Atlanta93LE

iTrader: (5)

Dynapack dyno. A bit less power than I was hoping for, but I'm quite pleased for the money invested. I will post a log of the pull when I get home. Thinner, lower line was at an "improper" ramp time.

Useful things I learned while on the dyno (3 pulls, power pulls only):
1) I accidentally had an old map loaded with EBC DC values set to start opening the WG at 3000rpm instead of 3600rpm. Oh well. Boost held steady otherwise.
2) Apparently I hadn't tuned very well at redline, as I went so rich I thought God himself was powering my injectors. Very rich up top.
3) Dip in power at ~5200rpm is from a very rich region.

Some things I haven't figured out:
1) Why would the torque be dropping so much as I climbed into the rev band?
2) Not sure what was causing the richness at 5200rpm, because running the pulls through VE Analyzer didn't alter those cells much.

Braineack

iTrader: (62)

torque loss is most likely from the exhaust....sure the boost wasn't dropping a pound or two by redline? really not bad for 8.5psi.

Atlanta93LE

iTrader: (5)

Ah, the exhaust. Indeed.
Boost was pretty rock solid after the transition into max boost (boost DC issue).

m2cupcar

iTrader: (5)

IGN timing will also loose power up top. My Link pulled a full 10* of advance at higher rpm for AIT compensation and the torque curve looked just like that. I still think there's a lot of potential in both the top and bottom end. I expected to see more torque sooner.

Ben

iTrader: (33)

The dyno just wasn't right. My boost curve is just so much better on the street than the dyno, and Ben's car wasn't spooling well on the dyno either.

I have Ben's pulls on tape, so once I figure out how to hook the cam to the computer, I'll upload. Probably just a matter of finding the right drivers/software and a USB cable.

Atlanta93LE

iTrader: (5)

For sure. I think part of that is due to my boostDC screw-up. With the right table, I saw about 1.5-2psi higher between 3-3.5k rpm.

Atlanta93LE

iTrader: (5)

One thing to add that I hadn't thought about...I'm using a paper media air filter from a late '80s Prelude That doesn't help low end torque any!

Atlanta93LE

iTrader: (5)

As promised, a snapshot from the MS log taken during the pull. Also, I'm throwing up a cleaned-up shot of the pull.

David_LB

Where did you get your manifold? Did you make it? I'm planning on going with a evo 3 16g and as far as I can tell Im going to have to build my manifold. Do you have and pics of how you did it? Any "wish i would have done this this way" ? Internal or external wastegate?

Atlanta93LE

iTrader: (5)

I bought the manifold and downpipe as a set from somebody that hadn't ended up using it; he had it made custom by Turbo Tony of GReddy downpipe fame. It's schedule 40, I believe (very thick anyway) and places the turbo real low to allow for the large, straight downpipe. Internal wastegate. If I were to do it again, I would change my intercooler setup, but I absolutely love the manifold/turbo/downpipe combo.

Atlanta93LE

iTrader: (5)

By the way: looking back at the logs posted here, and checking my VE table...I was DAMN rich between 3000-4000rpm, you can see it in the log image posted. Looks like VE Analyzer richened up the cells at the way top, which are only averaged in maybe 25% due to the kPa increments), when I hit overboost protection while tuning my EBC. Huh. I've got some almost-out-of-range cell tuning to do by hand.