Standard Boost On An 2.0t With A Recon Turbo?

[craig f90 0]

Hi, guys its been a while since i last posted on here so appoligies if ive put it in the wrong section.

 

I had the standard T25 rebuilt on my 205 2.0t around 8 months ago. Just recently it felt like it wasnt boosting very well so i bought an boost gauge.

Im lead to belive standard pressure is 0.5? but my boost gauge is saying either 0.2 or 0.3. ive had a rummage for leaks and replaced most of the hoses and clips but its still the same. some folks are getting 0.6,0.7 even 1bar. Im only getting 0.3 if im lucky

Thankyou,

Craig.

[sonofsam 5]

Hi Craig . Long time no speak, how's tricks? (apart from the obvious!)

 

At a guess > http://forum.205gtidrivers.com/index.php?s...osting&st=0

 

Hope that helps mate!

 

Sam.

[tom_m 0]

the xantia boosts to 0.4-0.6 bar when on OE boost control. try replacing the boost control solonoid it sounds like yours is stuck open to me, or whack a dawes device on it and set the boost yourself.

Edited August 23, 2009 by tom_m

[craig f90 0]

Hi Craig . Long time no speak, how's tricks? (apart from the obvious!)

 

At a guess > http://forum.205gtidrivers.com/index.php?s...osting&st=0

 

Hope that helps mate!

 

Sam.

 

Hi sam,

all is well apart from the ruddy car. I bought a house in march so ive had no access to a P.C which is really anoying cos i love my fix of the forum. Ive got the car to boost to 0.5 now. with the aid of a new second hand i/c. small spit in the casing.

 

Tom i thought the same to be honest. Being the last thing to check. anyway turns out it was the cooler.

Thank you.

[jonnyturbo 3]

did your turbo smoke on idle before you had it rebuilt?

[pablo 0]

Mine will only boost to 0.3 bar (4.5psi ish) no matter what Ive got in. As I bought it it had the oem solenoid + a bleed valve. Both binned. Fitted an electronic boost controller but still can only get 0.3bar. Also tried a bleed valve on its own, same result.

 

To test the turbo we clamped the pipe to the wastegate and ran it. Boost went straight to 1 bar. So the turbo is fit enough. Mechanic suggested the actuator is set incorrectly and thus even a small amount of boost is enough to open the wastegate. Ive checked the gate and its moving freely etc with the arm disconnected. Adjusting was too big a pain on my back on the drive.

[Henry Yorke 269 3 Cars]

I get 0.5 bar on mine with a brand new turbo and everything else standard. It has run that way for a couple of years.

[Tom Fenton 1,542]

Pah, all these girly boost figures, man up you lot and run 1.3 bar like me!

[Galifrey 1]

Mine will only boost to 0.3 bar (4.5psi ish) no matter what Ive got in. As I bought it it had the oem solenoid + a bleed valve. Both binned. Fitted an electronic boost controller but still can only get 0.3bar. Also tried a bleed valve on its own, same result.

 

To test the turbo we clamped the pipe to the wastegate and ran it. Boost went straight to 1 bar. So the turbo is fit enough. Mechanic suggested the actuator is set incorrectly and thus even a small amount of boost is enough to open the wastegate. Ive checked the gate and its moving freely etc with the arm disconnected. Adjusting was too big a pain on my back on the drive.

 

Could be the wastegate spring is shot, if thats the case, the exhaust pressure can open it

 

Superb actuator setup video here http://www.tuneyfish.com/video_player.php?vid=235

Edited September 18, 2009 by Porsche911r101

[pablo 0]

ok so I think my actuator is ok, Ive been fiddling with it and get varying boost right up to 1.3 bar. I actually think its my boost controller thats faulty. The solenoid seems to be dead.

 

joy oh joy.

[paulvancraen 0]

The solenoid normally has 3 connections:

- wastegate

- inletmanifold/boostpipe

- airfilter pipe

 

What I do is place the boostcontroller/bleedvalve between the wastegate and inletmanifold/boostpip hose.

And de-attach the solenoid completely, but still have power running to it. So the management still thinks it's connected.

 

This way you won't get any motormanagement error + you can edit the boost very easily.

Make sure you have a boostgauge though

[pablo 0]

Ive the std solenoid completely removed mate. Just running a Gizzmo IBC. No silly lights at all and its been at 1.3 bar the odd time lol.

 

Hit boost cut a few times too.

[paulvancraen 0]

Are you sure you connected the motormanagement light on your dashboard?

 

Mine turns on the light when I'm making too much boost. I.E. over 1 bar.

[pablo 0]

lol not guilty, I didnt do the conversion.

[rapidcossie 0]

thought you could run just under 1 bar on a standard set up?

[paulvancraen 0]

Thought so too, with standard injectors. I just ordered my wideband controller and going to measure at what boost it's running out of juice.

A friend told me at 1 bar it's knocking like hell. So I've put it at 0.8 bar just to be on the safe side.

[rapidcossie 0]

Thought so too, with standard injectors. I just ordered my wideband controller and going to measure at what boost it's running out of juice.

A friend told me at 1 bar it's knocking like hell. So I've put it at 0.8 bar just to be on the safe side.

 

 

think it boost cuts at 1 bar.

 

ill run mine at 12 psi

[paulvancraen 0]

Not sure on this, haven't had it above 0.9 bar.

 

A friend had it fully open a while back, boosted till 1.4 bar. And it didn't cut, so I don't know how it would boostcut...

[pablo 0]

mine has been at 1.3 bar and not cut but only for a short time. it takes a few seconds at over a bar for it to cut Im guessing.

[Henry Yorke 269 3 Cars]

The ECU has an onboard MAP sensor that only runs to 1 bar. To run more than this you need to have a stand alone ECU (like big manly Tom!) or desolder the MAP sensor from the board, add a Motorola one with a higher limit and remap your ECU to cope.

[jonnyturbo 3]

mines running at 0.8 bar, above 1 bar and it will boostcut. you could always try an ajustable fuel pressure reg with some higher flowing injectors but i cant see it helping much.

 

edit: ppp when your accelerating and dip your clutch to change gear do your revs take a second or 2 to die down?

Edited September 19, 2009 by jonnyturbo