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Old 08-06-2007, 06:06 PM   #1
OCrex
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Default 05 STI, FP Red on dyno log

hey guys after working all weekend on this install i finally finished it. had to grind the block for the lower coolant line, loosen the intake manifold to muscle on the inlet pipe, which may i say does not fit correctly no matter what perrin or FP say.

Got everything done about 2 hours before i was scheduled to get tuned.

Mods:
FP Red 7cm housing internally gated
perring 3" inlet
cobb 70mm intake
invidia divorced wastegate dp
stock up
aps 3" single tip exhaust
pe 800s with pump
ssac fmic core with aps pipes and aps fmic bov

OH, and the TGV's are still installed!! had to remove the rear sensor on the passenger side though for the turbo to clear.

DYNO: Dynolog (low reading)

Numbers before the turbo swap with everything the same but the fmic, inlet and turbo:

228whp, 264wtq

Numbers now:

341whp, 303wtq 19psi

i gained over 100hp from the stock turbo and it pulls to redline. Problem is with the IWG, i'm having boost creep up to 22-23 psi at redline. my tuner tried to add fuel up there the best he could but the wastegate was 100% open and still building boost.

I'll post all the graphs when i get home so you guys can take a look. I'm very impressed with how responsive the car is and i think those are pretty good numbers on this dyno. I believe a stock sti dynos below 200 on this.

graphs coming.

CJ
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Old 08-06-2007, 06:10 PM   #2
xdrian
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Quote:
Originally Posted by OCrex View Post
OH, and the TGV's are still installed!! had to remove the rear sensor on the passenger side though for the turbo to clear.



CJ

that could be a problem ! they not opening !
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Old 08-06-2007, 06:17 PM   #3
BillMac
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may have been a lil easier to get the inlet on if the intake manifold off
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Old 08-06-2007, 06:18 PM   #4
OCrex
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what problem would that be? if one of those plates isn't open, you'll know it!
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Old 08-06-2007, 06:19 PM   #5
OCrex
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Quote:
Originally Posted by BillMac View Post
may have been a lil easier to get the inlet on if the intake manifold off
yes it would have been, but with the diameter being what it is and the dogleg left at the end not being aggressive enough, it still got crimped like a motha on the manifold right before the turbo. either way, we got it in.
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Old 08-06-2007, 07:26 PM   #6
blkscooby
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Sounds like an 8cm hotside might have helped with the creep issue.
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Old 08-06-2007, 07:29 PM   #7
AspenWhite_STi
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Why didn't you go with the 8cm exhaust housing to begin with? Are you planning on running an external wastegate later on?
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Old 08-06-2007, 07:42 PM   #8
BOXERVIK
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nice, especially since u were able to keep the tgv, post a dyno graph and where did you get tunned at
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Old 08-07-2007, 12:11 AM   #9
STIred05
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I would look for a vac pre turbo I had the same thing w/ my 7cm red... it turned out to just be a vac leak pre turbo.
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Old 08-07-2007, 01:11 AM   #10
wcbjr
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EWG will help tremendously.
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Old 08-07-2007, 10:47 AM   #11
OCrex
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well, i didn't go with the 8cm because i bought this turbo from a guy here on nasioc, although it was brand new. i do plan on going EWG in the future.

don't think i have a leak, we watched the wastegate open up 100% and the turbo was still building boost. can't hurt to check this out though.

I got it tuned at Mavrik Motorsports by Ed (formerly of ESX, Brainstorm...) He hadn't tuned in a while. took him 8 hours and he didn't start till 8pm sunday night. i was there till 4am!! he never gave up though.

Here are the graphs. The third shows my old dyno vs. the new. my AFR's go a bit lean at redline due to the boost creep. Ed tried to add fuel up top but wasn't noticing any increase in fuel past 85% duty cycle. He couldn't figure out why.

The car feels very responsive and is an animal when it comes onto boost. i love the high pitch whistle the turbo makes as well.






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Old 08-07-2007, 01:50 PM   #12
benw
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nice! Your car is a great candidate for alcohol injection... you could safely run that 22-23 psi number I'd bet.
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Old 08-07-2007, 02:07 PM   #13
TopEndPull
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thats nice since your able to still keep the tgv's
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Old 08-07-2007, 02:38 PM   #14
OCrex
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thanks guys. i thought it was a good number on that dyno, especially with the tgvs still in. i plan on removing them, installing an EWG and adding meth hopefully early next year. i'd love to break 400 on that dyno.

got to learn to drive my car before i do that. i have 140 more hp and 100 more tq at redline now so it's a handful for me right now. fun as hell though.
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Old 08-07-2007, 02:57 PM   #15
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graphs look nice, although its hard to see much definition with those thick lines in that chart. did Ed purposly lean it out up top, looks like it worked well the power just keep climbing.

edit: read your comment nevermind ^
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Old 08-08-2007, 12:31 AM   #16
benw
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he says earlier why

Quote:
Originally Posted by OCrex View Post
my AFR's go a bit lean at redline due to the boost creep. Ed tried to add fuel up top but wasn't noticing any increase in fuel past 85% duty cycle. He couldn't figure out why.
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Old 08-08-2007, 04:18 AM   #17
STimo
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Nice, did ed open a shop up in fullerton now or is he just tuning there?? He tuned my buddies 350Z with APS TT kit and he did a great job, that car was alot of fun.. Also did one of my buddies sti's that came out really well..
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Old 08-08-2007, 04:54 AM   #18
Equilibrium Tuning
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Is this on 91 Octane and do you have an EGT gauge?

-- Ed
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Old 08-08-2007, 07:47 AM   #19
crazymikie
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Post up a log if you can, specifically with AFR and MAF g/sec. If the MAF limit wasn't upped or if the intake wasn't scaled correctly, this could account for what you are seeing.
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Old 08-08-2007, 10:31 AM   #20
OCrex
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Ed is currently working at South Coast Subaru, but will be moving to Irvine Subaru as the shop forman. He is tuning part time at Mavrik.

yes this is on 91, unfortunately i don't have a egt gauge yet.

crazymike, these are all the printouts i got. Ed almost finished the tune when he realized he was on the small map for the maf. He bumped it up for the bigger maf and it through off a lot. He had to go back in and take out a lot of fuel in the midrange.
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Old 08-08-2007, 01:25 PM   #21
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Now my question is this.

Is he lifting early? Or is the dyno not reading right? By 6600 RPM your power levels are absolutely tanking, as is boost.

Now, is the 3.93 correction a percentage? If so sounds like you're making around 250AWHP on an uncorrected dyno. Might be a touch low, but on 91 octane it certainly isn't unthinkable.

Other then that, looks good!

If he's dialing in fuel up top, and it's not enrichening consider the pump, regulator, or pump controller.

Yes, I know you have an aftermarket pump, but believe me, it wouldn't be the first time I've had a similar situation with a "walbro", to swap it, and all of the sudden flood the fuel mixture because I had been over compensating it in vain.

Looks great!

Jorge (RiftsWRX)
www.ProjectWRX.com
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Old 08-08-2007, 02:16 PM   #22
Equilibrium Tuning
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That a/f combined with the boost creep is very scary on 91 octane. If you had an EGT gauge you'd see what I'm talking about. If the reported IDC's are increasing but fuel delivery is not, its most likely not a tuning issue but rather a mechanical one. Check your fuel pressure as its likely dropping at higher flow rates.

-- Ed
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Old 08-08-2007, 03:48 PM   #23
OCrex
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those are some good points guys, thanks. i've emailed Ed and we'll see what he says. i was also concerned about the boost and a/f. he said it's close so i shouldn't do any hard pulls up a hill but since the car is under less load on the road, it should be ok, just be careful.
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Old 08-10-2007, 03:26 AM   #24
luspeed
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Quote:
Originally Posted by OCrex View Post
those are some good points guys, thanks. i've emailed Ed and we'll see what he says. i was also concerned about the boost and a/f. he said it's close so i shouldn't do any hard pulls up a hill but since the car is under less load on the road, it should be ok, just be careful.
Nice numbers! I was wondering how they would turn out? You were like the 3rd car Ed was tuning that day and you had yet to get on the dyno when I left around 5:30pm. I knew you were in for a long night, but damn, 4:00am! You're lucky that Ed could still keep his eyes open to tune right I gotta say, this is a very low reading dyno guys. I was tuned earlier the same day as OCrex by Ed, but instead my set up is an 05 WRX with:

fp 18g 7cm
aps cold air intake (65mm)
spec c sti intake manifold
fujistubo equal length header
acpt carbon fiber drive shaft
exedy light weight flywheel
cobb 3" downpipe
aps uppipe
3" greddy evo 2 catback
pe 650cc injectors
jdm sti top mount
v6 sti ra gear set

My numbers on the dyno that day were 260whp/240wtq @ 20psi on 91 (piss poor) pump. I got tuned on the same dyno back in January and put down 237whp/208tq with an fp16g, stock intake manifold, stock exhaust header, and the rest of the mod list above. What's interesting is when I came in on Sunday Teddy at Mavrik explained that since my January tune, the dyno was recalibrated and now all whp numbers, including previous runs, would be showing a little lower. Sure enough when he pulled up my run from January, it was now only showed 224whp/199tq. So bascially I ended up with +36whp/41wtq. For reference when I got tuned back in January, a guy with a stage 2 06 sti w/perrin equal length header put down 241whp on that dyno.

For arguments sake we can say that a typical stage 2 sti on this dyno would be somewhere in the 230whp range right now. With OCrex putting down 340whp he's about a 110whp over a stage 2 sti. With the typical stage 2 sti showing about 280-290whp w/91 pump on an acurate reading dyno, I'd say OCrex is legitmately at 400whp right now. Not bad for Ed operating in red-eyed sleep deprived mode. Congrats again on the numbers dude, and be sure to get tgv deletes and a header. You will make more power for sure! Imagine what that set up would do on 100 octane?

Lu-

Btw, I noticed the numbers for rpm were slightly off on my graph. They were about 200rpm higher than they should have been which means the rpm settings on the dyno were slightly off. That might explain your power curve issue....
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Old 08-10-2007, 07:34 AM   #25
DJSuperSoul
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good numbers, i run a fpgreen 3" 8cm turbo / 800cc injectors, turboxs frontmount, and big maf on my sti, and put down 350/390 with this combo. this is at 19psi tapering as we near redline.
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