Bolted an IHI VF48 on a 2002 WRX today, oh boy, but now...

Blob · Sep 19, 2010

Hi, as the title says, I had a IHI VF29 in my 2002 WRX and removed it today and bolted on a IHI VF48. The midrange torque is unbelievable, but that lasted for a short time, actually I have not noticed anything until I made a long drive, when I noticed that the turbo would spool up and kinda slows down, then spool up again and so on, you hear it going up and down all the time beyong 4000 RPM. The power is there but not really as amazing as on a sprint. I have no idea what could be causing this, has anyone expereinced somthing like that? could this be a lack of fuel supply? but it actually sounds like the turbo itself is going up and down??

thanks
rick

EJ257 · Sep 19, 2010

Did you retune for the VF48?

Blob · Sep 19, 2010

Retune

No, I just bolted it on, but I am afraid the turbo itself is not spooling as it should

rick

T0rque · Sep 19, 2010

If you didn't correct for the new air coming in you could easily be experiencing the problems your having. Retune and check back

Blob · Sep 19, 2010

Engien tune ??

Where can I have the engine tuned?
rick

MainFrame · Sep 19, 2010

Blob said:
Where can I have the engine tuned?
rick

What type of engine management are you using/planning on using? And also, where do you live? Those two pieces of information are essential to answer your question.

Or I could just say, you need to go to AWDTuning in Flower Mound, TX. It's only 20 minutes from where I live, so obviously that's where you need to go.

To reiterate, it's not going to run right without a tune.

Dowrxson · Sep 19, 2010

Exactly or if you dont have anywhere aroung you , you can go through cobb and pay them for one of their tunes. And the access port

irvin787878 · Sep 19, 2010

i am not a pro at tuning. but doesnt cobb only have maps for certain parts? can u get custume ones from them? idk just asking.

Bolted an IHI VF48 on a 2002 WRX today, oh boy, but now...

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