DYNO NUMBERS part 2 (much better)
 

Well, as promised new dyno graph:

http://i137.photobucket.com/albums/q...IMG_4803-1.jpg




I forgot to tell him to include the MAP graph, but can tell you that it was 7.4psi all the way through on the dyno MAP sensor and 8.2 on the Haltech. I guess it has something to do with calibration.

I let off a bit near the end, so it could have been a bit better. Either way I am very happy with the results, and the response.

Turbo is a Precision T3 6162 .81 a/r. Timing is conservative and a/f is about 11.5:1.



I should mention that there are no other mods done to the motor. OEM headers, OEM plenum (no plenum spacer), ...ect.

Looking good. That turbo does seem to run out of air at high rpm (or is held back by exhaust restriction), but that's SOLID, efficient stock block power. What kind of exhaust for that run? The midrange torque is really good for that boost level, which is the only reason the torque drop off looks kind of bad on the graph.

wow great numbers! I am really considering this route.

It's not the turbo that ran out of air it's the EBC not being set for the top of the RPM range. Yes, I did have to add a bit on the boost controller after 5500rpm to get a perfectly flat boost level. It is a GT35r compressor wheel, and will not run out of air at this power. Probably would have got 410whp if the boost didn't drop there a bit.

The exhaust was a straight (with resonator in the middle) 3" all the way to the back.

Yes you can definitely feel the torque early on, it is great, and really puts you in the seat at 4000rpm.

wow excellent results dude.

when did the car see full boost? Any vids or pics of the exhaust you ran?

Hi, is it possible to buy just the exhaust piping? PM me please.

No, I don't have any footage of this run. My friend (camera man) was working today so I didn't bother.

Full boost at 3660rpm, this it is a journal bearing turbo.

Wow the car will be very fun to drive on a road coarse! Awesome work :)

Nice work Sasha!!! I'm lovin the results!! Now let's see what this kit can do on a built motor!!

Great results!

sickkkkkkkk for absolutely no other mods...

edit: so from the previous run.. with only 2psi more you gained almost 50whp! and im sure you could of gotten a bit more like you said.nice! me likey!!

I see. I don't think it's a compressor side issue, but a turbine one. And it's not really an issue, just speculation that describes the shape of the curve. (Your kit is making way more than my 700bb twins did at 8 psi when I had 4.25" 200 cell custom cats welded into 3.5" downpipes, though mine was a low compression motor and a 5AT. Any exhaust flow restriction just sux with turbos. With the cats out, boost on wg springs went up 1.5 psi and power went up 50-60 whp. That was an expensive experiment with my turbos mounted high!).

I think stock blocks folks should tune it to maintain ~ 325 wtq across the rpm band - will produce linear powerband, 400+ whp at redline - reliable wtq and sweet peak whp!

I wanna see this thing with a plenum spacer, headers (maybe good maybe bad), and test pipes. I think you would be looking at a significant increase in power at the same boost levels.

testpipes?? what testpipes

very nice.

heres the powerab at ~8psi. very comparable :thumbup:
http://www.handsonkitchen.com/pics/install/dyno.jpg

the tq is way different if i'm reading the two dynos correctly. On the powerlabs kit, tq is a little under 350 ft/lbs at 3000 rpms. At the same rpms, this kit only produces 225 ft/lbs and doesnt reach 350 ft/lbs till around 4500. What causes the huge difference?

could actually just by the dyno... dyno dynamics load brake could easily cause a turbo to spool faster then an inertial dynojet if desired... gotta compare apples to apples and unfortunately i wouldnt bother trying to compare those graphs.

A friend of my made 720whp on a dyno down south of the city (don' know the type of dyno) at 26psi of boost. Well, last night I saw the dyno graph at this dyno and it barely got over the 600whp mark.


It is easy to inflate numbers to make a setup look good. I didn't, it is what it is, and there is no need to sell false information (not saying that others are, just saying). I posted all my dynos, 4.5psi, 7.5psi and finally 8.2psi of boost. Nothing to hide here.

Also, the Powerlab is a BB turbo and does spool a bit quicker than a BB turbo. So to have a true comparison I would have to put a GT35R BB turbo on and go to the same dyno, with same boost level.
The donw pipe lenght on this setup is much shorter, so that would be my big advantage.



A dyno is a tuning tool, and I don't really care much about comparing graphs. As long as the car is tuned well, that is the most important thing. I can say that this and real world acceleration on the street is very close, the boost graph in both cases are identical. The dyno is brand new, and still well calibrated.

Great numbers and good build. I cant wait to see what happens with this in the future. Looks like a really solid product!