Remember to take these VDR sheets with a grain of salt. The torque seems to be semi-overstated on the stock-turbo plot compared to when I got tuned, and the BBX plots would vary from 328-340-ish peak whp depending on the run. The tune I have on the BBX is a slightly modified version of my tune from the stock turbo in an attempt to try and bring the timing back up to roughly where it was for the stock turbo tune.

So yea ITS NOT PERFECT but you get the idea of what strapping this turbo on a basic bolt-on setup will do.

2008 EvoX
AFE Stage2 intake
Perrin inlet pipe
CBRD BBX turbo w/ ported hotside
Custom 2.5" UICP
Custom (but small) PTE 3" FMIC
STOCK o2 housing
STOCK downpipe
Megan Testpipe
Magnaflow catback
Hallman MBC@26psi
Tweaked DB Performance tune (will go back for a full retune once I get a downpipe)
Lightly crushed stock BOV
dw800cc injectors

Stock turbo was at ~27psi on the street peak, BBX is at ~26psi.



So I knew it'd be like this going into it, but the stock o2/downpipe sucks on this setup. I'll be adding a downpipe soon enough, but I just wanted to show people what exactly dropping in a BBX would look like. The car is REALLY SMOOTH and power just builds and builds and builds. BBX nedded me +60whp pretty easily but +0wtq so far. Hopefully an aftermarket downpipe will help the entire powerband.

FUN FACT! Stock fuel pump, stock injectors were enough for this setup until 7500rpm. With a downpipe I'm sure it'd start to go lean closer to 6500 making it unsafe. I got the 800's for a good deal and they are perfect for this setup on pump gas.

 

I really don't think the stock downpipe would account for that much of a lack in power. Those numbers are really really low, on VDR with my FP green using the evo-m comparator I usually score around 400 whp and 360 wtq... With an MR.

You have the testpipe and cat back which are the largest restrictions in the stock exhaust, I'm sure putting on a downpipe will improve your power but will it improve +70whp and +100 wtq? I highhhhly doubt it.

 

LOL are you going downhill or what? Lots of things can make numbers do crazy stuff with VDR, weight, wheel turning, blah blah blah. BUT when I was on the rollers @ DB Performance (dyno dynamics) I was running right around 280whp, and this VDR says 271, but that doesn't matter. What matters is the gains that I saw from the turbo.

I certainly don't expect +100wtq from a downpipe, don't be silly.

 

Good info.

Question, I thought stock GSR is 3550lbs, is that not right?

 

At Breinard International Raceway, me standing outside the car:


3480/3485 it was dancing back and forth between the two. Trunk emptied and spare tire out of the car, that'd prolly bring it to ~3500 or 3515 considering all the crap I usually lug around. I guess I could bump them and make the numbers higher, but again, that's not the point; it's the gains I'm looking at.

 

No hills, no tricks, no BS.

I use the same road nearly every time it's flat straight and I do it in both directions. We usually use 3 3rd gear pulls for my tuning purposes (I remote/road tune) All 3 pulls tend to be very similar for VDR results.

I'll post them up this evening when I return home from work. My friend who is also running an MR with FP green (only difference between our cars is he does not have cams and runs a HFC) makes around 350 wtq with 380 whp.

Your tune must be super conservative or something, because those numbers are super low in my opinion.

 

Just traded a few PMs with weebles, he has cams, a downpipe, different gas, weather, blah blah blah who knows. This is not a peak whp/numbes thread, its meant purely to show the gains of the turbo by bolting it on. Let's save the bench racing for another time, maybe when I have some real dynojet or dyno dynamics numbers to compare.

 

Weebles, like I said, it's a super basic tune, sorry it's not good enough for ya man I'll get fully tuned once I get the downpipe (and maybe ported manifold) on the car.

 

Overlay looks like mirror image of what I see on pump on our dyno as far as curves and gains between the two turbos with those mods.

These Evo 10 stock housing upgrades that actually flow well, all seem to have the same type of curves on pump. Slightly lower (or the same) peak trq as the stock turbo but a crap ton more power up top.

I'd say you are pretty inline.

- Bryan

 

The BBX lite is the only combination we came up with (out of the 9 we tried) that would pick up good torque over stock,

but it doesnt make QUITE the peak power of the full

glad you like it!

run it at 28psi and youll see more gains

cb

 

Good info.
Why did you bring back the timing? i think a fair comparison should be with both turbo's tuned, as we all know that a new turbo needs a new tune.

I don't trust the torque numbers on the vdr, for some reason peak torque always comes late!
For example, your stock turbo has peak torque at aroud 4000rpm, which i think is like 500rpm later than what it really is.

Spool difference is about 850rpm which seems alot. Bryan, what spool difference do you see on your dyno between stock and bbx turbos?


Tks

 

Yup I see exponential gains per psi increase up until around 29psi.


Here is spool overlay example on 91 oct, 3rd gear:



On higher boost (E85) it spools a bit quicker:



Scheides, here is an overlay off our dyno of both turbos on 91, in 3rd gear to show your results are pretty inline so far:



- Bryan

 

YES SIR!

I'd love to drive a BBX Lite car sometime, I bet it is a perfect balance between power and streetability. Honestly if I hadn't had the BBK and lusted for the BBK-B for so long I would have jumped on the BBX Lite in a heartbeat.

The timing was so off from the turbo hitting different load cells it was not even a close comparo. Peak timing was like 11° at 7000rpm, but usually 10°. So I just bumped timing 2°*across the board in the upper load section of the map and then an extra 2° from 6000+, smoothed it a little, and called it good. I'm not a pro-tuner, I don't have an actual dyno to tune on, and honestly the setup isn't complete. I just wanted to share this for those who may be interested.

I liken this setup on stock injectors and low-ish boost to the Stage3- Audi S4 guys that have upgraded turbos but stock fuel system tuned for stock turbos. Start adding more mods though and the stock setup won't be enough, I think we all know that now

 

Thanks bryan! I think with a few more parts and some tuning (yay more boost/timing!) I'll be a very happy camper! I'm really happy with the turbo already, I did an autoX with it Sunday and it was FUN FUN FUN!

 

Yeah that thing needs a tune...