Which turbo guys? - Subaru WRX Forum
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#1 Old 06-23-2010, 09:32 AM
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Which turbo guys?

VF52 with all the supporting mods. I have priced out a vf52 for about 1k. lowest I have seen so far.

or 18g td-05. A little cheaper, but supports more power apparently.
With supporting mods.

I am looking to get to about 300 to 350 awhp when said and done in my 08 wrx.

I know the vf is a direct fit.....is there anything else required for the 18g?
is the 18g even worth while for a few hundred less?

Thanks
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#2 Old 06-23-2010, 09:51 AM
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The 18g will be more work since it won't bolt right up to the top mount.

Personally, if I had an 08 and wanted 300-350 whp I would get a vf52.

I did gear blouch is making an lgt layout 20g though....

-Chris
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#3 Old 06-23-2010, 10:47 AM
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the VF52 can get you 300-320 maybe depending on dyno. if you want 350 you need something bigger. there are some direct bolt on companies but one i saw looks like a hack job. the AVO380 will get you what you want. its more money then the VF52 but gets you more! also direct fitment. $100 less you could look into Blouch 2.5XTR but you'll need a FMIC. lots of options here

Scott-2011 WRX 335HP 394TQ 93 VF52!
http://www.wrxtuners.com/forums/f121/2011-wrx-build-31226/
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#4 Old 06-23-2010, 02:19 PM
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I agree with Synolimit. The AVO380 is what I would go for as well. I went with the VF52 myself as an impulse buy because it was cheaper. I keep thinking I should have went for the AVO.
That being said, BNR now makes direct bolt on turbos for the 08+ WRX and Legacy GT by using the VF40 turbo housing.
Below is a quote from the advertisement on their page. You may also want to check out the various BNR threads on the Legacy forums as they are just getting them into their cars now.

"BNR Supercars offers 5 turbochargers for your Subaru. Everything is 100% bolt up with no fabrication required!


•EVO 16G compressor wheel/TD05H turbine wheel (max-rated at 300 WHP)
•18G comrpessor wheel/TD05H turbine wheel (max-rated at 335 AWHP so far!)
•20G compressor wheel/TD05H (max-rated at 384.9 AWHP so far!)
•20G compressor wheel/TD06 11-blade (max-rated at 440 AWHP)
•BNR/HTA 68-TD05H (max-rated at an estimated 420 AWHP)"

Check out their site at bnrsupercars.com

Fabio
2008 VF52 WRX Opensource Magnus Motorsports Stage 3 Tune
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#5 Old 06-23-2010, 03:08 PM
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#6 Old 06-23-2010, 04:32 PM
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No way in hell I would pay almost 2 grand for the avo... Barely bigger than the 52 to boot.

They claim hella spool but from their site

"We saw 16psi of boost at 3300rpms. Now, this is not due to the turbo alone, of course, as there is a full set of engine modifications to support this turbo."

On my vf52 I hit 19 psi at 3300 rpm's, 21 by 3500.

To each their own though.

-Chris
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#7 Old 06-23-2010, 06:03 PM
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$1800 is a lot but your ass hurts if you think a VF52 can come anywhere close to a AVO380 out put. ralliteks stage 3 puts out 375HP 440TQ on E85 and 22psi. and all it comes with is the turbo, fuel pump, injectors, TMIC, intake, and not needed inlet tube. yes it has TBE but no headers, no EWG, ect. the most ive seen a VF52 do is 320-330hp. theres a good 50hp difference if you did both on the same dyno with same parts. 22psi is also conservative. push it to 24-25psi on E85 and ill bet it breaks 400HP.

Scott-2011 WRX 335HP 394TQ 93 VF52!
http://www.wrxtuners.com/forums/f121/2011-wrx-build-31226/
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#8 Old 06-23-2010, 07:19 PM
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There's also something to be said for the top end, not just the spool at 3300 RPM. At 3300 RPM my stock turbo feels pretty good at stage 2. Go much past 5000 RPM and the story changes. It feels like you took your foot half-way off the gas and are casually getting to redline. 16 psi is decent at 3300 RPM, but where does it end at the top end compared to the VF52. That's where I'd like to compare, because the satisfaction of having your power consistently increase is what you're paying for.
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#9 Old 06-23-2010, 07:46 PM
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Thanks all for the input....if i want to be a bit more reserved I will go with a 52....but I am really looking into that td-05 20g....interesting. There are some good debates on the link you posted opera.....good stuff...thanks
now off to research more.
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#10 Old 06-23-2010, 07:48 PM
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at what point do I need to begin to worry about internals and tranny?
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#11 Old 06-23-2010, 08:48 PM
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Quote:
Originally Posted by Hondafan View Post
There's also something to be said for the top end, not just the spool at 3300 RPM. At 3300 RPM my stock turbo feels pretty good at stage 2. Go much past 5000 RPM and the story changes. It feels like you took your foot half-way off the gas and are casually getting to redline. 16 psi is decent at 3300 RPM, but where does it end at the top end compared to the VF52. That's where I'd like to compare, because the satisfaction of having your power consistently increase is what you're paying for.
well said! i make 19.5psi right now but have to drop to 14.5 above like 4500rpm. the VF52 just doesnt have top end power. now i do need fuel injectors so the VF52 might push more at redline but not much.

the VF52 only flows 36 or 38lbs/min. the AVO is 44lbs/min. that will surely push more PSI at redline.

Scott-2011 WRX 335HP 394TQ 93 VF52!
http://www.wrxtuners.com/forums/f121/2011-wrx-build-31226/
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#12 Old 06-23-2010, 08:51 PM
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Check out Boost Addict's page and he did a lot of research for these transmissions on what they can handle. He's pushing well over 300, and I don't remember his current output because he changed it recently, but he was pushing in the range of 350 for a while on the stock transmission. It's about the torque more than HP because a low torque curve is what puts the most strain on the transmission.
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#13 Old 06-23-2010, 08:55 PM
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Quote:
Originally Posted by sexysilvrwrx View Post
at what point do I need to begin to worry about internals and tranny?
ooo no one really knows. no one has really done it. boostaddict on here made like 380/380 and his motor blew one of the ringlands on one of the cylinders. now i dont know for sure why it blew, i cant remember what he said or if they found out. it could have been one of his aftermarket injectors might have gave out so thats not the motors fault. also i dont know what cylinder it was. i hear a lot the number 4 cylinder gets lower fuel with the stock fuel rail set up. so if you get an after market fuel rail set up you could be making it safer. also the tranny being a LGT 5 speed ive heard 400TQ is right around the mark because thats what the LGT guys are doing and if driven right then its ok.

Scott-2011 WRX 335HP 394TQ 93 VF52!
http://www.wrxtuners.com/forums/f121/2011-wrx-build-31226/
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#14 Old 06-23-2010, 10:57 PM
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Still, I'd spend $1200 on the new blouch 18 or 20g and spend the extra 700 elsewhere.

Should be coming out soon

-Chris
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#15 Old 06-23-2010, 11:12 PM
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pretty good price but the pics show a need for a FMIC no?

Scott-2011 WRX 335HP 394TQ 93 VF52!
http://www.wrxtuners.com/forums/f121/2011-wrx-build-31226/
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