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Old 05-17-2019, 10:00 AM   #176
Turpid Porpoise
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Join Date: Oct 2017
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2008 Impreza WRX STi
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Quote:
Originally Posted by RicersWetDream View Post
Yeah, scoopless hood would be great. I wish he was making these parts when I did my seibon hood. His is quite a bit more but is 15 pounds less since it's a full CF piece.
After dealing with a few Seibon-equal carbon hoods I will always spend the extra coin for a high quality carbon fiber piece. I have carbon hoods and fenders on my C5 from Carbon Creationz and the fitment is about what I've come to expect when I don't go for the top of the line pieces.
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Old 05-30-2019, 08:28 AM   #177
RicersWetDream
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Location: Marshall, MI
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2009 WRX
2014 Forester XT

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Some better pics added to post #2, 2019 yearly progress pictures.


Potential 2020 Projects:

CF Front Doors & Hatch from MPH, Lexan Side and Rear Windows

OR

Tubular Subframes F & R from TSS Fab
KW Variant 1 or RCE SuperStreet Coilovers
Rear LCA's and Front Control Arms from Racer X
STM Drag Brakes F & R
Rota Slips 15x7 w/ Hoosier DR2's in 235/60/15

I need to stoke interest in GR front doors, he'd like three people to commit to putting down $500 deposits and he'll commit to making GR front doors. With more CF parts and gutting the rear doors I believe I can save close to 200 pounds. The suspension/brake phase would save about 150 pounds, 82 or so of it being rotating mass and 92 unsprung. Whichever project doesn't make the 2020 list will likely be completed in 2021. Ultimately I want to get this car in final configuration in terms of weight before I add power. I'd like to see how fast it'll go on the stock turbo, with a better driver and more aggressive tune I bet it would be a 10 second car but I'll shoot for 11.5 or quicker, maybe 117 mph.

If I go suspension and tire route, the tires are about 26" tall versus current 24.5". I'd only use them at the track, so I wouldn't always see the benefit of lighter setup, but the height will be way better gearing for the track. Here's how those tires will impact my gearing versus current.

Current Speed Per Gear @ 7k rpm:
1st - 35.79
2nd - 58.43
3rd - 85.72
4th - 114.29
5th - 134.32
6th - 171.43

Hoosier 26" @7k rpm:
1st - 38.29
2nd - 62.5
3rd - 91.7
4th - 122.26
5th - 143.69
6th - 183.39

Now, once I build the engine and rev it to 8k with the Hoosiers:

Hoosier 26" @8k rpm:
1st - 43.76
2nd - 71.42
3rd - 104.8
4th - 139.72
5th - 164.22
6th - 209.59

Basically the taller tires will keep me in 4th gear, in a better area of the power band with my current power levels. I'm currently riding the rev limiter at the end of the quarter with the short tires I'm currently running. 122 mph is pretty close to a 10 second trap speed, and once I raise the limiter to 8k with the better valve train I'll definitely be able to keep it in 4th since I don't see myself getting much faster than 135-140 in the quarter.

Last edited by RicersWetDream; 05-30-2019 at 08:51 AM.
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Old 05-30-2019, 09:00 AM   #178
Turpid Porpoise
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Quote:
Originally Posted by RicersWetDream View Post
I need to stoke interest in GR front doors, he'd like three people to commit to putting down $500 deposits and he'll commit to making GR front doors.
Any idea on what the total would be?
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Old 05-30-2019, 09:12 AM   #179
RicersWetDream
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2014 Forester XT

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Quote:
Originally Posted by Turpid Porpoise View Post
Any idea on what the total would be?
He said $3,000 for the pair of doors, full CF. Based on what his BRZ doors save and what the OEM doors were, I'd guess it's a 70-80 pound savings for the pair.

Not sure on hatch cost, but he is starting the mold on that soon so he said they'll be available in a few months. Based on $3k for the doors hatch will probably land around $1,500.
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Old 05-30-2019, 03:07 PM   #180
Scuby04STi
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LOL, I love figuring out the gearing/speed. But that extra thousand rpm helps a LOT!!! I currently am toping out in 4th at 129-130mph on my e-85 tune, thinking when I turn things up a bit I will need to hold that gear out even higher to avoid 5th gear.

Also I really like that you aren't doing the weight reduction and the power all at once, this will make it very interesting to watch the gains from each step.
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Old 05-30-2019, 03:37 PM   #181
RicersWetDream
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2014 Forester XT

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Quote:
Originally Posted by Scuby04STi View Post
LOL, I love figuring out the gearing/speed. But that extra thousand rpm helps a LOT!!! I currently am toping out in 4th at 129-130mph on my e-85 tune, thinking when I turn things up a bit I will need to hold that gear out even higher to avoid 5th gear.

Also I really like that you aren't doing the weight reduction and the power all at once, this will make it very interesting to watch the gains from each step.
You should see the calculator I built in Excel to try and quantify future quarter mile times based on ET/MPH changes from added power or weight reduction efforts.

The fact that the car will be 226ish pounds lighter than the 12.25 pass (w/o pass seat and harness, half tank), my calculator says 12.08 at 114. I only have a couple data points so as I get more runs in I can refine it with more data.

I'm guessing the tires themselves will make a big difference if I were to just pull the trigger on those.
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Old 07-27-2019, 09:10 AM   #182
RicersWetDream
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2014 Forester XT

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Mini project. Not sure if I'll see any benefit from it but hopefully it will clean up the aero on the front end.

Since there's really no need for the lower grille area with no AC I've decided to clean up the opening and then cover it with a sheet of 1/8" abs. I'll use some left over panel bond from the roof to bond it from the back side. I may cover with left over cf di-noc from the tube protectors.

ABS panel shows up today so it'll be done tonight.





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Old 07-27-2019, 01:09 PM   #183
RicersWetDream
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2014 Forester XT

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Panel showed up early in the day, so it's already curing out....





"Clamps"


I can pull clamps at 7, fully cured by tomorrow afternoon. Should have pics of the bumper fitted back up this evening. It's the same stuff I used for the roof panel so it'll be a solid bond, we'll see how 1/8" abs likes 115 mph... I figure it'll hold up since it's basically the same material and thickness as the bumper.
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Old 07-27-2019, 08:48 PM   #184
RicersWetDream
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2014 Forester XT

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Done.



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Old 09-06-2019, 08:48 AM   #185
RicersWetDream
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2014 Forester XT

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I'm starting to think I won't make it to the track this year... Work has been keeping me too busy.

I was doing some tuning on the car, working on boost control and raising it from about 20 psi to 22psi to see how it liked it. I also started adding more timing up top. I was running about 14.5 degrees at peak torque whereas most guys are running 18-ish. I've ramped it up to about 16.5 so far and will keep going as far as I see power gains.

I figure those changes plus 200 pounds off the car since my 12.25 pass should net a solid 11. Only ran into a random issue, the car started to run quite rich. Basically it seems to cruise at stoich but it was idling in the 12:1 range, and give it any gas and it dips into the 9-10:1 range and stumbles hard. I haven't had much time to diagnose, but there don't appear to be any air leaks (which typically would run lean at idle). I'm leaning towards the front O2 going out or a bad tank of E. This happened right after a fill up and seemed to get a bit better after I topped that tank off (from half). I'm curious if I drive around for a while and have to fill up again if it'll resolve it. If not, I guess I'll try a new O2 sensor.

If I can find time to figure out the problem and wrap up my tuning changes I'll try to make it out this year.... If not, there's always next year. I'm still hopeful that I can knock out either the suspension/brakes/race wheel setup, or shoot for more lightweight parts and finish up the body work on the car (hopefully front doors, hatch, lexan).
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Old 11-13-2019, 11:12 AM   #186
RicersWetDream
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2014 Forester XT

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Well, the car continues to perpelex me, haven't really been able to drive it since August, and now it's put up for the winter. It doesn't help that I've been way too busy at work so I've put about 4 hours into it since then.

Symptom: P0172, system too rich.

What I've done so far:
Replaced front O2 - No change
Replaced MAF - No change
Replaced Old Perrin Air Filter with New - No change
Pressure Test Intake - No leaks
Compression Test (Cold) - 145, 139, 138, 137. Good results, looks like I have one cylinder that's a ringer.
Checked Plugs - No issues or signs of a leaky injector
Installed Fuel Pressure Gauge - Fuel pressure is spot on

Basically I've ruled out O2, MAF, FPR, a bad cylinder. This was a sudden change in the car so something broke. I'm 99% sure it's not a tune issue because the car was driving fine, then it wasn't.

Per the FSM, I'm following the diagnostic steps for this DTC. Check intake, check exhaust, check MAF, check FPR, next and last item on the list is checking the coolant temp sensor, then checking the intake air temp sensor.

The car seems to do just fine while warming up, then once it's mostly or fully warmed up it maxes out if's AF correction and runs about 12.5:1 at idle. During warm up the correction is in the +/- 3% range. Driving around it seems ok.

I'll check the coolant temp sensor, which is easy to just watch to see if it gets above 167 in the romraider logger, then I can check the IAT at the same time... So next time I start the car and let it warm up I should know if those are the issues. The only other thing on my mind is if my front plate blocking the lower radiator area is causing a problem with the ambient temp sensor... I have noticed the ambient on the clock gauge in the car seems to be higher than the true outside air temp now because it's blocked from airflow... I can't help but be curious if that is throwing off a calc by the ECU (intake temp minus ambient is used by the ECU). It would almost make sense too... That sensor gets heat soaked after the car warms up and trips the ECU into "i'm running hot, dump more fuel". Also, the symptom first surfaced when after about 90 minutes on the highway and getting stopped in traffic.... We'll see.

Last edited by RicersWetDream; 11-13-2019 at 11:19 AM.
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Old 11-27-2019, 11:22 AM   #187
josephsls
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Default Bracets out issue

Some brackets will only show a driver side option and will usually start with either a "B" or an "F" part number. When the bracket starts with an "F", it’s for the front seats and is a single bracket that will mount both your driver and passenger seats.
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Old 06-23-2020, 02:29 PM   #188
RicersWetDream
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2014 Forester XT

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2020 Update:

Solved my fueling issue. The maf went bad, and the replacement was non OEM and ended up needing to be rescaled. Ive been too busy to fine tune it but it's now within range of the ECU correcting itself.

Managed to bend a wheel last weekend so I ponied up for some OZ Alleggeritas, 17x7.5. They weigh 15.3# compared to the old rotas at 19.1 so I dropped about 15 pounds of wheel weight. This actually puts me at 2,699 with a full tank of gas and in street mode.



That should be it for work on the car this year... I'm in the middle of wrapping up an addition on my house and then maybe moving onto the new deck. I figure this year's winter projects will be the following:

TSS Fab subframes (hoping for both front and rear)
Wilwood Pinto Steering Rack
D2 Drag Coilovers
Racer x Front & Rear Control Arms
Racer X Trailing Arms
STM or P&L Drag Brake Kit F&R

This should drop about 120 more pounds out of the car, a good portion of it either rotating or unsprung. That'll put my street weight around 2,580 and I'll be nipping at 2,500 in race trim (no pass seat or harness, half tank of gas). Once the suspension is done the next round of project will be further lightening up the body. Hopefully CF front doors, definitely CF rear hatch, possibly lexan, gutting the rear doors. I'm hopeful that will get me to about 2,400 pounds in street trim.

Last edited by RicersWetDream; 06-23-2020 at 02:37 PM.
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Old 06-24-2020, 10:42 AM   #189
cale324
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Awesome! I'm looking forward to following this build!
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Old 06-24-2020, 11:03 AM   #190
kinitex
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Nice build, looks intense.
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Old 06-04-2021, 12:42 PM   #191
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Where are the updates ***55357;***56834;
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Old 10-08-2021, 03:13 PM   #192
JayTV1027
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Can we get another update please?
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Old 12-06-2021, 06:11 PM   #193
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Old 05-04-2022, 02:42 PM   #194
RicersWetDream
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2022 Update. Haven't done any work on the car since the new wheels/tires. I did slap some Michelin PS4s on it, 245/45/17's which are almost 26" tall tires as I managed to smoke 3 wheels with the old 235/40's. The taller gearing is great, I can hit 60 in second gear again and they are super meaty and look great.

I've just been enjoying it during the nice months, blasting on the back roads and taking the kids for rides.

I do think I'll start working towards the subframe / suspension / brake portion of my build sheet in the next 12 months. That should take care of the extreme wheel gap, and pull somewhere around 100 more pounds out of the car, getting me into the 2,500# range.
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Old 05-20-2022, 08:54 AM   #195
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I just started on this journey myself with my 2008 Subaru STI in the same color!



Not my daily driver, but I live where there are lots of twisty roads so the weight reductions make a huge difference in the corners. More than adding power IMHO. I will try to keep it street legal as well.

I've removed everything easy from the rear already... still have the door panels, seatbelts and airbags to do. Really loving the approach. The noise is a lot louder, but personally, I like hearing the road noise and the fuel pump. Especially driving on a lot of gravel roads...

What all did you have to do to remove the airbags from the rear and the sensors? I'm guessing I will need to add some electrical components and/or change the ECU programming to deal with the lack of sensors.
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Old 11-02-2022, 08:35 PM   #196
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