left

http://www.greddy.com/upload/file/PRofec_Bspec2.pdf

Are you sure? This is the 3rd port on the solenoid we are talking about, right? All the other diagrams/pics I've seen have left this 3rd port vented to atmo.

Thanks Owen and Daniel for all your help. Cheers.

I can't be 100% if it has to be blocked or not sorry mate. I'm working off my mental pictures haha and they aren't very clear.

I'll let you know Sunday night if no one chimes in and gives the answer.

No problemo mate. Thanks a lot :)

Managed to install the Profec B with the (3rd port vented to atmo)

Now have the issue of massive boost spikes at the high end of rev range. Might get it looked at by a tuner..

Thanks guys once again.

Have a look in the troubleshooting guide which is in the document posted previously, try lowering your start boost.

Put it all the way down to near 0 if you can, if that doesn't make a difference, lower the gain until it no longer exceeds your wanted boost.

Edited by owen1r

Start Boost = 40
Set = 0
Gain = 5% (wouldnt go any lower)

Warning = (9psi)
Limiter = 20%

Used these settings to start tuning and boost spiked to 15psi. Turned the Set up to 10% and it still spiked. Not sure what on earth is going on but I think I might have to get this looked at by a pro. Its a shame really..

Raj send me a PM with your number and i'll send photos of my setup tonight.

Then I'll let you know what my start boost etc is.

It's going to be different for every car

But at least you will get an understanding as to what 20psi settings look like.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • The average previous owner for these cars were basically S-chassis owners in the US. Teenagers or teenager-adjacent. I often tell people that neglect is easier to fix than something that was actively "repaired" by previous owners.
    • Update 3: Hi all It's been a while. Quite a lot of things happened in the meantime, among other things the car is (almost) back together and ready to be started again. Things that I fixed or changed: Full turbo removal, fitting back the OEM turbo oil hardlines. Had to do quite a bit of research and parts shopping to get every last piece that I need and make it work with the GT2860 turbos, but it does work and is not hard to do. Proves that the previous owner(s) just did not want to. While I was there I set the preload for the wastegates to 0,9bar to hopefully make it easier for the tuner to hit the 370hp I need for the legal inspections that will follow later on. Boost can always go up if necessary. Fitted a AN10 line from the catch can to the intake hose to make the catchcan and hopefully the cam covers a slight vacuum to have less restrictive oil returns from the head and not have mud build up as harshly in the lines and catch can. Removed the entire front interior just shy of the dashboard itself to clean up some of the absolutely horrendous wiring, (hopefully) fix the bumpy tacho and put in LED bulbs while I was there. Also put in bulbs where there was none before, like the airbag one. I also used that chance to remove the LED rpm gauge on the steering column, which was also wired in absolute horror show fashion. Moved the 4in1 Prosport gauge from sitting in front of the OEM oil pressure gauge to the center console vents, I used a 3D printed vent piece to hold that gauge there. The HKB steering wheel boss was likely on incorrectly as I sometimes noticed the indicator reset being uneven for left vs. right. In the meantime also installed an airbag delete resistor, as one should. Installed Cube Speed premium short shifter. Feels pretty nice, hope it'll work great too when I actually get to drive. Also put on a fancy Dragon Ball shift knob, cause why not. My buddy was kind enough to weld the rust hole in the back, it was basically rusted through in the lowermost corner of the passenger side trunk area where the wheel arch, trunk panel and rear quarter all meet. Obviously there is still a lot of crustiness in various areas but as long as it's not rusted out I'll just treat and isolate the corrosion and pretend it's not there. Also had to put down a new ground wire for the rear subframe as the original one was BARELY there. Probably a bit controversial depending on who you ask about this... but I ended up just covering the crack in the side of the engine block, the one above the oil feed, with JB Weld. I used a generous amount and roughed up the whole area with a Dremel before, so I hope this will hold the coolant where it should be for the foreseeable future. Did a cam cover gasket job as the half moons were a bit leaky, and there too one could see the people who worked on this car before me were absolute tools. The same half moons were probably used like 3 times without even cleaning the old RTV off. Dremeled out the inside of the flange where the turbine housing mates onto the exhaust manifolds so the diameter matches, as the OEM exhaust manifolds are even narrower than the turbine housings as we all know. Even if this doesn't do much, I had them out anyways, so can't harm. Ideally one would port-match both the turbo and the manifold to the gasket size but I really didn't feel up to disassembling the turbine housings. Wrapped turbo outlet dumps in heat wrap band. Will do the frontpipe again as well as now the oil leak which promted me to tear apart half the engine in the first place is hopefully fixed. Fitted an ATI super damper to get rid of the worn old harmonic balancer. Surely one of the easiest and most worth to do mods. But torquing that ARP bolt to spec was a bitch without being able to lock the flywheel. Did some minor adjustments in the ECU tables to change some things I didn't like, like the launch control that was ALWAYS active. Treated rusty spots and surface corrosion on places I could get to and on many spots under the car, not pretty or ideal but good enough for now. Removed the N1 rear spats and the carbon surrounding for the tailpipe to put them back on with new adhesive as the old one was lifting in many spots, not pretty. Took out the passenger rear lamp housing... what do you know. Amateur work screwed me again here as they were glued in hard and removing it took a lot of force, so I broke one of the housing bolts off. And when removing the adhesive from the chassis the paint came right off too. Thankfully all the damaged area won't be visible later, but whoever did the very limited bodywork on this car needs to have their limbs chopped off piece by piece.   Quite a list if I do say so myself, but a lot of time was spent just discovering new shit that is wrong with the car and finding a solution or parts to fix it. My last problem that I now have the headache of dealing with is that the exhaust studs on the turbo outlets are M10x1.25 threaded, but the previous owner already put on regular M10 nuts so the threads are... weird. I only found this out the hard way. So now I will just try if I can in any way fit the front pipe regardless, if not I'll have to redo the studs with the turbos installed. Lesson learned for the future: Redo ALL studs you put your hands on, especially if they are old and the previous owners were inept maniacs. Thanks for reading if you did, will update when the engine runs again. Hope nothing breaks or leaks and I can do a test drive.
    • No those pads are DBA too  but they have colors too. I look at the and imo the green "street" are the best.
    • I’m not sure what happened I told them about sonic tunes free OTS tune and the next the I know .. I was booted..   To funny 
×
×
  • Create New...