Greddy Profec B spec II?

[AaronsSupraMKIII]

I have a Greddy Profec B spec II installed in my car. Anyone know about these? I'm ashamed to say I dont know how it works, or even what all it does. Been afraid to touch it. Is this a good thing to have? I know it has something to do with the Greddy BOV.

Also there is a hole in my accordian hose that has a peice of rubber trying to seal it up. Its sucking air almost at the turbo. I also have a small exaust leak at the donut gasket. Will either of these mess my turbo spooling up, and my gas mileage? Could it hurt anything? I need a new accordian hose and I guess donut gasket.

 

[NewWestSupras]

Call Jeff @ Champion Toyota for good prices on such things as accordian hoses. 1-713-943-7010.

 

[hellraiser456]

The greddy profec B is an electronic boost controller. its purpose is to soley raise boost. it has nothing to do with your BOV. i can find out later how to use on as my roommates mr2 has one. they are probably one of the best boost controllers you could have in its price range. It is a good thing to have if you want to raise the boost, but you should be taking a few precautions before you raise the boost.

first of..i am assuming you have a 7M-GTE(you can see this on the front of your engine)...what are your mods....has anything been done about the headgasket. &m like to kill head gaskets so you want to make sure you have done the necessary mods so it won't. its an expensive lesson learned if you don't as you don't sound like you can do a head gasket by yourself.

As for the accordian hose...get that replaced...that will cause unmettered air to get into the system and thus cause various problems.

exhaust leaks will only effect your turbo spool if they are before the turbo...you may run into problems if the leak is before the o2 sensor but it would have to be a pretty big leak....otherwise they are no big deal other than they will make more noise. i currently have an exhaust leak and im not too worried about it.

 

[Grimsta]

I got a Profec B for free, lol. Took it out of a customers car to install a manual boost controller (WTF) and he just wanted to throw it away, so i kept it.

 

[boosted17]

I have the spec II it is not bad but there is a bit more work to adjusting it from the older profec B's.

 

[MA70Snowman]

hey man.

first off the Profec B spec II. is in my opinion one of THE BEST boost controllers (that what it is) out there. bang for the buck hands down. now before I explain more about the unit let me ask

1. Is it already installed?
1a. If it isn't installed do you have all the pieces.
the pieces are.
a) The unit itself (it has the display on it)
b) The actuator (its a rectangular piece w/ 3 holes on it and wire)
c) Power connecter (this should be a simple 2 wire w/ a connector on the end and plugs into the back of the unit)


If its installed your set (providing its connected properly) if not I can help you out there also.

okay here's THE manual for the GPB2. Read it learn ur way around the menus and learn what each option controlls (i CAN NOT stress this enough learn what each one is)

http://greddy.com/img/PHP/products/pdf/682.pdf

after you've learned that then go here.
Now this website is an AWSOME write up of how to tune the profec B spec II for your car. read it through a couple times (don't just skim. and don't just read once) know what it is talking about.. if you don't learn what its talking about.. you can screw things up if you go wrong here.

http://forums.evolutionm.net/showthread.php?t=60826


hope all that helps man. feel free to PM me w/ anymore questions. I've spent alot of time w/ these units (have had one on 3 different cars) and have tuned it for a bunch of friends. These are great units b ut to many times people don't want to learn what all it can do for you.

 

[eman2289]

OMG! Thank you for that site with the write-up! I have been trying to figure mine out, but felt stupid asking about it since there is an instruction manual (which confuses the hell out of me)

Not to jack the thread, but for some reason the car will not do a burnout. On cold tires trying at 3 grand and then 4 grand, it will not spin the tires, they are cheap tires, so i figured they should have no trouble spinning. I was able to burn-out easily at 3 grand before my install, but now the car just dies. Any suggestions?

 

[AaronsSupraMKIII]

WOW thanks for all the info. The unit is installed, and functioning. I told the guy when I bought the car that it was my first turbo, and the first thing he did was lowered the settings on the unit so I wouldnt mess things up. He told me to learn more about the car, then I can adjust the controller, but until then he recommended that I dont even touch it. LOL I have taken his advice. I will study up on the links in the previous post. Thanks for all the info. Guess I am lucky to have it on the car.

Here is the mods that have been done so far.

Aftermarket HP Fuel pump(walbro?), profec B II boost controller, greddy BOV and 3" custom all metal downpipe, billet aluminum motor mounts, 18" racing rims and LP tires, 3" exhaust all the way back, Tripple pod with air flow, 30lb boost guage, and volt, and I bought a navigation system and TV.

 

[JASONA70]

this should be used with your piggy back, if you dont have a piggy back dont use it at all, it might seriously do really big damage to your car if you dont use it with a piggy back. ok now would be a great time for someone to pull up some SAFC write ups =)

 

[JASONA70]

ok found the apexi safcII manual if anyone is interested. http://www.apexi-usa.com/pdfInstallation/15.pdf

 

[JASONA70]

basically if you want to achieve higher boost, you will need the following.

Dyno (unless you can go at W O T and look at the afc at the same time)
Wideband (make sure you have this!!!)
afc controller
Boost controller

---------------------------------------------
if you get a HKS fcon you can buy chips that will have a set PSI. so just plug and play your fcon and then set your greddy at the correct boost value. (this would be the easier way to go)

correct me if im wrong

 

[AaronsSupraMKIII]

basically if you want to achieve higher boost, you will need the following.

Dyno (unless you can go at W O T and look at the afc at the same time)
Wideband (make sure you have this!!!)
afc controller
Boost controller

---------------------------------------------
if you get a HKS fcon you can buy chips that will have a set PSI. so just plug and play your fcon and then set your greddy at the correct boost value. (this would be the easier way to go)

correct me if im wrong

Hmmm I got a LOT to learn. I don't know what wideband and AFC even are. Are they expensive? I need a scanner also, are they pretty expensive? Thanks....

 

[JASONA70]

depending what kind of afc you get. standalone would be the best, but very pricey and probably not for your application. i suggest a piggy back.

AFC= airflow converter

the reason you need a airflow converter is because your boost controller is only hooked up to your wastegate and vac lines. it has no control over your air and fuel mixture. if you turn up the boost but with no extra fuel and no extra air going into the cylinders, thats a recipe of death.

 

[OneJoeZee]

depending what kind of afc you get. standalone would be the best, but very pricey and probably not for your application. i suggest a piggy back.

AFC= airflow converter

the reason you need a airflow converter is because your boost controller is only hooked up to your wastegate and vac lines. it has no control over your air and fuel mixture. if you turn up the boost but with no extra fuel and no extra air going into the cylinders, thats a recipe of death.

I don't think you really understand how the ECU works.

You do not need an AFC to safely raise boost pressure.

 

[MA70Snowman]

I don't think you really understand how the ECU works.

You do not need an AFC to safely raise boost pressure.

doh you beat me to it.. yeah the PFB2 does not need fuel managment to run. YES you need more fuel for higher boost. but depends how high your going. as far as his set-up thats what your 02 sensor is for. it wats the A/F (narrow band) and compensates for lean/rich mixtures. more boost = more air = leaner.. so guess what the computer does.. dumps fuel. eventually you get to a point called FUEL CUT. you've boosted as High as you can "Safely" (i use th at term loosly) then comes the 550's and lexus AFM.. THEN comes the AFC and the WB. honestly for having 500+ posts your information is pretty misleading man, no offense.

 

[MA70Snowman]

Hmmm I got a LOT to learn. I don't know what wideband and AFC even are. Are they expensive? I need a scanner also, are they pretty expensive? Thanks....

in regards to our original thread starter.. you've got the tools to learn the PBS2. once you've learned it and you've gotten used to the car.. feel free to turn the boost up a little bit.. the HI/LO feature on the PBS2 is my favorite feature.. 6psi for regular driving and 11.2 PSI for when i want a good kick in the pants. if you still want to upgrade after that start researching some more, supramania is one of the best places for that... choose your own upgrade paths dependant upon what YOU want from the car.. there's a bunch of "RUFF" upgrade paths and generic routes but its about what you want from your car. when ur ready for th at we're still here.

 

[AaronsSupraMKIII]

in regards to our original thread starter.. you've got the tools to learn the PBS2. once you've learned it and you've gotten used to the car.. feel free to turn the boost up a little bit.. the HI/LO feature on the PBS2 is my favorite feature.. 6psi for regular driving and 11.2 PSI for when i want a good kick in the pants. if you still want to upgrade after that start researching some more, supramania is one of the best places for that... choose your own upgrade paths dependant upon what YOU want from the car.. there's a bunch of "RUFF" upgrade paths and generic routes but its about what you want from your car. when ur ready for th at we're still here.

I really appreciate all the info. I printed out all the info, and I am studying up on it. I have a few things I need to fix. There is a local Dyno, and import tuner in huntsville, so I am going to see him when I can, and have him tune my car for what I have now. I will go for lexus afm and 550's later on. From what I hear, I need a metal HG before I go with the bigger injectors and AFM, that sound right?

 

[MA70Snowman]

I really appreciate all the info. I printed out all the info, and I am studying up on it. I have a few things I need to fix. There is a local Dyno, and import tuner in huntsville, so I am going to see him when I can, and have him tune my car for what I have now. I will go for lexus afm and 550's later on. From what I hear, I need a metal HG before I go with the bigger injectors and AFM, that sound right?

true and not true. its not a HAVE TO HAVE item.. but its always a niceity.. above 12 psi the longevity of the STOCK HG significantly decreases. I run 11.2 psi daily on a STOCK HG and have no problems. it just depends on how it was rebuilt.. at the least retorque your head bolts (you can find more on that else where in the forums.) bottom line.. you can easily run basic bolt ons.. on a stock HG.

 

[JASONA70]

correct me if im wrong