TD06-20G vs TD05-20G on a V7 STI

[Blake7]

Can anyone shed any light on how they both perform, compares to the VF30, likes/dislikes etc? Can anyone source one for me?

[Pappu1]

sup bro...

td06 has mo lag but got more top end power.

05-20g is closer to da vf30 but bit more go in it.

hmmm...if ur spending get the 06 and enjoy the huge rush!! ;D

[Koom]

 pappu said:

td06 has mo lag but got more top end power.

More lag? or a higher boost threshold?

i.e. is it slower to return to boost after a gearchange, or does it take more revs to make the boost in the first place?

[Blake7]

Ok. Taking into consideration a <1k budget, what would you go for? Street, bolt on.

[funkytown]

 Blake7']

Ok. Taking into consideration a <1k budget, what would you go for? Street, bolt on.

what is the rest of you build?

forged, injectors, intercooler type, ecu, braking set up to contain it, suspension setup to keep it on the road?

[quote name='pappu said:

td06 has mo lag but got more top end power.

/quote]

More lag? or a higher boost threshold?

i.e. is it slower to return to boost after a gearchange, or does it take more revs to make the boost in the first place?

tehehe you on the rag tonight koom?

[Blake7]

Then you tune it for me pappu ;D

[Blake7]

not forged anymore than factory, v8 sti tmic, ecutek, factory brembos, suspension sorted.

[Koom]

 funkytown']

[quote name='pappu said:

td06 has mo lag but got more top end power.

/quote]

More lag? or a higher boost threshold?

i.e. is it slower to return to boost after a gearchange, or does it take more revs to make the boost in the first place?

tehehe you on the rag tonight koom?

If a few Steiny Pure's, plus doing some contract work is known as "the rag" then yeah

Also multi tasking and reading the internet and raging at how dumb (i.e. the first person to answer is taken as gospel) the (mostly) American forum public are is making my medulla oblonggata swell and that makes me ongry. Maybe the chick at the gym was right and I should watch my high blood pressure and stress levels. I shake my fist at that thought though.

[Simon C]

Both of them outflow the VF30 by a large margin, so you can make a lot more power. The TD06 will spool slower, and I don't think you'd make full use out of it on the setup you've described. The TD05 would be my pick, I'd imagine it'd spool up similarly or slightly slower to the VF30.

There are lots of cheap made-in-China turbos on TradeMe at the moment. More likely to crap out on you. If you're into spending money, you could go with a well made off-the-shelf like a Trust ARMS M7760 or an American built unit from Blouch or Forced Performance. I think Blouch make a variant now which has a lighter billet compressor wheel. All of these can be found second hand via the NASIOC forums, budget around $150USD shipping via USPS (it's how I got my GReddy, but mine's a TD0518G, which I love). Another alternative is to give Steve Murch at Motorsport Engineering a call and see what he can sort out for you, may well work out cheaper.

[Guest]

I have only seen one td06 20g on a 2.0.

It was slow to spool and a high boost threshold Im not a big fan of them on a 2.0

TD05-20g 7cm is a better choice for a daily. (They do seem to be a fickle turbo, some make good power others not)

All dynos are diferent but..

Probably make about 250kw atw (if its a good one) versus a vf30 230kw

[Pappu1]

for the street the td05-20g will be good as it has less lag than a td06-20g

i had a few drives/rides in a td06-20g in 2.0litre wrx and while it had lag - only kicked in round 5k rpm it had a massive massive top end..

just depends if ur willing to live with the loss of low end ..

hmmm come to think of it..i wud also agree on the td05-20g as it is better all around option.....

;D that td06-20g has some real hard top end tho...

[99GTB]

I think of a high boost threshold as a form of fuel saving and gives you something to look forward to, although my set-up might defy physics somewhat if I can get it right.

I haven't felt what a td05-20g is like, but have driven a mates td06-20g 2L and I wouldn't complain, it all depends how you want your power delivered over the rpm range.

IE whether you want a decent kick and top end, or want slightly less power on tap sooner.

[T.Rev]

Isnt the simple answer that a mitsi smokes subies so get one...

I nearly posted a similar post last nite when mulling over the merits iof getting a TDO5 16G for mine rather than a VF 30 or 34...but I decided that the Italian red was thinking and not me...and I mean wine.

Interestingly enough Steve M was keen for me to think about reconditioning the VF 28 but I dont think i will.

[Guest]

The problem with the 20g wheel is it makes its best power / flow at a PR of 2.2

But for a standard sti ej20 you really want to be running a PR of 2.6 and thats right on the edges of the compressor map.

If your going to run 18-20psi they both will make about the same power, but the tdo5 will have 10x the mid range.

[Blake7]

PR is controlled by boost pressure (pressure ratio)? Yeah was thinking around 20psi, would you agree pappu?

Guess the TD05 is what I'll be fitting then just need to find one now. I'm currently hitting 22psi dropping it to 16psi on the VF30.

[Guest]

yep pressure ratio = boost + about 1 bar (if u live at sea level)

Do you have a dyno print out of your car ?

[Simon C]

Best thing is to learn how to read and plot engine characteristics on turbo compressor maps. That'll clear up a lot of the confusion.

[Blake7]

Anyone know what these are like? http://www.drivenperformance.co.nz/scripts/prodView.asp?idproduct=1473

Are they chinese copies?

[nt_a_foz]

 Blake7 said:

Anyone know what these are like? http://www.drivenperformance.co.nz/scripts/prodView.asp?idproduct=1473

Are they chinese copies?

chinese....

[sultan]

to be honest, the vf30 sounds like the perfect match for your car. you're going to need to do a bit more work than change the turbo alone, to get any actual performance gains

[Guest]

what about a vf34? to expensive ?

[Guest]

The difference between a vf30 and vf34 is very small. Not worth doing.

Avon was my favorite on blakes 7

[Blake7]

I think swapping to a td05-20, walbro and a reflash will be in the cards. Thinking about headers as well but loving the boxer sound too much at present..

[Simon C]

VF30/34 both run out of puff around 6500RPM and power noticeably falls off, so I disagree about them being the perfect match. Upgrade your injectors, fuel pump, fit a electronic boost controller, new turbo, and ECU remap. 250kw of fast spooling torque.

[Guest]

It depends on what boost you run - run 17/18psi on a vf34 and it will not fall off