100% off topic... but...

How ya like your vf39 so far?

I'm bidding on one right now

 

It's pretty awesome. I did the install myself using two threads posted by WRXreX (props). The turbo was easy, just make sure you have new gaskets.

The injectors on the other hand...

BITCCCCCCCCCCCCCCCCCCCH. Actually, they were't that bad, just make sure that you have a small 10mm wrench handy. I didn't and wasted a bunch of time trying to work around unbolting a breather on the passenger side.

 

i've actually got an 06 so inj aren't nec... sweet though. no overboost probs?

 

No over boost problems that I have noticed yet. I see about 18psi at full boost, but I finished on Monday and with work I haven't had much time to drive it.

Plus Seattle traffic isn't very conducive to "spirited" driving. Although, I did get one really good pull up to triple digit speed. I felt that my stage two setup used to really fall off above 80mph. This set up was still pulling hard at 100 and then I promptly backed off as I do not condone excessive speeding :rotfl:.

 

do you feel less pull off the line?
That's sort of what I'm looking for... the torque on the stage 2 06 map scares me a little... the vf39 is actually lower, and spools later. So it would lead me to believe it's safer on the tranny.

 

Definately more lag, but I'm running a 2.0, so I expect you'd be much better off. I looked at the Cobb OTS maps at stage 2, you're running 300ft/lbs. My stage 3 map is 349hp and 299ft/lbs.

Per Cobb, on my set up I gained 65hp, but only 15 ft/lbs from stage 2 to 3. To be honest you feel it when you drive. At stage 2, the TD04 spools so quickly that you really feel the torque. Here that lag relatively makes the torque less noticable. You don't really get that whhoooooooooooo it's a smoother transition, but the power just keeps comming longer.

My interpretation of torque and hp may be incorrect, but my interpretation of how it feels should make sense.

 

Time to take this thread back to it's roots....

I have looked on the various forums and found one posting on NASIOC that had a flow test sheet on the MY06 injectors testing at 560cc.

I have read a metric anal tonnage of posts with varying flow rates from 510cc to 565cc.

So the question that I have is...

Can anyone actually tell me the flow rate of Sti Pinks?

 

So the question that I have is...

Can anyone actually tell me the flow rate of Sti Pinks?

Subaru rates them at 525cc. They do tend to flow closer to 565 during flow tests though. Unfortunately, there is no concrete answer for this.

 

Ok, here's perhaps a better way to ask this.

MY06 injectors have been flow tested at 560cc and there's a flow test sheet posted in one of the NASIOC forums that proves it.

If the Sti Pinks flow "around" 565cc in flow tests, can 06 injectors be considered a blue version of the sti pink.

So far, no one can tell me that there is any discernable difference.

Has anyone actually flow tested an Sti Pink Injector?

 

Word. I read that too.

As far as the Cobb Spec thing goes, I was thinking the same thing.

Really the whole reason I started this thread is I feel like my car is running a little rich with the OTS Cobb VF39 map. I assume that part of this is Cobb just being conservative in their mapping, not wanting to run to lean.

I just wanted to make sure that there wasn't a big difference in injector flow that would be causeing me to run rich. The simple solution is to just get a wide band protune, which I was planning on doing anyway.

 

Thank you for an excellent answer. That is exactly what I was looking for.

This also seems to be consistent with my suspicion that I'm running just a little rich.

 

Not sure how much this post will help you but its just some info I remember reading over on nasioc, Timdog has probably seen this also.

Someone had a thread about how STi pinks and 06+ wrx Injectors are the same Injectors just different caps on the end to get different cc ratings. So if I were you I would pull them out again pull the caps and have them tested and balanced, then go find your self a tuner and have them tune your car for what you have done to it. You will love your car even more once you leave

 

I'm not sure if the end caps are different or what, but removing them ups the flow by usually about 200cc. For example, modding STi pinks gives you about 720cc of injector. You definitely need a retune before you drive the car if you do this mod.

 

After a bit more driving, I'm definitely running rich. My butt dyno is telling me that I should be making much more power. I actually think that I may be making less power than stage two.

The car runs great at idle, just not getting that much power, except in that above 80 mph zone, which I can't explain I may just be on drugs.

 

Ok, so the sagga continues. I talked a reputable tuner in the Portland area and he said that the '06 injectors flow the same and that its Cobb's crappy OTS map. He said that he seen Cobb stage two maps put down more power on a dyno than a Cobb's stage 3 vf39 map.

Protune here I come.