Autocross turbo selection
The USDM VIII 16G turbo fitted as it was, from the factory, with the 9.8cm hotside, is pretty much, bang for the buck, as good as it gets for auto-crossing. Oh yeah sure, the JDM VIII RS turbo which also had the 9.8cm housing was a bit better due to its being fitted with the titanium turbine wheel. But, the even the earlier TME VI turbo was compromised a bit by the slower spooling 10.5cm housing. For spoolup the 9.8 housing is better than the 10.5 obviously. The looser 10.5 spools slower but frees up about 10 WHP on the topend.
The TME turbo was just all around more responsive than the 9.8 from the TI impeller. The Evo was a lot of fun to drive with the TME.
The turbo you DO want to get is one from japan...
Evo 9RS turbocharger. It was an Evo9 turbo but with a Titanium and Magnesium alloy wheels. Spooled super quick and made similar, if not a TOUCH more then the Standard Evo9 or even the Evo6 TME turbos..
TD05HRA-16G6mC-10.5T
Evo 9RS turbocharger. It was an Evo9 turbo but with a Titanium and Magnesium alloy wheels. Spooled super quick and made similar, if not a TOUCH more then the Standard Evo9 or even the Evo6 TME turbos..
TD05HRA-16G6mC-10.5T
My non-USDM, VIII RS came with the JDM RS TiAl turbo which is pretty much like your TME turbo. Both turbos share the same compressor side. Both turbos are likewise configured with a Titanium-Aluminide turbine wheel. The only significant difference is that the TME turbo has a 10.5cm turbine housing, whereas the JDM VIII RS was fitted with a 9.8 cm turbine.housing. Spoolwise, the 9.8 is worth about 300 RPM vs the 10.5, all else remaing equal.
You arent gonna argue that the same 16G will spool the same regardless of the turbine housing that its configured with are you?
Last edited by sparky; Apr 18, 2013 at 08:56 PM.
I, for one don't buy into the theory that it was necessarily faster spooling than an VIII RS turbo, or a TME 10.5.
Last edited by sparky; Apr 18, 2013 at 11:54 PM.
Evolved Member
Joined: Oct 2009
Posts: 926
Likes: 15
From: UAE
a few years back I did some extensive autox tests using 3 turbos on the same autox circuit, turbos tested were VI TME (16g/10.5), JDM IX RS (16G/10.5) & an FP White, boost at around 22psi. The car constantly made better track times with the VI TME installed than the other 2 turbos, so, decided to go with it when the actual race took place.
An interesting choice for autox might be the HKS GTII, which is suppose to spool faster & have more high end power than a stock turbo.
An interesting choice for autox might be the HKS GTII, which is suppose to spool faster & have more high end power than a stock turbo.
Last edited by foxbat; Apr 19, 2013 at 03:02 PM.
Or if you are really set on changing the turbo, look for a TME 6.5. It has the same 10.5 hotside housing, but with a titanium impeller.
I autocrossed my evo with the TME, and you can get usable boost 200-300 rpm earlier than with the stock 9.8 turbo. With that turbo, I could hit full boost around 2500 rpm. I later installed a BBK full, and with that turbo, I could get full boost by 3100 rpm.
The bbk was a much stronger turbo (obviously), but the TME was more fun to drive because of the almost instantaneous boost when getting on the throttle. The TME was much easier to live with when driving in heavy traffic too.
But like others have already said, stick with the stock turbo if you autox. Changing the turbo bumps you to SM which is a very expensive class to run.
I autocrossed my evo with the TME, and you can get usable boost 200-300 rpm earlier than with the stock 9.8 turbo. With that turbo, I could hit full boost around 2500 rpm. I later installed a BBK full, and with that turbo, I could get full boost by 3100 rpm.
The bbk was a much stronger turbo (obviously), but the TME was more fun to drive because of the almost instantaneous boost when getting on the throttle. The TME was much easier to live with when driving in heavy traffic too.
But like others have already said, stick with the stock turbo if you autox. Changing the turbo bumps you to SM which is a very expensive class to run.
my o.02c
Evolved Member
Joined: May 2010
Posts: 500
Likes: 4
From: Australia
Or if you are really set on changing the turbo, look for a TME 6.5. It has the same 10.5 hotside housing, but with a titanium impeller.
I autocrossed my evo with the TME, and you can get usable boost 200-300 rpm earlier than with the stock 9.8 turbo. With that turbo, I could hit full boost around 2500 rpm. I later installed a BBK full, and with that turbo, I could get full boost by 3100 rpm.
The bbk was a much stronger turbo (obviously), but the TME was more fun to drive because of the almost instantaneous boost when getting on the throttle. The TME was much easier to live with when driving in heavy traffic too.
But like others have already said, stick with the stock turbo if you autox. Changing the turbo bumps you to SM which is a very expensive class to run.
I autocrossed my evo with the TME, and you can get usable boost 200-300 rpm earlier than with the stock 9.8 turbo. With that turbo, I could hit full boost around 2500 rpm. I later installed a BBK full, and with that turbo, I could get full boost by 3100 rpm.
The bbk was a much stronger turbo (obviously), but the TME was more fun to drive because of the almost instantaneous boost when getting on the throttle. The TME was much easier to live with when driving in heavy traffic too.
But like others have already said, stick with the stock turbo if you autox. Changing the turbo bumps you to SM which is a very expensive class to run.
This 9RS turbo is more hoopla than results. On paper it looks good but as a practical matter they couldn't sustain boost levels over 22-23# w/o self-destructing. So, what good is a turbo thst cant boost over 22 PSI anyway? How can you advocate such an overpriced paperweight?
I, for one don't buy into the theory that it was necessarily faster spooling than an VIII RS turbo, or a TME 10.5.
I, for one don't buy into the theory that it was necessarily faster spooling than an VIII RS turbo, or a TME 10.5.
Or if you are really set on changing the turbo, look for a TME 6.5. It has the same 10.5 hotside housing, but with a titanium impeller.
I autocrossed my evo with the TME, and you can get usable boost 200-300 rpm earlier than with the stock 9.8 turbo. With that turbo, I could hit full boost around 2500 rpm. I later installed a BBK full, and with that turbo, I could get full boost by 3100 rpm.
I autocrossed my evo with the TME, and you can get usable boost 200-300 rpm earlier than with the stock 9.8 turbo. With that turbo, I could hit full boost around 2500 rpm. I later installed a BBK full, and with that turbo, I could get full boost by 3100 rpm.
Evo 8 with 10.5 on a non-mivec 2L hits 25 psi at approximately 3400-3500 (personally i hit 30 pounds at 3500-3600)
Evo 8 with 9.8 on a non-mivec 2L hits 25 psi at approximately 3200-3300
BBK Full on non-mivec 2L hits 25 psi at approximately 3700-3900
Last edited by mean4g63; Apr 20, 2013 at 07:17 AM.
BBK Full - full boost by 3100rpm? What displacement motor and what was full boost?
There's a few run here for years at 24-26 psi peak tapering to 22psi or so up top. We have plenty of experience with these turbos here, I ran one myself, you US guys seem to be scared of them because they can be fragile if you abuse them. They work very well, very fast transient response due to the lighter rotating assembly and spool up very early too.
There's a few run here for years at 24-26 psi peak tapering to 22psi or so up top. We have plenty of experience with these turbos here, I ran one myself, you US guys seem to be scared of them because they can be fragile if you abuse them. They work very well, very fast transient response due to the lighter rotating assembly and spool up very early too.
The 01570 series gave that turbo the bad reputation that the 01571 was supposed to fix, but its name wasn't cleared due to paranoia & the bad rap stuck, unfortunately..
Evolved Member
Joined: May 2010
Posts: 500
Likes: 4
From: Australia
Yes the 570 was fragile and gave them a bad rep here too. However a few of us have run the 571 for quite some time with zero failures I am aware of. 24psi peak 22psi up top is pretty normal on pump fuel. Not keen to push a stock turbo with stock thrust bearings past that for reliability and more than 22psi up top the outlet temps are getting up there too so for road racing style, autocross etc where you work the car hard, they do just fine. If you want to tune for 30 peak I wouldn't do it.
For autocross I never see myself using peak boost. My car was tuned on E-85 with the Evo 8 turbo 10.5 and I had a peak boost of 27 psi. The closest I ever got was 20 psi. I am sure with experience I would have been able to use peak boost but it seems highly unlikely that I would have been able to do it on street tires.
For autocross I never see myself using peak boost. My car was tuned on E-85 with the Evo 8 turbo 10.5 and I had a peak boost of 27 psi. The closest I ever got was 20 psi. I am sure with experience I would have been able to use peak boost but it seems highly unlikely that I would have been able to do it on street tires.
True that, otherwise you just have a awd drift machine lol
Tuning philosophy? Don't you think that maybe the price has something to do with it as well? The thing is only capable of producing, at most, 10-15WHP more than a USDM VIII/10.5 turbo. So, stricly on a HP/$ basis it is an over-engineered underachiever.
Last edited by sparky; Apr 21, 2013 at 04:37 AM.