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Old 01-23-2011, 04:19 PM   #1
TopSpeed
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Default TopSpeed Motorsports - **2011 STI** Invidia Race Header Tested!!

Everyone at TopSpeed is happy to announce the purchase of our most recent project car, a brand new 2011 STI.

Over the years TopSpeed has strived to stay on the cutting edge of what Subaru is doing. Along with what the aftermarket community has to offer, and the public wants. In 2004 we purchased one of the first STIs in the state and haven't stopped since. Not stopping there we have continued our development through the years with our 2005 STi and 2007 Limited projects. Then again in 2008 when the new hatch was released, we jumped right in and purchased one. Many of you may have followed the build on our 08 STi. That car ran the Ultimate Track Car Challenge and was on the cover of Grass Roots Motorsports magazine.

Needless to say we were very excited when Subaru announced the return of the STI sedan in 2011! The wheels immediately started turning here as we all sat down and began our plan of attack for the newest project.

We plan to build this project a little different then we did in 2008 with the hatch. With the 08sti build we dove in immediately with a built motor, rotated 35R, Cosworth FMIC, big StopTech brakes, coilovers, and tons of chassis work. While that car was a lot of fun, reliable and wickedly fast on track, it may not have been the most beneficial build for the community as a whole.

That being said we plan to develop our 2011 STi a little differently. We want to maximize the impact/help that this car can be to the community. While big turbos and huge brakes are cool we don't find that to be the mod path of 90% of our Subaru customers. We will focus the beginning of this build to help the majority of the Subaru community buy trying to extract the most bang for the buck.

Here are some pictures of the car as received 3 days ago with 3 miles on it.


Check back for updates regularly.








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Last edited by TopSpeed; 02-23-2011 at 09:50 AM.
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Old 01-23-2011, 07:54 PM   #2
team23jordan
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Agreed. Cant wait to see the progress on u guys' sti!
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Old 01-23-2011, 11:55 PM   #3
Gallo2011
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Very nice, Cicio! That's actually the first black STi I've seen on the forum. Can't wait to see what you do with it, performance-wise and asthetically.
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Old 01-24-2011, 11:47 AM   #4
92SEric240sx
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The 2011s look mean
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Old 02-01-2011, 04:28 AM   #5
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i beeb dying to see a black one get modded up this should get interesting
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Old 02-08-2011, 02:28 AM   #6
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will be paying attention to this thread...
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Old 02-08-2011, 08:53 AM   #7
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So Doug, what's first thing on the to-do list? any timeline? Also what mods are you guys planning to do in respects to keeping it mild?

TBE? intake? exhaust manifold?...tune is a given and I'm guessing an AP like every other shop.
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Old 02-08-2011, 10:57 AM   #8
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The first round of mods will be some exhaust testing. Header, DP, CBE, UpPipe....we want to see what the bottle necks are, as well as see how the car responds to different header options.

Parts are on order to start testing, we will update you guys as soon as they get here.

~Cicio
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Old 02-08-2011, 11:06 AM   #9
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Quote:
Originally Posted by TopSpeed View Post
The first round of mods will be some exhaust testing. Header, DP, CBE, UpPipe....we want to see what the bottle necks are, as well as see how the car responds to different header options.

Parts are on order to start testing, we will update you guys as soon as they get here.

~Cicio
What exhaust system do you plan to use? Will you be using the Cobb tuning system or open source?
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Old 02-08-2011, 05:39 PM   #10
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We will be using Cobb AP for the tuning.

The exhaust system is a sponsorship, and I can't reveal that quite yet.
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Old 02-19-2011, 07:01 PM   #11
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Any updates Cicio? Hope everything is going well there.
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Old 02-19-2011, 07:43 PM   #12
mARCSBuG
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Is this finished yet
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Old 02-19-2011, 08:11 PM   #13
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Forged Performance is really kicking your guys butt's with the 2011 STi. I mean I could've just uploaded a couple stock pics of one like you guys did. Definite FAIL for a build thread.
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Old 02-20-2011, 02:36 PM   #14
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forged performance is slacking too i have been beggin for pics for weeks now
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Old 02-20-2011, 08:31 PM   #15
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Wish TopSpeed could get a shop here in texas, my car has been tuned by you guys by the previos owner multiple times and i can say Doug does some mighty fine tuning. Cant wait to see how this project car comes along.
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Old 02-22-2011, 05:10 PM   #16
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Old 02-23-2011, 08:50 AM   #17
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Quote:
Originally Posted by EOD814 View Post
Forged Performance is really kicking your guys butt's with the 2011 STi. I mean I could've just uploaded a couple stock pics of one like you guys did. Definite FAIL for a build thread.

I would hardly say that. Only 480 hp on a HUGE turbo with e85? *edit* Apparently Forged ran out of fuel pump.

And Topspeed isn't looking to go huge power on this car....they've already proven they can do it and do it reliably. Topspeed is building this car with the average consumer in mind......the average consumer doesn't go rotated.

Last edited by GT35RHybrid; 02-23-2011 at 02:20 PM.
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Old 02-23-2011, 09:17 AM   #18
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Hey guys, we have been crazy slammed here at the shop so we have been trying to spend the late night hours working on this project. Here is the first test, I have one more I am working on I should have posted later this week. Also weather permitting we will be at the drag strip this saturday for some stock turbo quarter mile numbers.

Doug



This will be the first of many tests to come...

For this test we will installing and testing the new Invidia EL Race header, and uppipe. This is the latest Invidia design using larger primary runner diameters in an equal length package. It also has yet to be tested back to back so we figured this would be a good first test to share with the community.




In an attempt to make this an accurate comparison we wanted to be sure to maximize the potential of the car before and after the install, as well as do same day testing. For this test the TopSpeed 2011 sti was baselined with a full Invidia turbo back system using a catted downpipe. Once the baseline dyno tune was completed and the car mapped for the parts already installed we moved the car onto the lift for the header and uppipe install.





Prior to installing headers or uppipes we prefer to wrap them in heat wrap. From years of testing we have found that heat wrap plays a major role in subaru's. It helps keep the IAT's down, as well as increasing spool and power delivery. If you have the chance to wrap your headers and uppipe do it as there really isn't a drawback in doing so.



Installing both the header and uppipe were straight forward and we give them a TopSpeed fitment of A++. Everything lined up perfectly... as expected since we chose to use all exhaust pieces from one manufacture and not mix match pieces. Included were all bolts and gaskets needed, we chose to run factory gasket on the heads instead of the supplied ones in the kit.




Now the part everyone wants to see.... the dyno graphs and data:naughty:.

Run#14 is with the header, uppipe, TBE and custom tune
Run#09 is just the TBE and custom tune



It is quite obvious that the header and uppipe allow the car to make more power from the above before and after dynograph. What isn't so obvious is with the new header and uppipe the car actually made less boost for most of the dyno pull. This is because of many different factors. Mostly though it can be summed up that the header and uppipe have made the engine a more efficient air pump and the stock VF turbo is not able maintain the CFM required. Even still less boost doesn't mean this is a bad header. Because now we are able to run more timing on pumpgas safely because of the drop of exhaust density and egt's

Here are the boost plots and timing plots from both runs so you can see the differences. Notice on the boost plot it is down about 1psi from 4k up, yet we am able to run 3deg more timing through most of the rpm range.


Boost Plot


Ignition Timing


At the end of the day we think this is an amazing header. Anything that allows the motor to breath better and make more SAFE power gets a TopSpeed thumbs up.

We will also do this test again when we upgrade the turbo as we expect the gains with that test to be even better.

We will be stocking these so if interested give us a call..

Thanks,

TopSpeed Motorsports
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Old 02-23-2011, 09:20 AM   #19
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Quote:
Originally Posted by GT35RHybrid View Post
I would hardly say that. Only 480 hp on a HUGE turbo with e85? Pathetic on Forged's end.

And Topspeed isn't looking to go huge power on this car....they've already proven they can do it and do it reliably. Topspeed is building this car with the average consumer in mind......the average consumer doesn't go rotated.
Correct, we have been down the high hp road. For this project we want to maximize the potential of every setup and show the results to the community before moving on to the next. First round of mods will be what it takes to run 11's on the stock VF turbo. Then we will move up to a larger stock location turbo, then rotated. In all our setups we want to keep this car daily driver friendly, meaning quick spool and nice driving manners.

Doug
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Old 02-23-2011, 09:29 AM   #20
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Doug am i seeing that timing right? 25* up top?
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Old 02-23-2011, 09:44 AM   #21
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Correct

Doug
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Old 02-23-2011, 10:04 AM   #22
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Quote:
Originally Posted by GT35RHybrid View Post
I would hardly say that. Only 480 hp on a HUGE turbo with e85? Pathetic on Forged's end.

And Topspeed isn't looking to go huge power on this car....they've already proven they can do it and do it reliably. Topspeed is building this car with the average consumer in mind......the average consumer doesn't go rotated.
You must not know the whole story either then for Forged...Lets not bash one shop or the other because they are in it to make money from customers, not throw project cars together for people on a forum so customers come first...

Forged is running VERY conservative right now because they are still on the stock engine, they are waiting to install a fully built block, they were shooting for 600+hp from what I remember hearing, but NOT on a stock engine!

Plus...its Sharif's DD
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Old 02-23-2011, 10:25 AM   #23
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Another quick update:

We wrapped the stock airbox in motorsports gold foil wrap to help keep the air box cooler and AIT's down. Also while we were at it we built a custom catch can system to keep the air entering the motor as clean as possible. The catch can uses -10 an fittings to ensure it has plenty of flow.





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Old 02-23-2011, 08:51 PM   #24
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Quote:
Originally Posted by TopSpeed
Correct

Doug
she likes it huh
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Old 02-23-2011, 09:49 PM   #25
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Sure does... I have been beating the snot out of her to make sure the maps is spot on.
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