Twin or single scroll turbo ?
 

Hi guys, 50/50 on getting my Bug sti jdm converted to twinscroll, either that or bigger turbo what are the good and bad points with twin and single scroll turbos ?


cheers :thumb:

Anyone?

Twin scroll will spool a bit sooner than a single scroll, i.e. for a given size turbo, the twin scroll will have a wider power band over a single scroll.

yeah henrik i know they spool sooner thats why i am thinking of getting my bug converted :)

Hi there

As above Twin scroll will/can spool sooner/quicker than single scroll

Depends what twin scroll you are looking to get.


Jura

You will lose the burble & power delivery feels a bit more linear

yeah kas35rsti thats the down side of the twin scroll :( its just for the convertion + turbo i am looking about £2,500 yet for half that money i could buy i bigger turbo like the MDX321T billet

Holy crap, there has really been some inflation in turbo prices over the last couple of years, eh?

I had the older MD321T on my S202 JDM Bugeye, nice turbo. You can pickup TS conversion for £1200-£1500. Japperformance parts do good deals & also accept px.

MDX321T is a nice turbo, spools very early on a 2.0l with avcs plus sounds great.

We're run MDX321T and must admit great turbo and spool has been awesome,on yours spool will be better just due your heads are better than our has been on our wagon

About the prices,you can find sometimes good deals,but still don't know if this will worth in the end



Jura

How much cost new or used SC42 or SC46,LM420 or LM460,MDX321T Twin scroll ? I don't think you can buy those turbo under £1000

Conversion kit for twin scroll somewhere in region £600-£1000 without the turbo and you have this price


Jura

Think i am going to go for the MDX321T turbo next year :)

what does avcs mean Kas35rsti what turbo you running now ?


Jura what turbo do you think is better the MDX321T or Blouch Billet XTR from slowboy-racing

Both turbo will be good choice,as I said on your other thread Blouch and ScoobyClinc developed together XTR range(difference is in the exhaust housing,SC using usually smaller 7CM exhaust housing and Blouch using bigger 8CM/10CM exhaust housing)

I never drove and never tried SC42 on 2.0L STi and I can't comment on that


AVCS is something like on the Honda VTEC or Toyota VVT-i,usually helping to spool turbo

Here is good FAQ about the AVCS

http://www.wrxtuners.com/forums/f103/avcs-faq-28052/


Jura

Thanks Jura you have been a big help! getting the Blouch Billet XTR + AVCS fitted next year :)

You have on yours JDM STi AVCS already :thumb:


Jura

Kas is running gt35 rotated

not another turbo to chose from lol whats is that like in power, spool ect ?

Does it? the website you showed me says:

Which USDM WRX/STI models have this?

2006-2010 WRX
2004-2010 STIs

Mine is between 2001-2002 STI

Its for USDM there

UK/EUDM and JDM STi have AVCS already from V7,JDM WRX have too AVCS from bugeye onwards


Jura