Hi folks,

Since i got a boost gauge fitted to my MY01 WRX i like to keep an eye on whats going on. I used to see .9bar whenever i floored it - it would hold that for a "while" and then trail off as the revs got higher and higher.

Now, i seem to only get 0.9bar from v low revs with max throttle, when the car comes onto boost. For the rest of the time i see apprx 0.6 - 0.7bar max if im already in the boost zone (i.e. i floor it at say 4000rpm)

Is this normal or should i be seeing 0.9bar every time i floor it. The car seems a bit slower than before!! Could something be wrong?

Anyone know anything about this?

Jza

 

Anyone?

 

not sure but the my01 turbos do have flaps in the manifold, you can see the little box that work them bolted to the manifold it's got something to do with exhaust emissions on start up so they could well work as you drive it altering the boost pressure in the manifold to keep emissions low.


other wise don't know yet

 

pi55 flaps mmmmmmm

 

Jza

What you're describing is well known. It is a feature of many turbo charged engines which allows them to pass emissions tests (on full throttle tests). The lower boost that you experience should only occur if you hold the revs above around 3500 for more than a couple of seconds and then floor the accelerator. Apparently this can be avoided by changing down a gear to get full boost or by momentarily lifting off on the accelerator.

D.

 

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:<HR>Originally posted by DJB:
<B>Jza

What you're describing is well known. It is a feature of many turbo charged engines which allows them to pass emissions tests (on full throttle tests). The lower boost that you experience should only occur if you hold the revs above around 3500 for more than a couple of seconds and then floor the accelerator. Apparently this can be avoided by changing down a gear to get full boost or by momentarily lifting off on the accelerator.

D.[/quote]

Thanks!

Jza

 

I installed a Manual boost controler and ITG panel filter in a friends car yesterday. No more iffy boost response.

I myself have a Blitz DSBC installed, works wonders.

Ken