Dyno Tune: EJ207 + Holset HX35 makes 398whp

[Kotir]

Event: Dyno Pull
Location: English Racing, Vancouver WA
Ambient Temp: 60F
Elevation: 171 FT
Weather: Overcast
Track and Conditions: N/A
Tires: 255/45-17 Champiros

Car: 1993, Impreza L
Tuner:
Dyno Info: Dynojet
Transmission: 2005 USDM STi 6spd
Gear: 3rd
Peak HP at RPM: 398 Uncorrected
Peak Torque at RPM: 330 Uncorrected
Baseline hp/tq for a stock on same dyno: 240-250whp STi
Target Boost: 25psi
Target AFR: 11:1 ish
Fuel: 92
Engine/Power Modifications: 2003 JDM STi Ver8 Engine swap, Stock twinscroll headers/uppipe, Custom VF to T3 twinscroll adapter/twin Tial 38 MV-S/downpipe/intake fabbed by Garage 808, Holset HX35W, ID1000 injectors, Dual in tank Walbros, 3" Titanium catback, Opensource

My logger was freaking out when I was at the dyno so didn't really get to tune it, so forgive the AFR wave Something I borked in the wiring I think. Also no E85 fun

I figured I'd still post up what it made since I've been working on this setup for awhile.



Most recent picture of engine bay that I have, since then cleaned up more and new cold air intake now:


I need to weight it again but it was around ~2,500lbs (without driver) last time I checked. All my non-Subaru friends want me to put an intake manifold that actually has a plenum, probably something custom, we'll see if that happens before I go back

Car went 12.2 @ 116 with a 2.0 60' on 18psi on the stock VF37

Car doesn't feel nearly as laggy as it looks on the dyno, might try a 4th gear pull next time.

Hopefully get E85 tune, and get some drag results soon.

-Tim

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[Prevent]

very nice, i like the engine bay.

jealous of the 8k redline too

[project_skyline]

Very nice. Aaron over at English racing is a very good tuner.
That power looks like fun.

[bugeye1257]

glad to see another holset subie now tune it with e85 and turn the boost up to 30

[juanmedina]

do you have more pics? the front looks

[seanathanq83]

looks sick, have any pictures of the adapter you used to go from the twinscroll to t3?

[Kotir]

I will post more pictures of car/adapter when I'm back at a real computer.

On a side note redoing the intercooler piping with reverse manifold cut like 8 ft of piping verses the conventional setup I had before - the throttle/boost response is a lot better than mt old setup with the VF37/fmic/stock rotation manifold.

-Tim

[Homemade WRX]

sweet!! I wanna see more pics of the car

[treystoys]

Thats awesome man makes me think a bit more about bumping from 23 to 25psi on 93...hows the timing mid and top end?

Trey

[cribbie]

Great post!!!

[comtrang]

Hi, came across your thread on Google. Just wondering which version of the HX35 are you using, is it a 12cm^2 version straight off of a Ram or did you pick yours up elsewhere? When are you actually seeing full boost on the road?

[blakkboxer]

thaat's siiick!

i wana ej207!

[Fierysun]

Stock (no aftermarket pistons, rods, crank, and so on) block EJ207 v8?

[hauntedwrx]

Damn that is a nice looking car. Glad to see the results with a stock 207.

[akaGeneyus]

cant wait to get one of these motors in my car! nice results

[Paul]

Originally Posted by Kotir

I will post more pictures of car/adapter when I'm back at a real computer.

-Tim

please do...id like to see pics of how you have the wastegates setup too

[Kotir]

Originally Posted by comtrang

Hi, came across your thread on Google. Just wondering which version of the HX35 are you using, is it a 12cm^2 version straight off of a Ram or did you pick yours up elsewhere? When are you actually seeing full boost on the road?

It's is a HX35W of a I think 1997 Dodge Ram with the 12cm^2 hotside. I need to figure out how to get the logger working again, I got AVCS working again - so I think it should spool a bit quicker now too. I'll have to get back to you on that.

Originally Posted by Fierysun

Stock (no aftermarket pistons, rods, crank, and so on) block EJ207 v8?

Completely stock, never been opened, EJ207 Version 8 complete engine. It has almost 60k miles on it now, I believe it had maybe 5k when I first swapped it. The engine has survived two chassis' so far.

Originally Posted by Paul

please do...id like to see pics of how you have the wastegates setup too

The adapter is kind of hard to take pictures of the adapter, this is probably the best I have of it out of the car:


I was going to try to go out and get some better shots, but have been busy/lazy so here's some from in front of my house...







And my awesome stripped interior:


-Tim

[jibber]

Hahahah Tim that is Awesome! Quite a different car than you drove away!

Josh

[comtrang]

Originally Posted by Kotir

It's is a HX35W of a I think 1997 Dodge Ram with the 12cm^2 hotside. I need to figure out how to get the logger working again, I got AVCS working again - so I think it should spool a bit quicker now too. I'll have to get back to you on that.

I see - the reason why I ask is cause I also have a HX35 off of a '97 Ram on my 2.0 Saab and what I was looking up when I came across your thread is how quick others were getting these versions of the HX35 to spool. I'll do an overlay of my dyno sheet onto yours and post it up later so you can see, too - I think we're both seeing full boost at about the same time but just the shape is a little different. Will post that up a little later.

Your car looks great by the way, I know for sure that thing freakin' flies. It weighs 500lbs less than mine, and mine gets going pretty good

[Fierysun]

Originally Posted by Kotir

Completely stock, never been opened, EJ207 Version 8 complete engine. It has almost 60k miles on it now, I believe it had maybe 5k when I first swapped it. The engine has survived two chassis' so far.

Amazing...just looking at the 8,100 rpm redline makes me nervous.

How's the compression on all four cylinders?

[Kotir]

Definitely would like to see a comparison, is your setup twinscroll? I'm sure I can get mine spooling faster with more tuning and of course having AVCS working. Regardless, even with how the car was when it was dyno'd even my skeptic friends didn't think it was really laggy on the street.

-Tim

Originally Posted by comtrang

I see - the reason why I ask is cause I also have a HX35 off of a '97 Ram on my 2.0 Saab and what I was looking up when I came across your thread is how quick others were getting these versions of the HX35 to spool. I'll do an overlay of my dyno sheet onto yours and post it up later so you can see, too - I think we're both seeing full boost at about the same time but just the shape is a little different. Will post that up a little later.

[comtrang]

Didn't do a very good job of it, but I think its enough that you can see how our torque curves compare.

[comtrang]

Originally Posted by Kotir

Definitely would like to see a comparison, is your setup twinscroll? I'm sure I can get mine spooling faster with more tuning and of course having AVCS working. Regardless, even with how the car was when it was dyno'd even my skeptic friends didn't think it was really laggy on the street.

-Tim

Yep, twinscroll manifold fabricated in Finland where the Saab big boys play. I'm also in the same boat with the tune - during the initial tune my boost controller and stock 2.5bar MAP sensor were apparently bad and I still have yet to replace the MAP sensor. In addition to that, 18psi is as much as I can throw at it because that's as much fuel as the Walbro can handle. Timing was hardly touched in the tune, still a long way to go with it.

I don't think these turbos are laggy at all, they're huge! Considering you've got til 8k+ to play with, you've got plenty of powerband, too, unlike me.

[Kotir]

Got any pictures of your setup? Always curious to see what other people are doing - there's about a dozen Hondas around here with Holsets, my friend had a HX35 on his RB20DET swapped 240sx and I think my other friend is going about to put one on his built motor Evo. The custom setups people do with Holsets always interest me.

Are you running a full 4" intake since yours is speed density? Sort of curious how much power I'm throwing away tapering my intake to ~3" MAF.

-Tim

Originally Posted by comtrang

Yep, twinscroll manifold fabricated in Finland where the Saab big boys play. I'm also in the same boat with the tune - during the initial tune my boost controller and stock 2.5bar MAP sensor were apparently bad and I still have yet to replace the MAP sensor. In addition to that, 18psi is as much as I can throw at it because that's as much fuel as the Walbro can handle. Timing was hardly touched in the tune, still a long way to go with it.

I don't think these turbos are laggy at all, they're huge! Considering you've got til 8k+ to play with, you've got plenty of powerband, too, unlike me.

[comtrang]

Originally Posted by Kotir

Got any pictures of your setup? Always curious to see what other people are doing - there's about a dozen Hondas around here with Holsets, my friend had a HX35 on his RB20DET swapped 240sx and I think my other friend is going about to put one on his built motor Evo. The custom setups people do with Holsets always interest me.

Are you running a full 4" intake since yours is speed density? Sort of curious how much power I'm throwing away tapering my intake to ~3" MAF.

-Tim

Yeah I am, I've got a 4" rubber elbow coming right off the compressor and a couple others to get it where it needs to go.








And here's the rest of the setup if it helps. Stock internals, top and bottom. Thus the low rev limit.

Holset HX35 56mm turbocharger
Reindeer Performance Custom made twin scroll manifold
TiAL V44 External wastegate, .9bar spring
Siemens deka 845cc injectors
By me 3" downpipe v-band flanged, welded by Liquid & Powdercoat Finishes
By me 2.5" delivery pipe
JT 3" catback exhaust, catless
CXracing 22"x8"x3.5" front mount intercooler
Custom Stage 'Drew' tune
Bullet 14" universal slim fan
Russell -4AN oil lines
Walbro 255hp 341 fuel pump
Spec Stage 3 Clutch w/ Viggen Pressure Plate
Forge FMDV004 atmospheric dump valve
K&N cone filter, homemade 4" intake plumbing

AEM Wideband A/F ratio Gauge
AutoMeter Pyrometer
AutoMeter Sport Comp Boost Gauge
Equus Oil Pressure Gauge