I tried a manual greddy type and it was uncontrolable or would fluctuate every run. I tried my profec B which is great and never gave me any problems but now wont go passed 29psi turned all the way up. I think I remembered hearing the profec B was only good for around 30 anyway.

Just trying to get an idea of what you guys are using although I know most do not run over 30 psi please only comment if you actually ran 30+ on a particular controller and not just hearsay.

 

I use the controller in my Haltech. It works great for 30 PSI but i have not gone past that YET

What gate and spring are you running?

I think most of the "BIG DOGS" are running an E-Boost2.

 

I thought someone mentioned using a air compressor valve?

 

Dam allen your quick. Im using two tail gates with 17.5psi springs. I have tried a haltech one when I had E6k and i didnt like it but that was years ago when that solenoid just came out. My brother wants to try the Autronic one which ill probably try next.

 

How you plumb the solinoid has a lot to do with it on a ebc. I am running a 4 port sol. which does not pressurize the lower chamber until it's time to open it. That way you have boost pressure holding the valve shut and no pressure trying to open it on the bottom of the gate. I too am running 17.5 PSI springs with no trouble at all.

 

...

 

an Autronic or mac valve will do it...

 

I am using a Turbo XS Dual mechanical boost controller with an 18 pound wastegate spring. On the dyno it held 31 psi steady no problems.

 

Here is a little reading for your spare time.

https://www.rx7club.com/showthread.p...ghlight=4+port

 

Turbosmart E-Boost @ all the way...expensive but its like you put Velcro on the boost needed and it just stops where you want it to.

Chris

 

C02 bottle??

Oh 30, I thought you said 300

 

Anthony, I using this and it controls the boost the best of all the controlers I've used thus far. It lets you ramp the boost, control boost by gear too.

 

Apexi avcr (blue screen) I had mine up to 42psi on a oops !! lol

 

Dam Ernie I dont have your budget, that sh$T is a 1,000 bucks.

 

Just take the lower line off and use the manual controller to hold the gate shut

 

The wastegate spring pressure has a lot to do with it. If you're exceeding double the spring pressure it becomes harder to control. The profec B just works of duty cycle of the solenoid valve so it should be able to go as high as the setup allows. Maybe see what the evo guys run, don't a lot of them run 30 + psi?

 

Change your spring to a bigger one.

My car with a 7psi spring with a eboost can be wound to 28psi.

With a 15psi spring i can now take it comfortably to 38psi.

 

You could run CO2 straight to the one side of the wastegate regulate the regulator to whatever PSI you want and the other side of the wastegate to the compressor housing the wastegate will not bleed off until the turbo has produce enough pressure to push the valve open . the CO2 will keep it close and the boost pressure will open it or you could go with one of this http://www.paradiseracing.com/Store/...emart&Itemid=1 which works with CO2 also and you can set boost by shift .

 

Anthony, if you change your spring it WILL help alot. I have a 20lb spring in mine.

 

YEP !!!!!! 22lb spring here this is where my ooops came from, forgot to lower my duty cycle after the switch hey , even I am not perfect lol

 

hmm maybe ill try stiffer springs I thought I would at least get 35psi w 17.5 springs. stiffer springs are going to rise my low boost setting now oh boy.

 

The Profec B's can only control up to double the wastegate spring pressure. Either bring the spring pressure up, buy a more expensive boost controller, or get some c02 on it... IMO I would just figure what spring/springs you have in your wastegate at the moment and try to target around 20 psi for the bottom line.

 

If you use that logic then I should have no problem getting 35psi since I have 17.5psi springs as stated earlier. Im only getting 29psi with the profec b. I dont think the springs are my problem since I got 32psi with a manual controller. Something in the profec b is limiting to 29psi. I bet if I put 24lb springs I would still only get 29psi with the profec b. Has anyone ran more then 30psi with a profec b ?

I also remember reading on Tial's site that the max boost is 2.5 times the spring rate not double. which would mean that 17.5 springs should give me max 43psi.

Im going to try the autronic solenoid which is exactly like the one Allen posted and exactly the type of solenoid TBC world electronic uses but charges 10x more.

 

I was just posting my experience. Although I've yet to go past 26lbs. You and your brother are doing amazing things. I respect both of you pushing the "limit" that we all did not believe. I'm sure you have a good reference point for wastegate so I won't even bring that up...

 

Or run the AMS 500 and be able to use the softest spring possible and still control boost.

(credit to TweakGames for directing me towards this option, he has it set up and running)