Mods required to reach 380bhp on 2007 STI
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Mods required to reach 380bhp on 2007 STI
Hi all, my aim for this summer is to get to 380bhp. I currently have a 2007 STI which has the following mods:
FORGED PISTONS
PERFORMANCE PANEL FILTER
DECAT PIPE (on standard STI exhaust)
WALBRO FUEL PUMP
REMAPPED TO 330bhp
Ideally I would like to keep my standard airbox as i like to keep it quite quiet . Please can you advise what other mods I need to do to get 380bhp? Someone has said that I can simply add a bigger turbo like the lateral performance 321t and then remap again and I should get 380bhp. I just wanted to get some other views on this please, if you think I will need other mods then please can you advise what ones? Once again thank you all in advanced !
FORGED PISTONS
PERFORMANCE PANEL FILTER
DECAT PIPE (on standard STI exhaust)
WALBRO FUEL PUMP
REMAPPED TO 330bhp
Ideally I would like to keep my standard airbox as i like to keep it quite quiet . Please can you advise what other mods I need to do to get 380bhp? Someone has said that I can simply add a bigger turbo like the lateral performance 321t and then remap again and I should get 380bhp. I just wanted to get some other views on this please, if you think I will need other mods then please can you advise what ones? Once again thank you all in advanced !
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Why 380 firstly ? As you can get away keeping a few things , but on the flip side will be close to maxing out ( not necessary a good thing ...
My advise would be acumilate all the parts for a bigger spec & have a engine wich will work well within its tolerance ..
If 380 as a max figure you require
Your VF43 will suffice as will your 550 blues ( just about .
Your goin to need ported OEM Headers , up pipe ( 2 bolt
Or go RCM with up pipe ( 3 bolt
Your 2 port sol is good for a bit more but change it out for a 3 for better control
Map sensor I would up
Down pipe full decat or sport cat 3" tailing down is fine
You will need a clutch if your still on your OEM
Exedy pink box etc etc
That all is goin to cost you a bit
As I said I would personally build it beyond that
Turbo
Injectors
Fueling
Intake
Regards
My advise would be acumilate all the parts for a bigger spec & have a engine wich will work well within its tolerance ..
If 380 as a max figure you require
Your VF43 will suffice as will your 550 blues ( just about .
Your goin to need ported OEM Headers , up pipe ( 2 bolt
Or go RCM with up pipe ( 3 bolt
Your 2 port sol is good for a bit more but change it out for a 3 for better control
Map sensor I would up
Down pipe full decat or sport cat 3" tailing down is fine
You will need a clutch if your still on your OEM
Exedy pink box etc etc
That all is goin to cost you a bit
As I said I would personally build it beyond that
Turbo
Injectors
Fueling
Intake
Regards
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Why 380 firstly ? As you can get away keeping a few things , but on the flip side will be close to maxing out ( not necessary a good thing ...
My advise would be acumilate all the parts for a bigger spec & have a engine wich will work well within its tolerance ..
If 380 as a max figure you require
Your VF43 will suffice as will your 550 blues ( just about .
Your goin to need ported OEM Headers , up pipe ( 2 bolt
Or go RCM with up pipe ( 3 bolt
Your 2 port sol is good for a bit more but change it out for a 3 for better control
Map sensor I would up
Down pipe full decat or sport cat 3" tailing down is fine
You will need a clutch if your still on your OEM
Exedy pink box etc etc
That all is goin to cost you a bit
As I said I would personally build it beyond that
Turbo
Injectors
Fueling
Intake
Regards
My advise would be acumilate all the parts for a bigger spec & have a engine wich will work well within its tolerance ..
If 380 as a max figure you require
Your VF43 will suffice as will your 550 blues ( just about .
Your goin to need ported OEM Headers , up pipe ( 2 bolt
Or go RCM with up pipe ( 3 bolt
Your 2 port sol is good for a bit more but change it out for a 3 for better control
Map sensor I would up
Down pipe full decat or sport cat 3" tailing down is fine
You will need a clutch if your still on your OEM
Exedy pink box etc etc
That all is goin to cost you a bit
As I said I would personally build it beyond that
Turbo
Injectors
Fueling
Intake
Regards
Thanks for the info, i thought 380bhp would be good as i thought that i dont have to change so many things in the engine to get to that figure. I dont plan on taking it on a track just maybe the odd 1/4 mile run maybe once a year, but its mainly for the street so it wont be running maxed out that often..Anyway thanks for the advise appreciate it mate.
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#8
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If you start changing for a bigger turbo like the MD321 or SC46 etc you will need to start looking at having the engine forged, and your looking at £1000+ for just the turbo!!
A 3"inch turbo back exhaust system would be a good start, maybe porting & polishing the standard headers and upipe and getting it remapped again, should see you not far off 380bhp, just dont be to hung up on a exact numbers, as its how the car drives that really matters!!
Maybe if you was looking at doing something to your turbo then have you thought about putting a billet compressor wheel in your standard VF43??? A lot cheaper then paying out for one of the expensive turbo's and should spool up quicker and make a bit more power!!!
http://www.xsboostturbochargers.com/...f39-vf43-vf48/
A 3"inch turbo back exhaust system would be a good start, maybe porting & polishing the standard headers and upipe and getting it remapped again, should see you not far off 380bhp, just dont be to hung up on a exact numbers, as its how the car drives that really matters!!
Maybe if you was looking at doing something to your turbo then have you thought about putting a billet compressor wheel in your standard VF43??? A lot cheaper then paying out for one of the expensive turbo's and should spool up quicker and make a bit more power!!!
http://www.xsboostturbochargers.com/...f39-vf43-vf48/
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If you start changing for a bigger turbo like the MD321 or SC46 etc you will need to start looking at having the engine forged, and your looking at £1000+ for just the turbo!!
A 3"inch turbo back exhaust system would be a good start, maybe porting & polishing the standard headers and upipe and getting it remapped again, should see you not far off 380bhp, just dont be to hung up on a exact numbers, as its how the car drives that really matters!!
Maybe if you was looking at doing something to your turbo then have you thought about putting a billet compressor wheel in your standard VF43??? A lot cheaper then paying out for one of the expensive turbo's and should spool up quicker and make a bit more power!!!
http://www.xsboostturbochargers.com/...f39-vf43-vf48/
A 3"inch turbo back exhaust system would be a good start, maybe porting & polishing the standard headers and upipe and getting it remapped again, should see you not far off 380bhp, just dont be to hung up on a exact numbers, as its how the car drives that really matters!!
Maybe if you was looking at doing something to your turbo then have you thought about putting a billet compressor wheel in your standard VF43??? A lot cheaper then paying out for one of the expensive turbo's and should spool up quicker and make a bit more power!!!
http://www.xsboostturbochargers.com/...f39-vf43-vf48/
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I'm running 396 on the original 43, but slightly ported, so the turbo is good for the sort of power you want but mine is modified to get it up that high.. hyperflow front mount, 3" De cat. Miltelk system, hyperflow air intake relocation to inner wing, 1 bar forge actuator, walbro fuel pump.
But running standard injectors and engine in a 07 plate Sti type UK.
Mapped by Bob rawle
But running standard injectors and engine in a 07 plate Sti type UK.
Mapped by Bob rawle
#17
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Should be okay for 380 but you could probably push to 400-odd. I guess it depends on whether or not you care if it goes boom, if you don't then go for what you can.
To go much above your target you'd ideally want forged connecting rods and uprated bearings, depending on use.
Big limiter with 2.5 blocks is the block itself as they don't do well at high boost.
To go much above your target you'd ideally want forged connecting rods and uprated bearings, depending on use.
Big limiter with 2.5 blocks is the block itself as they don't do well at high boost.
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Still on standard turbo, inj and intercooler
340ltr hr Torques fuel pump
Full 3" exhaust
And mapped by Bob Rawle
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I'm running 396 on the original 43, but slightly ported, so the turbo is good for the sort of power you want but mine is modified to get it up that high.. hyperflow front mount, 3" De cat. Miltelk system, hyperflow air intake relocation to inner wing, 1 bar forge actuator, walbro fuel pump.
But running standard injectors and engine in a 07 plate Sti type UK.
Mapped by Bob rawle
But running standard injectors and engine in a 07 plate Sti type UK.
Mapped by Bob rawle
#20
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Not strictly correct..... it's about the cylinder pressure, which is not just boost related on it's own, but about the amount of air that's being consumed. This would be totally different if it was a VF43 or say a GT3076 at the same boost pressures.
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Thanks for the info, everyone who gets their car mapped by Bob rawle seems to get really high power figures, I might have to visit him after I have got my 3 inch exhaust fitted and got my headers ported, please can you advise where he is based ? Does he have a website where I can contact him ect?
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Ok thats great please can you advise where i can get my headers ported? also do you think i could get 380bhp with a fully decat 2.5 standard sti exhaust also walbro 255 fuel pump?
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Thanks for the info, everyone who gets their car mapped by Bob rawle seems to get really high power figures, I might have to visit him after I have got my 3 inch exhaust fitted and got my headers ported, please can you advise where he is based ? Does he have a website where I can contact him ect?
Search brdevelopments.
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#28
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There is a secondery air pump system that connects into the heads ,,, this can be deleted with two blanking plates and removed (needs mapping to remove fault code aswell),,, you can make the plates yourself if needed as I did
The tgv's are the two bits that sit under your inlet manifold that your injectors are connected into ,, they have butterfly valve inside and you can replace them with ones without the butterfly valves inside (tgv deletes ) ,, also needs mapping to remove the codes
These are both for emissions I belive
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There is a secondery air pump system that connects into the heads ,,, this can be deleted with two blanking plates and removed (needs mapping to remove fault code aswell),,, you can make the plates yourself if needed as I did
The tgv's are the two bits that sit under your inlet manifold that your injectors are connected into ,, they have butterfly valve inside and you can replace them with ones without the butterfly valves inside (tgv deletes ) ,, also needs mapping to remove the codes
These are both for emissions I belive
The tgv's are the two bits that sit under your inlet manifold that your injectors are connected into ,, they have butterfly valve inside and you can replace them with ones without the butterfly valves inside (tgv deletes ) ,, also needs mapping to remove the codes
These are both for emissions I belive
#30
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I would ask Paul Finch (finchmotorsport) to see if he can help you with your car, he can't be more than 10 minutes from you (07790877519) He helped Butty with his Hawk STI when he had an HG issue, then running 380hp on a 20g with standard engine and would point you in the right direction.
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