Upgrade Turbo
#3
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BPM have bolt on kits for 320HP Garret and 400HP Turbo , these are ball bearing , water cooled and provide excellent driveability and
have had many years of testing in Australia.
The Sti Turbo is only rated at 280HP so you can see there is a significant difference.
Greg
Boost Performance Motorsport
"The ruthless pursuit of speed"
have had many years of testing in Australia.
The Sti Turbo is only rated at 280HP so you can see there is a significant difference.
Greg
Boost Performance Motorsport
"The ruthless pursuit of speed"
#4
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AVO in Melbourne Australia have performed extensive testing of a variety of turbos and other performance enhancing modifications.
Refer to;
www.onvic.com.au/motoring/magazine/power/index.htm
Refer to;
www.onvic.com.au/motoring/magazine/power/index.htm
#7
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I am in Japan and wondering about possible upgrades for my WRX.
Someone mentioned "Japanese chips" so I presume that it is not illegal in Japan to change, and deregulate the chip set?? Or do the Japanese chips take WRXs up to, but not over the 280ps limit? I have a non STi WRX 96 wagon ("C" or version 2, I believe) with 220ps (206hp) and wonder I can fit a cheapish new chip to increase the performance to STi (280ps), or at least Saloon standards (240ps).
Even if I changed the chip I would have to increase the ariflow apparently? I don't want a very noisy exhaust but hear that the "Tanabe" is not too noisy. Or does improvements in airflow mean more noise? Some people like noise.
Also, most Japanese boy racers seem to fit blow off ??! valves with a characteristic sound like someone sneezing. Is there a performance increase or do they simply make an interesting noise.
And then there are all sort of new air filters in the local autoparts shop.
Which do I buy first (chip, exhaust, or airfilter?)
With all these discussions is there a definative web site answer?
And another thing.. the two grills on either side of the bonnet are covered over. If cool air (with greater pressure) is a plus, then why are the grills in the bonnet covered over?
The STi seems to have a different, shiny intercooler (mine is black like a normal radiator), and probably different turbo unit. Is this the answer? There are probably available from breakers yards.
Then there is the problem that the engine of the standard WRX is not as strong as the STi, with its different head and stronger pistons. Is the Japanese WRX the same as that used in the UK car, or stronger? Or weaker?
Can one buy the pistons and head block separately? STis are about 40% more than WRX's here (which are pretty cheap - mine was 7500 all inclusive, minus part exchange on an old car). If the engine is an untuned Sti then I might try and tune it, but if it is radically different then there is no point.
I know that there are other strut, suspension and brake differences but, since this is a Turbo upgrade thread...
Someone mentioned "Japanese chips" so I presume that it is not illegal in Japan to change, and deregulate the chip set?? Or do the Japanese chips take WRXs up to, but not over the 280ps limit? I have a non STi WRX 96 wagon ("C" or version 2, I believe) with 220ps (206hp) and wonder I can fit a cheapish new chip to increase the performance to STi (280ps), or at least Saloon standards (240ps).
Even if I changed the chip I would have to increase the ariflow apparently? I don't want a very noisy exhaust but hear that the "Tanabe" is not too noisy. Or does improvements in airflow mean more noise? Some people like noise.
Also, most Japanese boy racers seem to fit blow off ??! valves with a characteristic sound like someone sneezing. Is there a performance increase or do they simply make an interesting noise.
And then there are all sort of new air filters in the local autoparts shop.
Which do I buy first (chip, exhaust, or airfilter?)
With all these discussions is there a definative web site answer?
And another thing.. the two grills on either side of the bonnet are covered over. If cool air (with greater pressure) is a plus, then why are the grills in the bonnet covered over?
The STi seems to have a different, shiny intercooler (mine is black like a normal radiator), and probably different turbo unit. Is this the answer? There are probably available from breakers yards.
Then there is the problem that the engine of the standard WRX is not as strong as the STi, with its different head and stronger pistons. Is the Japanese WRX the same as that used in the UK car, or stronger? Or weaker?
Can one buy the pistons and head block separately? STis are about 40% more than WRX's here (which are pretty cheap - mine was 7500 all inclusive, minus part exchange on an old car). If the engine is an untuned Sti then I might try and tune it, but if it is radically different then there is no point.
I know that there are other strut, suspension and brake differences but, since this is a Turbo upgrade thread...
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#8
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The lag for the 320HP is negligible and is the ultimate street weapon.
400Hp does start to feel the lag and unless major HP is your aim the 320 is excellent.
Greg Nikolettos
Boost Performance Motoring
UK Marketing Manager
400Hp does start to feel the lag and unless major HP is your aim the 320 is excellent.
Greg Nikolettos
Boost Performance Motoring
UK Marketing Manager
#9
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Thanks for all your replies guys.I have test drove a friend's WRX wagon fitted with a turbo from a STi ver 4 and his car really can accelerate fast.Begin to feel the pulling force above 3500 rpm and once the turbo spools up,there is no hesistation to go to 7000 rpm.Mine after 5000 rpm,the turbo seems to run out of puff and can feel the hesistation to go pass 6000 rpm.
I reckon that aftermarket turbos are slightly bigger in size and they are designed to give more air flow(mass) at a give psi when compare to our factory turbo.Bigger turbo also mean turbo lag.Ball and roller bearing comes in to minimize the lag.
Comment welcome.
I reckon that aftermarket turbos are slightly bigger in size and they are designed to give more air flow(mass) at a give psi when compare to our factory turbo.Bigger turbo also mean turbo lag.Ball and roller bearing comes in to minimize the lag.
Comment welcome.
#10
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The IHI STI Version 3 turbocharger details:
Turbo Spec. : VF 24
Serial No. : RHF5 05-451 E
This turbocharger is good for 350bhp with upgred wastegate actuator.Check out OWEN Developement UK. They would be able to help you guys when comes to Turbocharger.
He can even upgred your turbocharger. Errrr.. don't have his number with me right now.
Turbo Spec. : VF 24
Serial No. : RHF5 05-451 E
This turbocharger is good for 350bhp with upgred wastegate actuator.Check out OWEN Developement UK. They would be able to help you guys when comes to Turbocharger.
He can even upgred your turbocharger. Errrr.. don't have his number with me right now.
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