Max Boost for stock BOV (Evo3)

[prozac]

I've recently done up complete intake piping, increased boost to 1.3bar and tuned on E-Manage for AFR/Ign.

Car was running fine for a few hours until i decided to floor it going up the hill. Since I live on a hill, I didn't notice anything until going out again. On the next drive, I noticed the following:-

- Induction sound during boost is noticably louder (louder hiss)
- Not much acceleration during boost, but boost meter reads 1.28bar max
- Massive misfire/jerk upon liftoff

No problems during low boost (<0.5bar) or non-boosting.

Could this be due to the BOV? I'm using a stock one. Any recommendations? Should I VTA or recirc? Still on stock MAF. Fuelling seems ok and steady @12.0 during the dyno tune.

 

[fluffy?]

with MAF u gotta use recirculate..

 

[jinkl]

yeap , easiest recirc would be Greddy Type-s

 

[renxun]

other than that when u boost up hill on 3rd, notice your boost meter reading as u pull up... if it is losing boost then u got a bov leakage

 

[kenzo]

yup u gotta recirculate the air back to intake...

 

[fluffy?]

type-s recirculate meh?i didnt know.hehe

 

[prozac]

Thanks guys! I'm looking at the Type-S too. I believe it comes with an optional kit to make it recirc.

But the root of the problem turned out to be a clamp which went loose. Replaced it with a stronger one and now the car is happily boosting again. I'm still looking at a replacement BIV though, saving cash for the day the stock one falls apart.

 

[fluffy?]

i know stock ones never last.heheh