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Old 10-18-2012, 11:51 AM   #1
be0tch
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FP HTA Green Turbo

Default Dyno tune: 2005 STi 2.5L + FP HTA Green makes 350whp (EWG comparison)

SEE THIS POST FOR BUILT MOTOR UPDATE: http://forums.nasioc.com/forums/show...0&postcount=47

Event: dyno pull
Location: Performance Auto Solutions (Deer Park, NY)
Ambient Temp: 60 degrees F
Elevation: At sea level.
Weather: unremarkable autumn day/evening. dry.
Tires: Hankook Ventus V12 Evo - 225/45/17

Car: 2005 STi
Tuner: Dave Brown - Performance Auto Solutions
Dyno Info: Mustang
Transmission: 6spd stock gearset
Gear: 4th
Peak HP at RPM: 350whp @ 6200
Peak Torque at RPM: 346 lb-ft @ 3800
Baseline hp/tq for a stock on same dyno: ~210 for STi 2.5L
Target Boost: unknown
Target AFR: unknown
Fuel: 93 octane unleaded pump gas
Engine/Power Modifications: FP HTA Green Turbo, 1100cc injectors, Process West top mount intercooler, TGV deletes, top feed conversion, fuel pressure regulator, 300lph fuel pump, turboxs catless downpipe, high flow midpipe, OEM STi catback, aftermarket EWG uppipe. 73mm KStech intake. Perrin 3" turbo inlet. Perrin fuel rails. Grimmspeed EBCS. 38mm tial wastegate venting to atmosphere. Cobb AP, stock engine internals. Apologies if I forgot anything but I think that's it.
Driveline Modifications: Grimmspeed Pulley.
Suspension Modifications: none.
Other Modifications: full interior and large subwoofer box in trunk.

The first pull (described above) is with the wastegate venting to atmosphere:



Same deal and substantially the same conditions but a couple of days later. This time with the wastegate plumbed back into the downpipe (no boost plot on this second one):



I left it with the wastegate plumbed into the down pipe for noise concerns.

SEE THIS POST FOR UPDATE: http://forums.nasioc.com/forums/show...9&postcount=25
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Last edited by be0tch; 11-11-2013 at 04:07 PM.
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Old 10-18-2012, 08:09 PM   #2
Slimsti
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Nice realistic numbers. Most hta greens on here make like 450-500 and its just ridiculous. It must feel great on the street. The hta has the spool of the old green but with superior top end. How do u like it?
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Old 10-18-2012, 10:09 PM   #3
be0tch
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It's great on the street, if maybe too fast to fully enjoy. I've got some stuff left to do and then hopefully I can get it on a closed course to really unleash the boost.
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Old 10-18-2012, 11:13 PM   #4
07wrxstage2
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Great numbers! Im curious though as to why you left the stock catback on instead of an aftermarket exhaust of some kind. Maybe would of only added another 5hp but wouldn't it of been a lot less restrictive when spooling.

Last edited by 07wrxstage2; 10-19-2012 at 12:30 AM.
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Old 10-19-2012, 12:17 AM   #5
907Bum
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Good real numbers, looks like a good solid pull.
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Old 10-19-2012, 09:33 AM   #6
be0tch
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Quote:
Originally Posted by 07wrxstage2 View Post
Great numbers! Im curious though as to why you left the stock catback on instead of an aftermarket exhaust of some kind. Maybe would of only added another 5hp but wouldn't it of been a lot less restrictive when spooling.
I could be wrong about this, but I don't think the spool is too atypical for this type of turbo. The reason for keeping the stock catback (and for plumbing the EWG into the downpipe) is because of noise concerns. There simply isn't an aftermarket exhaust that is as quiet as stock. Here you cannot modify your exhaust, and you cannot even reach your hand out of the car without touching a police officer.

Moreover, and here's where I risk running into flame territory, at these power levels it probably isn't necessary to have a full 3" exhaust. I do think it would show mild torque gain across the powerband and probably a bit of HP at the low and high end as well though. Realistically 5-10hp/5-10wtq around.

This setup appears and sounds closer to stock than anything else I could put on while still using the larger turbo, while simultaneously leaving me room to upgrade to forged internals and giant pipes if I should choose to make bigger power.
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Old 10-19-2012, 09:52 AM   #7
xluben
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Looks good! Top end definitely looks stronger with the EWG dumped, but it's not a huge difference. Nice comparison.

At this power level, I have found that changing the cat back from stock makes basically no change at all.
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Old 10-25-2012, 07:52 PM   #8
be0tch
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Quote:
Originally Posted by xluben View Post
Looks good! Top end definitely looks stronger with the EWG dumped, but it's not a huge difference. Nice comparison.

At this power level, I have found that changing the cat back from stock makes basically no change at all.
Thanks! It was the only short term ewg vent to atmosphere vs reroute comparison I could find here. I coincidentally saw your very sick build. Nice work.
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Old 10-26-2012, 10:38 AM   #9
thisisntjared
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Quote:
Originally Posted by be0tch View Post
I could be wrong about this, but I don't think the spool is too atypical for this type of turbo. The reason for keeping the stock catback (and for plumbing the EWG into the downpipe) is because of noise concerns. There simply isn't an aftermarket exhaust that is as quiet as stock. Here you cannot modify your exhaust, and you cannot even reach your hand out of the car without touching a police officer.

Moreover, and here's where I risk running into flame territory, at these power levels it probably isn't necessary to have a full 3" exhaust. I do think it would show mild torque gain across the powerband and probably a bit of HP at the low and high end as well though. Realistically 5-10hp/5-10wtq around.

This setup appears and sounds closer to stock than anything else I could put on while still using the larger turbo, while simultaneously leaving me room to upgrade to forged internals and giant pipes if I should choose to make bigger power.
your goals and build and mine are actually quite similar. however i chose the 20gxt with iwg and still run the sti tmic, factory tgvs, and factory intake tract.

with the ewg it looks like your green reaches peak boost just like my 20gxt, which is awesome considering you are also keeping the factory catback! the big difference is you are going up to 21psi, but i am still at a modest 16psi. this really encourages me to get a tmic and push as hard as you are while maintaining the factory catback, however i will be trying to also keep the factory airbox and turbo inlet.

are you still on the factory clutch?
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Old 10-26-2012, 02:16 PM   #10
be0tch
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Still on the original factory clutch. Its been through approximately 7500 miles of stage 2 and ~200 miles of stage whatever you call this green turbo build, plus all my unmodified yet unreasonable driving before that (~40k mi).

edit: I was just checking out your thread at http://forums.nasioc.com/forums/show...php?p=38253798

We do have very similar goals/styles in mind with regard to this thing.

Last edited by be0tch; 10-26-2012 at 02:32 PM.
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Old 10-27-2012, 09:07 PM   #11
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nice! this is very encouraging! you have great results!!
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Old 11-01-2012, 04:21 PM   #12
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That's pretty impressive, and I was curious about the ewg comparison.
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Old 11-01-2012, 11:01 PM   #13
tja1618
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I'm building up my EJ205 with a forged bottom end and probably 272 profile cams, and I wonder how well this turbo will spool.

FP just put it on sale.
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Old 01-13-2013, 11:35 AM   #14
FRWRX
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bump...

Last edited by FRWRX; 01-13-2013 at 11:47 AM.
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Old 01-13-2013, 11:56 AM   #15
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Interesting comparison. I wonder if an aftermarket CB would have made a difference when plumbed back?

How far from the turbine outlet was the WG dumped back in?
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Old 01-13-2013, 01:39 PM   #16
be0tch
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Quote:
Originally Posted by KurtP View Post
Interesting comparison. I wonder if an aftermarket CB would have made a difference when plumbed back?

How far from the turbine outlet was the WG dumped back in?
If I get the chance I'll snap a picture to show you the orientation of the plumbing. I sort of had that catback theory also - I think the stock catback might pose a restriction with the sudden rush of high pressure gas. It is also entirely possible that the angle and/or the turbulence in the exhaust flow created by the injection of the gas into the downpipe is causing a loss of high end power.

My headers, catback exhaust and possibly a meth kit are going on in Feb so I'll have a fresh dyno sheet to post here in the near future.

Last edited by be0tch; 01-13-2013 at 01:51 PM.
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Old 01-22-2013, 04:29 PM   #17
be0tch
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Quote:
Originally Posted by KurtP View Post
How far from the turbine outlet was the WG dumped back in?
Here's a picture of the tubing routed into the dp.



It isn't pretty but it isn't leaking yet either.
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Old 01-22-2013, 04:36 PM   #18
MMY MSL
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What hotside does this turbo have? 8cm?
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Old 01-22-2013, 04:55 PM   #19
be0tch
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8cm hotside, that is correct.
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Old 02-23-2013, 05:35 PM   #20
baisesti
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Peak torque at 3800rpm???

my FP Green HTA only give me peak torque at 4800rpm. Am running APS top mount, 3" downpipe, 3" turbo inlet hose.

Any idea how to obtain peak torque earlier???
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Old 02-23-2013, 05:43 PM   #21
Paul
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Maybe its a dyno difference of loading the car. Were you tuned on a mustang also?
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Old 02-24-2013, 05:25 PM   #22
be0tch
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I got some parts installed and was tuned over the weekend to 408/450 with headers and meth at 24psi. My clutch then started to slip.

I'm detuned temporarily to 22psi and 365whp. I'll have some sheets and a video of the updated condition of the car on Tuesday.
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Old 02-24-2013, 05:38 PM   #23
CT26SupraTurbo
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What kind of spar plugs are you running?
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Old 02-24-2013, 08:03 PM   #24
be0tch
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Oem plugs, recently changed.
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Old 02-26-2013, 03:34 PM   #25
be0tch
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I brought you fellas some more dyno sheets. Since the last tune, a maddad whisper dual 3.5" catback exhaust was added, as well as ceramic coated invidia headers (swaintech white lightning coat) and a 2 step 50/50 meth injection system from snow performance. The MAF was removed and a full speed density setup was installed and tuned.

low boost 93 pump:


high boost 93 pump:


93 + 50/50 meth, clutch starts to fail:


A dyno video:


There was a pull at higher psi that briefly made more torque/hp but the clutch was slipping even worse and it was aborted. I'm buying a new clutch asap and hope to have some firmer results.

Last edited by be0tch; 02-27-2013 at 11:02 AM.
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