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9900rpm's 2015 ISM STI
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Old 06-13-14, 08:29 PM   #1
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Default 9900rpm's 2015 ISM STI

Reserved for index.

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Old 06-13-14, 08:29 PM   #2
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Default Re: 9900rpm's 2015 ISM STI

Should have started this some time ago, but haven't had the time to type everything. Going to backtrack and fill in as much info as I have/remember. I did document a lot of it, so this "should" work. Please be patient with me, as I may be doing some back and forth/edits. Will do index page once I have some content in here.

Had a few Subaru STI's, with this one being my latest one. Picked this one up on April 11th, 2015. Car is a 2015 Subaru STI, base model, ISM, w/HK/nav/PBS/STS and Kicker powered sub. The car also included some accessories. They were the all weather floormats, all weather trunk mat, the body colored door side moulding things, and the auto dimming mirror w/compass.

Here's some pics of the car the night I picked it up. 7 miles on the clock. Not the greatest pics.




Last edited by 9900rpm; 06-16-14 at 10:21 AM.
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Old 06-13-14, 08:50 PM   #3
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Picked up the car on a Friday night. First round of mods happened on the following Monday (4/14/14); which was only about 2.5 days of ownership. Changed the oil with Rotella T6 before anything, at 470 miles. I went stage 1 on EcuTek Racerom. I have been following the progress of EcuTek, and really like their adjustable launch control (with crise control buttons), as well as rally style flat foot shifting. Visconti Tuning did the tune on the car, at M.R. Performance. Tuned on the dyno. Baselined 279/255 (there was a timing spike at redline, which explains the high hp). Left that there day on stage one with 293/325. I was surprised and happy. Car felt pretty good.





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Last edited by 9900rpm; 06-16-14 at 06:30 AM.
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Old 06-13-14, 09:51 PM   #4
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Default Re: 9900rpm's 2015 ISM STI

Sub'ed!

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Old 06-14-14, 05:40 AM   #5
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Default Re: Re: 9900rpm's 2015 ISM STI

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Originally Posted by J3ff_2015_Ray View Post
Sub'ed!

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+1

love this build with the E85 tune.

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Old 06-15-14, 10:05 PM   #6
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4/18/14. Went back in for round 2! Stage 1 was fun, but I wanted more power. Installed AEM CAI, Invidia catless downpipe and Invidia Q300 catback exhaust with the burnt tips. All of the abpve parts were for the GR bodystyle STI. Everything fit with minor adjustment. The exhaust physically fits, but 1 hanger doesn't reach, which isn't an issue. Also, to line up the exhaust tips/center them, took a while. Also, the front side of the muffler cans touches the rear bumper's inner fender plastic thing. You can either trim out about 1/8th to 1/4" on each side, or be like me and just leave it. The mufflers barely touches. I just left mine. It seems fine. No rattles or anything, and no rubbing.The AEM CAI's heat shield thing needed one hole drilled for one of the mounting points, and also the flat/creased part needed to be bent outwards slightly, to accommodate the 2015's slightly different frame rails. Not a big deal at all.

So stage 2 in this car made 309whp/340ish tq (forgot actual numbers). With the catback installed, it made 319whp/355tq. The car is a lot of fun at this power level.

Below are some pics from that day, including dyno graph, with stock, stage 1 and stage 2, overlayed.













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9900rpm's 2015 ISM STI-sti6-jpg   9900rpm's 2015 ISM STI-sti7-jpg   9900rpm's 2015 ISM STI-sti8-jpg   9900rpm's 2015 ISM STI-sti9-jpg   9900rpm's 2015 ISM STI-stia10-jpg  

9900rpm's 2015 ISM STI-stia11-jpg   9900rpm's 2015 ISM STI-stia12-jpg  

Last edited by 9900rpm; 06-16-14 at 06:33 AM.
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Old 06-16-14, 12:22 AM   #7
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Default Re: 9900rpm's 2015 ISM STI

What did you make again on Flex fuel? Are you or have you experienced Boost Creep issues? Have you put on an EBCS?
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Old 06-16-14, 06:41 AM   #8
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Default Re: 9900rpm's 2015 ISM STI

Milestone moment. 1000 miles. "Broken in", whatever that means. This was a week or 2 after being at stage 2. Daily drive this thing, and I park on the street at work in NYC.



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Old 06-16-14, 07:13 AM   #9
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Default Re: 9900rpm's 2015 ISM STI

FlexFuel.

This is when things got interesting. End of April, I decided to go flexfuel. Spoke to Visconti, and he told me Ecutek Racerom supports true flexfuel. It did need some hardware. Visconti Tuning sells a flexfuel kit to be used with Ecutek Racerom. It's pretty much a plug n play kit that includes an ethanol content gauge, sensor, a controller box and some wiring harnesses. The install was very straightforward and simple. Didn't have to hack into anything. On top of this, the car needed bigger injectors and bigger fuel pump. I went with FIC 900cc injectors and DW65C fuel pump. Injector install kinda sucks, because one of the fuel rail metal brackets blocks a bolt that needs to come off to remove fuel rails, and to undo this bracket, the intake manifold has to come off. When we did ours, we loosened the intake manifold and just lifted it up a bit, without taking it off. The fuel pump install gets messy, but here are a few things you need to know. It can probably be a 1 man job, but you will be glad to have a second set of hands at your disposal. I found it much easier to take out the center sections with a friend holding the housing apart with flathead screwdrivers. You will know what I mean when you get there. Also, do this install with little to no gas in your tank. By little, I mean like 1/16th, or down to the very last line on your gauge, with your gas light on. The fuel pump housing has a bucket thing that holds fuel, and this whole assembly sits in gas. It can get very ugly very fast if you try this with even 1/4-1/3 tank of gas. I can see it spilling from the top as you remove the housing. Also, remember to use TWO o-rings on the fuel pump. It needs this to seal. DW does include 2 of them. You will lose fuel pressure if you don't.

The Ecutek/Visconti Tuning flexfuel setup is awesome, in the way that you can put in pump gas, E85, or any mixture in between, and the car will know what to do with it. It has multiple maps, and knows what to do with what's in the tank. No more switching maps manually, or worrying about the ethanol content is in the E85 you get, or the type of mixture of gas/ethanol you have going on in the tank.

The car picked up somewhere around peak 37whp and 43tq at the same 20psi of boost. The torque is what you can really feel. Peak power is nice, and what people all drool over, but it's the power under the curve that you feel. The turbo spools faster, and when it hits, it hits much harder than when on pump gas. If E85 is attainable in your area, I recommend you go and do it. It is also safer for your motor, as ethanol has cooling effects which helps keep the motor happy.

So far, parts on the car include:
EcuTek Racerom
AEM CAI
Invidia catless downpope
Invidia Q300 with burnt tips
Visconti Tuning flexfuel kit
DW65C pump
FIC 900cc injectors
Everything else is stock

I tried to upload a dyno video, but this site won't take .mov format, and I'm computer stupid. I do have vids posted on my Instagram account, @9900rpm.







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9900rpm's 2015 ISM STI-stia15-jpg   9900rpm's 2015 ISM STI-stia16-jpg   9900rpm's 2015 ISM STI-stia17-jpg   9900rpm's 2015 ISM STI-stia18-jpg  

Last edited by 9900rpm; 06-16-14 at 07:18 AM.
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Old 06-16-14, 07:15 AM   #10
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Default Re: 9900rpm's 2015 ISM STI

Quote:
Originally Posted by Boxer112 View Post
What did you make again on Flex fuel? Are you or have you experienced Boost Creep issues? Have you put on an EBCS?
Made 356/398 on E85 (I believe that was with only 75% ethanol content). No boost creep issues. I run the Invidia catless downpipe/Q300 exhaust, and I believe the downpipe has the bellmouth top with a divider thing inside it for the wastegate hole. It works. Boost is rock solid. This little stock turbo probably won't creep anyway. It can't keep up upstairs. Running stock EBCS.
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