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Old 07-17-2009, 04:59 PM   #1
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Default ATP stock location Turbochargers review and discussion

Rarely do I appreciate the aftermarket parts world, things almost never fit right, work as advertised, or perform the way you expect. For this reason I think we need to focus on the products that work, especially when they work well.

Recently I had the opportunity to do some testing of some ATP Turbochargers, both for our black 04 STi race car and Silver 04 STi Race Car also for a customer car, and the results are great. In saying that, I have been struggling finding a turbocharger that has "Perfect" street qualities to it, but with good spool and sustaining boost to redline. To us, the perfect "street" turbo is one that is "Bolt-in" and does not require a rotated setup, works with existing modifications, can work both with a TMIC or FMIC, and is built well. I can honestly say that ATP has hit the nail on the head with their stock fit location turbo's. What makes these amazing is the incredibly high flowing hot side, these larger hotsides help with both exhaust flow yet keep spool at a very reasonable RPM. In our testing, our black STi had dropped nearly 200* in EGT temperatures, although spool suffered a bit, the car made 395whp at 21psi in a class restricted setup. When we bumped the boost to 23psi for testing, the car jumped to 460whp on 100 Octane fuel with AFR's in the 10.9 - 11.0 Range. Keep in mind, the previous turbo (SR55) was struggling to make 400whp at 23psi, and when the car would hit 160mph in the back stretch at Pocono Long, the car would hit nearly 1900* for EGT's. Although I do not have any high load testing data yet, I can already see by the dyno data that this turbo is going to kill our previous turbocharger.

Finally, before we move on to the graphs, I want to make clear that we are in no way affiliated with ATP, and have only recently begun using their line on our race cars after we have seen some results from other vehicles. I invite any and all other results and comments to be posted so that people can get a good understanding of this line of products and their capabilities along with downfalls. For those interested in ATP's Subaru specific products, you can find them here: http://www.atpturbo.com/Merchant2/me...egory_Code=SUB

Dyno Graphs:

We have a few overlays that make things look really interesting. The three turbo's we have tested so far are the ATP GT3582R internally gated (ATP-SUB-005), and the ATP 3076 Externally gated housing with Tial 44mm Gate (ATP-SUB-006) and the ATP 3076 Internally gated (ATP-SUB-002). To be fair, we have only tested the 3582R and 3076 IWG on cars equipped with Cosworth 272 camshafts, so please keep that in mind.

For starters, we will start with the 3076 IWG. This turbo was tested on our Silver Race car, which has Cosworth 272's, a custom FMIC setup, stock displacement engine, Invidia EL header, and supporting modifications. Unfortunately, we only run 100 Octane in this car, so we do not have any pump gas data for this comparison, but we did run the 3076 EWG housing on pump gas, so the results should be very similar (test below this one).



Here is the power graph at, as you can see, it made 395 and 390 at 21.5psi.







(Red Line) ATP3076-IWG (100 Octane) @ 21.5psi vs. ATP3076-EWG @ 22.5psi







(Red Line) ATP3076-IWG (100 Octane) @ 21.5psi vs. ATPGT3582R-IWG @ 21psi








(Red Line) ATP3076-IWG (100 Octane) @ 21.5psi vs. ATPGT3582R-IWG @ 23psi




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Old 07-17-2009, 04:59 PM   #2
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(Red Line) ATP3076-IWG (100 Octane) @ 21.5psi vs. FP Green @ 22psi







(Red Line) ATP3076-IWG (100 Octane) @ 21.5psi vs. 7cm FP Green @ 24psi(Q16 Race Gas)








(Red Line) ATP3076-IWG (100 Octane) @ 21.5psi Vs. Blouch Dominator 3 (93 Octane) @ 24psi








(Red Line) ATP3076-IWG (100 Octane) @ 21.5psi Vs. Blouch Dominator 3 (93 Octane w/ Meth) @ 25psi



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Old 07-17-2009, 04:59 PM   #3
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(Red Line) ARP3076-IWG (100 Octane) @ 21.5psi Vs. Blouch Dominator 4 (93 Octane W/ Meth) @ 26psi



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Old 07-17-2009, 04:59 PM   #4
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Up next is an ATP 3076 equipped with the ATP Tial EWG housing with a Tial 44mm WG. This turbo, is by far, our favorite 30R stock location turbo by far. Spool was excellent, and power was linear and increasing all the way to redline. We will have more data on the turbo as we will be installing a Meth kit on this car within the month, higher boost numbers will posted soon.

This test was performed on an 07 STi, DW850cc, Perrin Front Mount Intercooler, TGV Deletes, Grimmspeed cross pipe, Invidia catless Downpipe, Invidia N1 Catback, KN Intake, Forged BOV, 93 Octane. Comparison cars all have similar supporting mods.



ATP3076-EWG 375whp and 354wtq @ 22.5psi (93 Octane)









(Red Line) ATP3076-EWG @ 22.5psi (93 Octane) vs. FP Green @ 22psi(93 Octane)









(Red Line) ATP3076-EWG @ 22.5psi (93 Octane) vs. Blouch Dominator 3 @ 24psi (93 Octane)




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Old 07-17-2009, 05:00 PM   #5
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(Red Line) ATP3076-EWG @ 22.5psi (93 Octane) vs. Garrett 30r .82 Rotated Kit @ 21psi (93 Octane)




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Old 07-17-2009, 05:00 PM   #6
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Finally, the ATP GT3582R IWG. This turbo is the biggest stock location turbo offered by ATP. Overall, this turbo is really nice, spool is not bad considering the size, although this test was done on our race car which has a dog box with a shorter gear ratio. If this test was performed on an 07-08 STi, boost would come in sooner and hang longer. The turbo itself makes incredible power considering the boost levels we ran it at, and with a solid engine, this combination could easily achieve 500+whp.



ATPGT3582R-IWG 397whp and 389wtq @ 21.5psi forcing a taper to 19.5 (100 Octane)







ATPGT3582R-IWG 460whp and 423wtq @ 23psi(100 Octane)







(Red Line) ATPGT3582R-IWG @ 23psi (100 Octane) vs. 7cm FP Green @ 24psi(Q16 Race Gas)








(Red Line) ATPGT3582R-IWG @ 23psi (100 Octane) vs. Blouch Dominator 4 @ 26psi (93 Octane w/ Meth)



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Old 07-17-2009, 05:00 PM   #7
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(Red Line) ATPGT3582R-IWG @ 23psi (100 Octane) vs. FP RED w/ Tial 44mm EWG @ 26psi (93 Octane w/ Meth)









(Red Line) ATPGT3582R-IWG @ 23psi (100 Octane) vs. Ultimate Racing 35r .86 Rotated Kit @ 27psi (93 Octane w/ 50/50 Meth)







As you can see, the point is that these turbo's can make great power at lower boost levels. We will continue to test them as we move along, and hope that enthusiasts can take the information we have posted and use it to better purchase a turbo that may suite their needs perfectly.

Take Care,

Chris

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Old 07-17-2009, 05:00 PM   #8
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*reserved*
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Old 07-17-2009, 05:06 PM   #9
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Nice write up! Never seen a comparison of a 30R stock location to a Rotated 30R. Especially on a mustang dyno. Good job EFI!!
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Old 07-17-2009, 05:27 PM   #10
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So all the comparisons to other turbos are your 272 cammed race car vs stock cammed cars?
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Old 07-17-2009, 05:50 PM   #11
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Quote:
Originally Posted by Phatron View Post
So all the comparisons to other turbos are your 272 cammed race car vs stock cammed cars?
For the most part, this is correct, which is why we stated that. We understand that this makes things a little "different" than most stock cammed cars, but there is a variety of setups that can make the information in our post viable for some.

The ATP 3076 w/ Tial 44mm does have stock cams, so this may be good car to compare other turbo's too. You can feel free to take that run, and overlay it to any other run in our database to see how it fares to any other combination: http://efilogics.com/dyno/index.php?...&torque=1&gb=0

Again, we are starting this thread for others to post their results as well, so please keep that in mind.

Thanks,
Chris
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Old 07-17-2009, 07:52 PM   #12
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nice Chris! I've been loving the ATP bolt-ons for a while and have a 3076 waiting to go in my daily driven 06 STI

-- Ed
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Old 07-17-2009, 09:03 PM   #13
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I'm more curious how these compare to the Blouch units. Isn't that a closer comparison?
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Old 07-17-2009, 09:18 PM   #14
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Do you think this turbo "could" be available as an oil cooled unit only?
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Old 07-17-2009, 09:25 PM   #15
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I've been running the ATP35R EWG for some time now and it is a great bolt on turbo and certainly does make over 500whp - I'll need to dig up my dyno charts... This turbo mated with the Full-Race 1.5 scroll manifold/up-pipe has been lots of fun but now I'm moving on to my next setup, Full-Race twin scroll 40R, boost is addictive

Last edited by PPhilthy; 07-17-2009 at 09:48 PM.
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Old 07-17-2009, 09:58 PM   #16
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wow thats good stuff. i just swapped out my ej20 with a forged sti block, put an atp 3076 on with bc 272 cams. just got it runnung at 3pm today. ive got a lot of tunning to do, but it looks like i picked a good turbo.
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Old 07-17-2009, 11:40 PM   #17
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Quote:
Originally Posted by subarulz! View Post
I'm more curious how these compare to the Blouch units. Isn't that a closer comparison?
There are several graphs above that have the comparison you are looking for... Search for Blouch in the thread.

- Chris
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Old 07-17-2009, 11:41 PM   #18
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Quote:
Originally Posted by JSarv View Post
Do you think this turbo "could" be available as an oil cooled unit only?
just dont hook the coolant lines up
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Old 07-18-2009, 01:57 AM   #19
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Quote:
Originally Posted by EFI Logics View Post
There are several graphs above that have the comparison you are looking for... Search for Blouch in the thread.

- Chris
Sorry. I thought your second and third posts were just the first post quoted by someone a couple times and never bothered to read past the first one. I see it now. Thanks.
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Old 07-18-2009, 04:27 PM   #20
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Quote:
Originally Posted by Vaus View Post
nice Chris! I've been loving the ATP bolt-ons for a while and have a 3076 waiting to go in my daily driven 06 STI

-- Ed
I'm really tempted to run the 3076 EWG in my 08 Spec.B and route the dump back into the DP, but that may be a winter project.

I'm glad you like these as much as we do, they are phenomenal.

- Chris
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Old 07-18-2009, 05:34 PM   #21
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I got the 3076 EWG on my 2.5L hybrid with heads and cams. Lots of fun but I too may think about re-routing the dump tube back into the DP. I didn't realize how loud that thing would be.
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Old 07-18-2009, 08:15 PM   #22
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Quote:
Originally Posted by EFI Logics View Post
I'm really tempted to run the 3076 EWG in my 08 Spec.B and route the dump back into the DP, but that may be a winter project.

I'm glad you like these as much as we do, they are phenomenal.

- Chris
We have 5 customer cars running the GT35's and a handful with GT3071's and GT3076's. They're just great turbos all around.

I'm going to try to run my 3076 with the IWG and on a TMIC. I'm not too sure how well it'll work, but we'll see. I may end up adding meth injection to help the TMIC out a bit.

I'd consider running the EWG housing but I don't think its a great idea with a TMIC unless you build a nice custom heat shield.

Thanks
-- Ed
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Old 07-19-2009, 01:19 PM   #23
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Great thread, I've been looking for some nice comparisons with the atp3076r. Does anyone have any data for the 3076 iwg on a 2.0l? It has been hard finding any info for these on a 2liter and any data would be greatly appreciated
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Old 07-20-2009, 10:44 AM   #24
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Just an update, our silver STi, equipped with the 3076-IWG, shattered the ST-2 class record on Sunday, and ran nearly 2 seconds faster then it's previous time out with the SR55. This is our first time testing this turbo at Pocono, and it has just proven itself perfectly.

To add to the good news, overall EGT's in all four cylinders were, on average, 200* cooler at the top of the super speedway at speeds over 160mph, this increased consistency and overall performance.. Simply put, the 3076 is phenomenal.

We will post more data over time.

- EFI
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Old 07-20-2009, 11:21 AM   #25
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damn, i debated on doing this vs my rotated kit but still think i made the right choice. I cant wait to see what chris can do with my car on the dyno next month.
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