How to get 400ish bhp??
13 April 2007, 03:56 PM
#1
Scooby Regular
Thread Starter
Join Date: Apr 2007
Posts: 39
Likes: 0
Received 0 Likes
on
0 Posts
How to get 400ish bhp??
Hi,
First post on here!
At the moment I have a EVO 8 Sitting at around 400bhp/400torque.
Getting a bit fed up with the EVO and have looked at buying a Scooby again.
Have been looking at a 2003 WRX what mods would I require to reach 400bhp? and what is likley to cost??
First post on here!
At the moment I have a EVO 8 Sitting at around 400bhp/400torque.
Getting a bit fed up with the EVO and have looked at buying a Scooby again.
Have been looking at a 2003 WRX what mods would I require to reach 400bhp? and what is likley to cost??
13 April 2007, 04:03 PM
#2
Moderator
iTrader: (4)
Join Date: Jul 2004
Location: The Terry Crews of moderation. P P P P P P POWER!!
Posts: 18,687
Likes: 0
Received 0 Likes
on
0 Posts
Hi,
First post on here!
At the moment I have a EVO 8 Sitting at around 400bhp/400torque.
Getting a bit fed up with the EVO and have looked at buying a Scooby again.
Have been looking at a 2003 WRX what mods would I require to reach 400bhp? and what is likley to cost??
First post on here!
At the moment I have a EVO 8 Sitting at around 400bhp/400torque.
Getting a bit fed up with the EVO and have looked at buying a Scooby again.
Have been looking at a 2003 WRX what mods would I require to reach 400bhp? and what is likley to cost??
A lot!! Not economical!
From an Uk STi,
Still quite a bit, but you wouldn't have to worry about pistons, rods and the gearbox etc...
From a JDM STi.
Not so much.
I'd speak to someone like David at APi for advice.
Ns04
13 April 2007, 04:11 PM
#3
Scooby Regular
Thread Starter
Join Date: Apr 2007
Posts: 39
Likes: 0
Received 0 Likes
on
0 Posts
So with the wrx I would need to replace rods and pistons etc?? So what the max you can get from a wrx??
I forgot the sti had forged rods and pistons. So what kinda mods would I need??
At the mo I would have around 2-3 grand to play with
I forgot the sti had forged rods and pistons. So what kinda mods would I need??
At the mo I would have around 2-3 grand to play with
13 April 2007, 04:32 PM
#5
Scooby Regular
I`m no expert yet, but you`ll need a re-map/ fuel pump, turbo back exhaust for starters, but this will get you nowhere near your 400, in a WRX i think it would have to be the forged route for 400/400....but that`s only my little knowledge, i`m sure someone will correct, but i`m trying to help you...
13 April 2007, 04:49 PM
#7
Scooby Regular
iTrader: (4)
Join Date: Jun 2005
Location: South Wales, Scoobless, Type R is gone!
Posts: 3,618
Likes: 0
Received 0 Likes
on
0 Posts
With an STI you would probably need:
Decent Exhaust with sports cat or de-cat
Maybe uprated fuel pump and reg
A slightly bigger turbo (lateral performance MD 321 H or T, H for around 400 and T for around 450)
Re-map
Possibly a FMIC would be a good idea aswell.
For a WRX the weakest point would be the gearbox so would either need rebuilding with PAR/PPG gearset or fit a 6 speed sti box
Decent Exhaust with sports cat or de-cat
Maybe uprated fuel pump and reg
A slightly bigger turbo (lateral performance MD 321 H or T, H for around 400 and T for around 450)
Re-map
Possibly a FMIC would be a good idea aswell.
For a WRX the weakest point would be the gearbox so would either need rebuilding with PAR/PPG gearset or fit a 6 speed sti box
Trending Topics
13 April 2007, 04:50 PM
#8
Scooby Regular
Yes, STI`s are forged.....
Different cars taylor obviously, the RA is mental upto about 130, it`s quicker then the Mak was and that had 379bhp as you know. It`s mapeed @ 1.4 bar 320-330 but only weighs just over 1110 kg..
I just prefer the Subaru if i`m honest, they have character IMO, but i`m not slagging the Evos off still awesome cars. Hope you get sorted mate.....
13 April 2007, 04:53 PM
#9
Scooby Regular
Thread Starter
Join Date: Apr 2007
Posts: 39
Likes: 0
Received 0 Likes
on
0 Posts
With an STI you would probably need:
Decent Exhaust with sports cat or de-cat
Maybe uprated fuel pump and reg
A slightly bigger turbo (lateral performance MD 321 H or T, H for around 400 and T for around 450)
Re-map
Possibly a FMIC would be a good idea aswell.
For a WRX the weakest point would be the gearbox so would either need rebuilding with PAR/PPG gearset or fit a 6 speed sti box
Decent Exhaust with sports cat or de-cat
Maybe uprated fuel pump and reg
A slightly bigger turbo (lateral performance MD 321 H or T, H for around 400 and T for around 450)
Re-map
Possibly a FMIC would be a good idea aswell.
For a WRX the weakest point would be the gearbox so would either need rebuilding with PAR/PPG gearset or fit a 6 speed sti box
So really all i would need is:
Exhaust system
Induction kit
Fuel Pump
Turbo
and a remap or ECU??
13 April 2007, 05:00 PM
#10
Scooby Regular
13 April 2007, 05:02 PM
#11
Scooby Regular
Thread Starter
Join Date: Apr 2007
Posts: 39
Likes: 0
Received 0 Likes
on
0 Posts
Yes, STI`s are forged.....
Different cars taylor obviously, the RA is mental upto about 130, it`s quicker then the Mak was and that had 379bhp as you know. It`s mapeed @ 1.4 bar 320-330 but only weighs just over 1110 kg..
I just prefer the Subaru if i`m honest, they have character IMO, but i`m not slagging the Evos off still awesome cars. Hope you get sorted mate.....
Different cars taylor obviously, the RA is mental upto about 130, it`s quicker then the Mak was and that had 379bhp as you know. It`s mapeed @ 1.4 bar 320-330 but only weighs just over 1110 kg..
I just prefer the Subaru if i`m honest, they have character IMO, but i`m not slagging the Evos off still awesome cars. Hope you get sorted mate.....
13 April 2007, 05:04 PM
#12
Scooby Regular
13 April 2007, 05:04 PM
#13
Scooby Regular
Thread Starter
Join Date: Apr 2007
Posts: 39
Likes: 0
Received 0 Likes
on
0 Posts
13 April 2007, 05:06 PM
#14
Scooby Regular
Thread Starter
Join Date: Apr 2007
Posts: 39
Likes: 0
Received 0 Likes
on
0 Posts
13 April 2007, 05:09 PM
#15
Scooby Regular
Ok to be honest, not that 4.5k Mitsi service everytime, fuel wise i`m probably about the same as the Mak, but in my opinon Subaru are that bit cheaper to run...kiss of death now...
Have you tried looking on Pistonheads??? is yours up for sale yet??
13 April 2007, 05:14 PM
#17
Former Sponsor
iTrader: (4)
Join Date: Jul 2003
Location: @Junc 12, M40 Warwicksh; 01926 614522 CV33 9PL -Use 9GX for Satnav. South Mids Alcatek ECu dealer
Posts: 6,377
Likes: 0
Received 3 Likes
on
3 Posts
You won't get a definite 400 hp from an STi or a WRX for 2 - 3 grand. Double that and you are in the ballpark.
You''ll need forged pistons, steel rods IE a rebuild in which case crank bearings, cam belt gaskets, etc etc. so about £2500.00 + Fitting
A clutch and flywheel capable of 400hp. @ £500.00
Stainless tubular headers. @ £400.00 for ones that work.....
3 inch decat exhaust. @ £400.00 + fitting
GOOD induction system. @ £125.00
Bigger injectors @ £300.00
high pressure fuel pump. @ £100.00 + fitting
BIG turbo MD321H is my choice. @ £1300.00
FMIC @ £800.00 fitted for one that works properly
and a remap @ £500.00
PLUS VAT
No doubt a few will get on and challenge those figures, but to be done professionally with people who know their stuff and get it right, that's a ballpark.
Remember, mates who work at Subaru dealers who moonlight will work for a drink, which professionals cannot compete with.
David APi
You''ll need forged pistons, steel rods IE a rebuild in which case crank bearings, cam belt gaskets, etc etc. so about £2500.00 + Fitting
A clutch and flywheel capable of 400hp. @ £500.00
Stainless tubular headers. @ £400.00 for ones that work.....
3 inch decat exhaust. @ £400.00 + fitting
GOOD induction system. @ £125.00
Bigger injectors @ £300.00
high pressure fuel pump. @ £100.00 + fitting
BIG turbo MD321H is my choice. @ £1300.00
FMIC @ £800.00 fitted for one that works properly
and a remap @ £500.00
PLUS VAT
No doubt a few will get on and challenge those figures, but to be done professionally with people who know their stuff and get it right, that's a ballpark.
Remember, mates who work at Subaru dealers who moonlight will work for a drink, which professionals cannot compete with.
David APi
13 April 2007, 05:22 PM
#18
Scooby Regular
Thread Starter
Join Date: Apr 2007
Posts: 39
Likes: 0
Received 0 Likes
on
0 Posts
You won't get a definite 400 hp from an STi or a WRX for 2 - 3 grand. Double that and you are in the ballpark.
You''ll need forged pistons, steel rods IE a rebuild in which case crank bearings, cam belt gaskets, etc etc. so about £2500.00 + Fitting
A clutch and flywheel capable of 400hp. @ £500.00
Stainless tubular headers. @ £400.00 for ones that work.....
3 inch decat exhaust. @ £400.00 + fitting
GOOD induction system. @ £125.00
Bigger injectors @ £300.00
high pressure fuel pump. @ £100.00 + fitting
BIG turbo MD321H is my choice. @ £1300.00
FMIC @ £800.00 fitted for one that works properly
and a remap @ £500.00
PLUS VAT
No doubt a few will get on and challenge those figures, but to be done professionally with people who know their stuff and get it right, that's a ballpark.
Remember, mates who work at Subaru dealers who moonlight will work for a drink, which professionals cannot compete with.
David APi
You''ll need forged pistons, steel rods IE a rebuild in which case crank bearings, cam belt gaskets, etc etc. so about £2500.00 + Fitting
A clutch and flywheel capable of 400hp. @ £500.00
Stainless tubular headers. @ £400.00 for ones that work.....
3 inch decat exhaust. @ £400.00 + fitting
GOOD induction system. @ £125.00
Bigger injectors @ £300.00
high pressure fuel pump. @ £100.00 + fitting
BIG turbo MD321H is my choice. @ £1300.00
FMIC @ £800.00 fitted for one that works properly
and a remap @ £500.00
PLUS VAT
No doubt a few will get on and challenge those figures, but to be done professionally with people who know their stuff and get it right, that's a ballpark.
Remember, mates who work at Subaru dealers who moonlight will work for a drink, which professionals cannot compete with.
David APi
I was under the impression that the STI wouldnt need new rods and pistons??
How far can you go on the standard internals then??
Not a bad price really
13 April 2007, 05:38 PM
#19
Former Sponsor
iTrader: (4)
Join Date: Jul 2003
Location: @Junc 12, M40 Warwicksh; 01926 614522 CV33 9PL -Use 9GX for Satnav. South Mids Alcatek ECu dealer
Posts: 6,377
Likes: 0
Received 3 Likes
on
3 Posts
03 onwards JDM will make/take 400 - but without any safe headroom. My own one gets the treatment and will show 400 on a dyno. Great fun to drive and if I break the engine - so what?
But to do that for a customer the risk is a bit high.
The STi 'forged ' pistons aren't really forged in the Cosworth / Omega sense of the word. They are still a good piston, but are original equipment compromise-type forgings that serve a purpose. 400 is possible but still with no safety margin.
AND 03 onwards STi pistons are ' hyper-Eutectic ' which is a posh word for Bullsh*t castings. They won't take decent levels of boost [+1.35 bar ] without fracturing ring lands and failing. Sti 7 JDM are the last fitted forged pistons in the manufacturers sense again.
The rods on 03 onwards STi are Ok, much stronger than anything previous But I cannot yet find any data from us or friend/competitors that suggests a safe limit for standard 03 rods. Fancy being a test pilot ?? I thought not
Call me sometime for sensible chat about what is achievable with your budget.
OR even look at my late model cars for sale in case something tempts you
David
But to do that for a customer the risk is a bit high.
The STi 'forged ' pistons aren't really forged in the Cosworth / Omega sense of the word. They are still a good piston, but are original equipment compromise-type forgings that serve a purpose. 400 is possible but still with no safety margin.
AND 03 onwards STi pistons are ' hyper-Eutectic ' which is a posh word for Bullsh*t castings. They won't take decent levels of boost [+1.35 bar ] without fracturing ring lands and failing. Sti 7 JDM are the last fitted forged pistons in the manufacturers sense again.
The rods on 03 onwards STi are Ok, much stronger than anything previous But I cannot yet find any data from us or friend/competitors that suggests a safe limit for standard 03 rods. Fancy being a test pilot ?? I thought not
Call me sometime for sensible chat about what is achievable with your budget.
OR even look at my late model cars for sale in case something tempts you
David
13 April 2007, 05:41 PM
#20
Scooby Regular
Join Date: Nov 2000
Location: 32 cylinders and many cats
Posts: 18,658
Likes: 0
Received 1 Like
on
1 Post
You may be bored of the Evo because it is characterless, but the work required out of a Subaru 2.0 to get a narrow power band (twin scroll, VVT or 2.5 excepted) 400 BHP is costly in comparison to the £200 or so to get some Evos to c.400 BHP with full boost at 2500 RPM 
13 April 2007, 05:42 PM
#21
Scooby Regular
Thread Starter
Join Date: Apr 2007
Posts: 39
Likes: 0
Received 0 Likes
on
0 Posts
03 onwards JDM will make/take 400 - but without any safe headroom. My own one gets the treatment and will show 400 on a dyno. Great fun to drive and if I break the engine - so what?
But to do that for a customer the risk is a bit high.
The STi 'forged ' pistons aren't really forged in the Cosworth / Omega sense of the word. They are still a good piston, but are original equipment compromise-type forgings that serve a purpose. 400 is possible but still with no safety margin.
AND 03 onwards STi pistons are ' hyper-Eutectic ' which is a posh word for Bullsh*t castings. They won't take decent levels of boost [+1.35 bar ] without fracturing ring lands and failing. Sti 7 JDM are the last fitted forged pistons in the manufacturers sense again.
The rods on 03 onwards STi are Ok, much stronger than anything previous But I cannot yet find any data from us or friend/competitors that suggests a safe limit for standard 03 rods. Fancy being a test pilot ?? I thought not
Call me sometime for sensible chat about what is achievable with your budget.
OR even look at my late model cars for sale in case something tempts you
David
But to do that for a customer the risk is a bit high.
The STi 'forged ' pistons aren't really forged in the Cosworth / Omega sense of the word. They are still a good piston, but are original equipment compromise-type forgings that serve a purpose. 400 is possible but still with no safety margin.
AND 03 onwards STi pistons are ' hyper-Eutectic ' which is a posh word for Bullsh*t castings. They won't take decent levels of boost [+1.35 bar ] without fracturing ring lands and failing. Sti 7 JDM are the last fitted forged pistons in the manufacturers sense again.
The rods on 03 onwards STi are Ok, much stronger than anything previous But I cannot yet find any data from us or friend/competitors that suggests a safe limit for standard 03 rods. Fancy being a test pilot ?? I thought not
Call me sometime for sensible chat about what is achievable with your budget.
OR even look at my late model cars for sale in case something tempts you
David
You dont fancy a EVO 8 in exchange for the Black sti??
13 April 2007, 06:15 PM
#22
Scooby Regular
iTrader: (4)
Join Date: Jul 2001
Location: MSOC..........middlesex subaru owners club
Posts: 10,429
Likes: 0
Received 0 Likes
on
0 Posts
how about
APS top mount
APS exhaust decat
APS cold air induction
fuel pump
re map
around 2.5 to 3k fitted price
mine runs 365bhp 360 torque
budgie
APS top mount
APS exhaust decat
APS cold air induction
fuel pump
re map
around 2.5 to 3k fitted price
mine runs 365bhp 360 torque
budgie
13 April 2007, 08:07 PM
#23
Scooby Regular
Thread Starter
Join Date: Apr 2007
Posts: 39
Likes: 0
Received 0 Likes
on
0 Posts
13 April 2007, 10:28 PM
#26
Scooby Regular
iTrader: (3)
Join Date: Aug 2000
Location: 1600cc's of twin scroll fun :)
Posts: 25,565
Likes: 0
Received 2 Likes
on
2 Posts
Powerstation do a 400+ package on the JDM new age (twin scroll model cars) for 2.5k 
If its one of Iains cars with the miltek exhaust then you wont have any problems, will run pretty much 400bhp with the turbo upgrade, upgraded injectors and a couple of other minor bits.
Also not known one JDM Twin scroll engine to let go, they are very strong considering they dont have those dodgy cast pistons
Tony
If its one of Iains cars with the miltek exhaust then you wont have any problems, will run pretty much 400bhp with the turbo upgrade, upgraded injectors and a couple of other minor bits.
Also not known one JDM Twin scroll engine to let go, they are very strong considering they dont have those dodgy cast pistons
Tony
