celica boost controller

[sameerb1]

I m planning on buying a boost controller for my turbo, actually i have already ordered it.

one thing i wanted to make sure, do i need to install a bov before installing a boost controller for any reason? just wondering.

and i will sure install a boost guage before installing the controller.

one more thing, is it easy to install a boost controller, its a Manual one from ebay, vodoo, if anyone knows about it. is it any good? its cheap tho!

[ST185]

Good idea on the boost gauge. It's should be the first one that goes in.
And No. You do not need a BOV to install a boost controller.
Though it is a good idea to have a BOV or BPV to prevent compressor surge (with or without a boost controller)

A ball & spring MBC is cheap and work OK.
Some people have trouble with boost spike, some don't.
Just try to keep the vacuum line as short as possible.
BTW, you can even make one by yourself.
http://www.geocities.com/chmwatson/FAQs/mbc.html

[89CelicaGTTurbo]

once its in, can you let us know how it worked out, cause i need to buy one but just dont know which one to get. thanks.

[sameerb1]

here is the note in it...
NOTE: Before making and installing a MBC you MUST have a Boost Gauge installed to monitor the changes you will be making while adjusting your boost. Failing to do so may result in nasty engine destroying demons attacking your engine. I would also highly recommend doing the fuel pump rewire mod if you plan on increasing boost beyond 15 pounds

well, its asking to rewire mod on fuel pump, i m already running a Ford Mustang fuel pump with wiring on the car after my 3sgte swap for high flow.

and now i m thinkin of making one myself and see if i succeed in making on spring ball boost contrler myself, if i succeed, then i dont need to buy one. i can get the stuff in the market here in middle east instead of waiting for the voodo to send it to me and i bet they made it the same way.

i will install my boost guage(its seriously difficult to find around here so it mite take around two weeks) and then create my boost contrller and i will post the results over here.

thanks a lot for showing me an easier way. but wuts 15 pounds boost? is it 15 psi?

[sameerb1]

never mind, PSI stands for pound-force per square inch

but other questions please reply to them about the fuel pump!

[ST185]

Our stock fuel system can support about 275 whp.
After that, you are on the edge.
On stock turbo, keep it below 14 psi (0.97 bar) and you should be OK.
You are pushing the limit if you boost stock turbo more than a bar.
You will also need to upgrade fuel system if your are planning to go beyond that (FPR, injectors, pump, and fuel management or standalone EMS)

[sameerb1]

Ok, now i installed a boost guage in my celica st185 3sgte.
i dunno if its fixed properly, but the max boost it reads is 3psi. could it be possible me having a 3psi boost? or its just the gauge is not working properly.
can anyone tell me a link where i can check the proper installation with images procedures for guage?
can anyone help me with increasing the boost rite now witout a boost contrller?
please please please reply someone!

[ST185]

Gauge could be off. What gauge is this?
Did you check if there is any leak?
What is the vacuum reading at idle?
Check the gauge with an air compressor.
http://www.alltrac.net/phpBB2/viewtopic.php?t=6822

Do not increasing the boost with boost controller if your car is not working properly.
It is not a solution and it is an invitation for disaster.

[sameerb1]

mine one is done completly wrong. i got it done from a stupid local electrician who people got theirs from.
i knew i shouldnt have trusted that dude and done it myself with you help!!!
now lemme try to do it. but dat fuckin idiot had cut my tubes, i m goin to kill dat basterd!

but i still did not get it, :


2) Remove the rubber cap.
Q.but i dont see a rubbber cap
3) Connect the rubber tube. Use the clamp to secure it.
Q.it says the rubber tube is going to the guage, but isnt my nylone tube is going to the guage?
4) Connect the other end of the rubber tube to the nylon tubing
(provided with the gauge). Always use Teflon sealing tape.
Q.how do i do it? i have a 3 way connector for tubes

please explain these questions, please please please!!!, and mostly the Q 3, where is the tube from and where it goes? does this connect to the Question 4's tube?

HELPPPPPPPP!!!!!!

the idle reads in minus boosts by the way, minus 5-10 psi

[ST185]

Do you have 2nd generation 3sgte engine?
There should be an unused vacuum port behind the intake manifold.
It's the same one as circled here
http://www.alltrac.net/phpBB2/viewtopic.php?t=14113
The port is 5/16" in diameter. So, you will need a 5/16" rubber hose
and an NPT brass adaptor to connect that to the nylon tube.

If there is no adaptor comes with the gauge, go to your local hardware store.
Tell them you need a foot of 5/16" rubber hose, clamps, and show them the nylon tube.
Ask them what they have to connect the rubber hose and the nylon tube together.

It goes like this:
Vacuum port --> rubber hose --> adaptor --> nylon tube --> boost gauge

Note that this is just one method to connect the boost gauge.
Actually, you can use other vacuum sources from the intake manifold.
Another common used source is from the MAP sensor (turbo pressure sensor)
If you are using that one, you will need to "T" it of the vacuum line going to the sensor.

By the way, the vacuum reading at idle should be around 17-20 in.HG (not PSI)
See pic on that first link.

[sameerb1]

ok, i did the gauge thingy myself this time and made sure that its fixed properly from the empty vacuum at behind on the lower edge. it was pretty hot and a really hard task with the strut bar gettin my hands at the back. but i did it.
the gauge still shows full boost as to be 4psi not more its showing this time. i tried it on the first, second, third and the fourth gears and all read the same.
at idle the guage shows complete on the left side. now i dunno if this is the guage but i m posting the pix of it.
and when i rev the engine, it goes upto zero and then jumps down as with the rev.
so what do you think now?

and ya, i will take some pix of my intake soon and post it here. on the right hand of the intake, there is a tiny tube coming out, its working as a vacum(ofcourse i can only see it as in idle). i dunno of what that is.

i bought the car from a dude who told me the 3sgte is of third gen, but i assum its the second gen 3sgte.

i also hear another air leak sound from the hood when i opened it and try to see it my setup was leaking, altho it wasnt leaking any air, but i still hear something leaking. should i check the intake fully?

here are some pix of my guage if you see and tell me if it reads in HG. (please excuxe the picture quality here )

[ST185]

Does your car come with an AFM?
It is between the turbo and the air box (air filter)
http://members.westnet.com.au/wtfaut...le010thumb.jpg
If so, your is 2nd generation.

At idle, your engine should pull 17-21 in-HG (0.575-0.711 bar) of vacuum.
When you rev the engine in neutral, the needle should bounce between 0.575-0.711 bar AND zero. (on the vacuum side)
If you rev it real high, sometimes, it will go on positive side (positive pressure), but not too much.
On 4th gear pull, your max boost should be around 8-10 psi.

[sameerb1]

so you mean till the 3rd gear pull, 4 psi is good? cuz it doesnt even go more.
i will try to do my max on 4th gear. and lets hope it works fine?

about AFM, lemme go home and check out my celica(i got a kia avella(shitty) for office and celica for after office hours ) but i think i got it wuts in the picture-isnt it a Air Flow Sensor unit? if it is den definitly i got it!

[sameerb1]

i have the AFM!