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Old 11-21-2020, 04:08 PM   #651
EvanSutton
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I need to figure out how much hp I can make on an Ej20g***128514;
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Old 11-21-2020, 04:59 PM   #652
snow_bound26
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Quote:
Originally Posted by EvanSutton View Post
I need to figure out how much hp I can make on an Ej20g***128514;
You need to figure out what you want to do with the car and talk to your tuner. If you want to know what the block is capable of in stock form, then try searching. That block has been around forever so whatever you want to has probably been done.
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Old 03-28-2021, 07:57 PM   #653
Kevin5255
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Iím prepared to be told to just search, but it seems appropriate to ask the question in this thread. Can I reliably make ~300whp on a FA20DIT with a stock turbo, stock engine? Pump gas, no ethanol. Im starting to make long term plans and my power goals arenít gonna be too crazy (I used to drive a Miata, the stock car feels like a top fuel dragster in a straight line).
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Old 07-27-2021, 06:25 PM   #654
virtus
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Default Dyno Numbers and you- What do you need to hit XXX hp?

Iíd like to know what it would take to make 300+whp without extreme price or a fmic on an otherwise stock 06 WRX sedan, iím from Brooklyn, so pretty low altitude, and iím not entirely opposed to running E85/flex, particularly considering the much lower price right now, but iíll probably be running 91 otherwise. Obviously without E85 itís a large request, but iíll definitely be doing work on it either way, whether itís a cobb s2 kit or custom parts, so I figured iíd ask.

If it can be done on stock turbo + engine and/or pump gas thatíd be huge.
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Old 07-27-2021, 06:37 PM   #655
snow_bound26
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Quote:
Originally Posted by virtus View Post
Iíd like to know what it would take to make 300+whp without extreme price or a fmic on an otherwise stock 06 WRX sedan, iím from Brooklyn, so pretty low altitude, and iím not entirely opposed to running E85/flex, particularly considering the much lower price right now, but iíll probably be running 91 otherwise. Obviously without E85 itís a large request, but iíll definitely be doing work on it either way, whether itís a cobb s2 kit or custom parts, so I figured iíd ask.

If it can be done on stock turbo + engine and/or pump gas thatíd be huge.


Generally a 16g or 18g sized turbo will get you there. Need larger injectors, fuel pump, down pipe, and quality tune. A better TMIC will help but it's not required.
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Old 07-27-2021, 06:43 PM   #656
Dave D.
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Quote:
Originally Posted by virtus View Post
I'd like to know what it would take to make 300+whp without extreme price or a fmic on an otherwise stock 06 WRX sedan, i'm from Brooklyn, so pretty low altitude, and i'm not entirely opposed to running E85/flex, particularly considering the much lower price right now, but i'll probably be running 91 otherwise. Obviously without E85 it's a large request, but i'll definitely be doing work on it either way, whether it's a cobb s2 kit or custom parts, so I figured i'd ask.

If it can be done on stock turbo + engine and/or pump gas that'd be huge.
Assuming the engine is in decent shape, the '06 WRX needs little to achieve 300whp on many dynos. Get a VF39 (or 43 or 48), a downpipe and a tune. A Walbro 255 wouldn't hurt either. The motor has the same sized injectors as the '06 STI, so really nothing else is necessary. I had such a setup that made 260whp/290wtq on a very stingy dyno, again close 300whp on many other dynos.

If you go flex noticeable gains can be made over this, but then it's new injectors and a flex fuel setup besides -- probably 3x the cost of the aforementioned setup at least. And now your tranny becomes at risk as well.
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Old 08-06-2021, 06:46 PM   #657
rpurcell
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This is super helpful, wish I read it sooner. Thank you!
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Old 09-12-2021, 03:31 PM   #658
Komrade WRX
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Hey guys, I'm planning out my build list right now for my 2021 WRX. I'm only at 175 miles, so I have a hot minute to go before I start adding anything on, but I'm gathering my build list now, so that I can be ready to start modding and getting tuned once I'm well clear of the break in. I'll start with my goals for the car, then include the list of what I'm looking at to get me there. This list is only for engine mods, not going to include all the susp/brakes/etc. I'll do the mods myself for the most part, as I have access to shop space and do this type of stuff on my truck already.

Location: San Diego, CA. (Sea Level)
Tuner/Shop: (unknown for now)
Goal WHP: 300+
Planned mods (in roughly this order):
1. Accessport V3 (MAPerformance OTS tune to start)
2. Grimmspeed (GS) catted J-pipe
3. Invidia r400 catback exhaust (open to other options though)
4. Cobb CAI
5. BPV (boomba primary, open to others. not doing BOV).
6. FMIC (GS or Perrin, open to others as well)
7. GS EBCS
8. Protune (likely do 7 & 8 together)

Let me know what you think is realistic for these mods. I'll likely do 1-5 all at once since I'll need to be under the car anyways and removing the skid plates and bumpers once would be ideal with regard to efficiency.
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Old 09-12-2021, 03:32 PM   #659
Komrade WRX
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Pure Red

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Hey guys, I'm planning out my build list right now for my 2021 WRX. I'm only at 175 miles, so I have a hot minute to go before I start adding anything on, but I'm gathering my build list now, so that I can be ready to start modding and getting tuned once I'm well clear of the break in. I'll start with my goals for the car, then include the list of what I'm looking at to get me there. This list is only for engine mods, not going to include all the susp/brakes/etc. I'll do the mods myself for the most part, as I have access to shop space and do this type of stuff on my truck already.

Location: San Diego, CA. (Sea Level)
Tuner/Shop: (unknown for now)
Goal WHP: 300+
Planned mods (in roughly this order):
1. Accessport V3 (MAPerformance OTS tune to start)
2. Grimmspeed (GS) catted J-pipe
3. Invidia r400 catback exhaust (open to other options though)
4. Cobb CAI
5. BPV (boomba primary, open to others. not doing BOV).
6. FMIC (GS or Perrin, open to others as well)
7. GS EBCS
8. Protune (likely do 7 & 8 together)

Let me know what you think is realistic for these mods. I'll likely do 1-5 all at once since I'll need to be under the car anyways and removing the skid plates and bumpers once would be ideal with regard to efficiency.
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Old 09-12-2021, 03:42 PM   #660
carsebuco
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Quote:
Originally Posted by Komrade WRX View Post
Hey guys, I'm planning out my build list right now for my 2021 WRX. I'm only at 175 miles, so I have a hot minute to go before I start adding anything on, but I'm gathering my build list now, so that I can be ready to start modding and getting tuned once I'm well clear of the break in. I'll start with my goals for the car, then include the list of what I'm looking at to get me there. This list is only for engine mods, not going to include all the susp/brakes/etc. I'll do the mods myself for the most part, as I have access to shop space and do this type of stuff on my truck already.

Location: San Diego, CA. (Sea Level)
Tuner/Shop: (unknown for now)
Goal WHP: 300+
Planned mods (in roughly this order):
1. Accessport V3 (MAPerformance OTS tune to start)
2. Grimmspeed (GS) catted J-pipe
3. Invidia r400 catback exhaust (open to other options though)
4. Cobb CAI
5. BPV (boomba primary, open to others. not doing BOV).
6. FMIC (GS or Perrin, open to others as well)
7. GS EBCS
8. Protune (likely do 7 & 8 together)

Let me know what you think is realistic for these mods. I'll likely do 1-5 all at once since I'll need to be under the car anyways and removing the skid plates and bumpers once would be ideal with regard to efficiency.
Or...

1) AP
2) Flex fuel kit & tune
2) ??
3) Profit (goal achieved)

Otherwise, yours sounds achievable with non-CA gas. I don't know how bad it is but those are the numbers my wife and our friends are pushing with very similar mods.
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Old 09-12-2021, 03:53 PM   #661
timpala11
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Join Date: Mar 2020
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Location: Philly
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RIP 19 WRX & 16 FXT

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Quote:
Originally Posted by Komrade WRX View Post
Location: San Diego, CA. (Sea Level)
Tuner/Shop: (unknown for now)
Goal WHP: 300+
Planned mods (in roughly this order):
1. Accessport V3 (MAPerformance OTS tune to start)
2. Grimmspeed (GS) catted J-pipe
3. Invidia r400 catback exhaust (open to other options though)
4. Cobb CAI

5. BPV (boomba primary, open to others. not doing BOV).
6. FMIC (GS or Perrin, open to others as well)
7. GS EBCS
8. Protune (likely do 7 & 8 together)
I had the mods in bold (except with Cobb OTS) with a Process West Verticooler and TGV/EGR deletes and made 330/330 on 93 (in PA). Flex kit bumped me up to 364/359 on E74 (just the blend I got from the station) but I tried to keep it around E50-60 bc the high pressure fuel pump (HPFP) didn't like it.

R400 with the J was a bit loud for my liking FYI. Not for around town but I am on the highway alot and I grew to occasionally loathe it. Ended up switching to a Q300 before Mother Nature took her out.
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Old 09-12-2021, 05:33 PM   #662
Komrade WRX
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Location: San Diego, California
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2021 WRX Premium
Pure Red

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Quote:
Originally Posted by carsebuco View Post
Or...

1) AP
2) Flex fuel kit & tune
2) ??
3) Profit (goal achieved)

Otherwise, yours sounds achievable with non-CA gas. I don't know how bad it is but those are the numbers my wife and our friends are pushing with very similar mods.

I haven't looked much into FF in my area. I'll have to dig into it some more before I commit to any mods for sure. Thanks for the input!



Quote:
Originally Posted by timpala11 View Post
I had the mods in bold (except with Cobb OTS) with a Process West Verticooler and TGV/EGR deletes and made 330/330 on 93 (in PA). Flex kit bumped me up to 364/359 on E74 (just the blend I got from the station) but I tried to keep it around E50-60 bc the high pressure fuel pump (HPFP) didn't like it.

R400 with the J was a bit loud for my liking FYI. Not for around town but I am on the highway alot and I grew to occasionally loathe it. Ended up switching to a Q300 before Mother Nature took her out.

Nice, I'm glad my list resembles someone else's. That is some good beta on the exhaust in the long term. Is the big difference between the r400 and Q300 just the muffler size? was it all the same tubing to the rear axle split?
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Old 09-12-2021, 05:36 PM   #663
K3rm1tth3fr0g
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Location: Greater Seattle Area
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being installed :)

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Quote:
Originally Posted by Komrade WRX View Post
I haven't looked much into FF in my area. I'll have to dig into it some more before I commit to any mods for sure. Thanks for the input!






Nice, I'm glad my list resembles someone else's. That is some good beta on the exhaust in the long term. Is the big difference between the r400 and Q300 just the muffler size? was it all the same tubing to the rear axle split?
Go flex fuel! It's worth it.
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Old 09-12-2021, 05:39 PM   #664
timpala11
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Location: Philly
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RIP 19 WRX & 16 FXT

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Quote:
Originally Posted by Komrade WRX View Post
Nice, I'm glad my list resembles someone else's. That is some good beta on the exhaust in the long term. Is the big difference between the r400 and Q300 just the muffler size? was it all the same tubing to the rear axle split?
Just the muffler size. Same mid-pipe and y-pipe. To get the mufflers on the front hangers you will have to remove the rear splash trays from each side though. I think. I'm not a pro just someone who found out the hard way doing a "20 minute" swap lol.
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Old 09-12-2021, 05:45 PM   #665
Komrade WRX
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2021 WRX Premium
Pure Red

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Quote:
Originally Posted by timpala11 View Post
Just the muffler size. Same mid-pipe and y-pipe. To get the mufflers on the front hangers you will have to remove the rear splash trays from each side though. I think. I'm not a pro just someone who found out the hard way doing a "20 minute" swap lol.

We've all learned that lesson one way or another
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Old 09-12-2021, 05:59 PM   #666
timpala11
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RIP 19 WRX & 16 FXT

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Quote:
Originally Posted by Komrade WRX View Post
We've all learned that lesson one way or another
Only every first time I do something, which in my amateur career has been every time
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Old 11-01-2021, 11:01 AM   #667
Alistairh
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Any thoughts on a ~450whp on 91 + 50/50 Meth Turbo on a mustang dyno?
Car is a fully built EJ257 with AVCS, S2 cams, rotated turbo setup.
Has a GT3076R on it with a .82AR housing currently.
Killer B Holy header, rotated up pipe, 1k cc injectors, FMIC
Will likely NEVER see e85. Have access to 99 AKI though.

New turbo ideally has a T3 inlet and 3" Vband outlet.

Should I just get a GTX3076R gen 2 supercore and call it a day? Was thinking maybe a G30-660
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Old 11-01-2021, 11:43 AM   #668
snow_bound26
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Quote:
Originally Posted by Alistairh View Post
Any thoughts on a ~450whp on 91 + 50/50 Meth Turbo on a mustang dyno?
Car is a fully built EJ257 with AVCS, S2 cams, rotated turbo setup.
Has a GT3076R on it with a .82AR housing currently.
Killer B Holy header, rotated up pipe, 1k cc injectors, FMIC
Will likely NEVER see e85. Have access to 99 AKI though.

New turbo ideally has a T3 inlet and 3" Vband outlet.

Should I just get a GTX3076R gen 2 supercore and call it a day? Was thinking maybe a G30-660


Killer B and several others have found the 3576 performs better without any real world drawbacks compared to the 3076. It will also get you to the goal with less effort and therefore be more efficient at your intended power level.

In my research, I've found it hard to justify the G-series over the GTX gen2. They seem to perform very close to each other on the EJ platform. On other engines the G-series does better. There are a couple 2.35 builds I've been following which seem to have done well with the G-series turbos. However, there's no back to back comparison to see if the GTX options would've done as well.

You may need larger injectors most likely to get to that power.
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Old 11-01-2021, 12:06 PM   #669
K3rm1tth3fr0g
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Location: Greater Seattle Area
Vehicle:
2002 WRX - Link ECU
being installed :)

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Quote:
Originally Posted by snow_bound26 View Post
Killer B and several others have found the 3576 performs better without any real world drawbacks compared to the 3076. It will also get you to the goal with less effort and therefore be more efficient at your intended power level.

In my research, I've found it hard to justify the G-series over the GTX gen2. They seem to perform very close to each other on the EJ platform. On other engines the G-series does better. There are a couple 2.35 builds I've been following which seem to have done well with the G-series turbos. However, there's no back to back comparison to see if the GTX options would've done as well.

You may need larger injectors most likely to get to that power.
^^^This^^^

GTX3576 Gen 2 is the best Garrett turbo for 2.5L for 450+WHP. Spools close to stock but makes heaps of power.

And the turbine and compressor wheel are well matched to eachother unlike the 3076 imo.
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