Twin scroll turbo upgrade MD321 billet or SC42 billet or LM420 billet?
03 February 2012, 09:49 PM
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Twin scroll turbo upgrade MD321 billet or SC42 billet or LM420 billet?
Hi people I have a JDM STI and want to upgrade the turbo but keep the std sti tmic with other supporting mods and hopefully make 400bhp maybe near 410bhp. Does anyone have some info on what turbo is better, spools up quick and gives good power levels these are the options MD321 billet, SC42 billet and LM420 billet? Any other info or suggestions welcome.
Cheers.
Cheers.
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03 February 2012, 11:31 PM
#8
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No one has done a back to back on the same car afaik, so I doubt you will get anything other than a subjective view.
From personal experience I can say the LM400 Billet will do 400bhp on the OEM JDM engine, tmic, turbo inlet pipe and airbox.
Injectors, exhaust, turbo, panel filter, remap and off you go for a potential 400bhp. Very cost effective upgrade.
From personal experience I can say the LM400 Billet will do 400bhp on the OEM JDM engine, tmic, turbo inlet pipe and airbox.
Injectors, exhaust, turbo, panel filter, remap and off you go for a potential 400bhp. Very cost effective upgrade.
04 February 2012, 12:14 AM
#9
I've got an SC42 Twinscroll 405bhp/385ltb however it was done on a brand new car so might be a little more now she's bed in a little better. I might be selling mine if your interested 
04 February 2012, 01:11 AM
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Hi rick, totally know what you are saying but I've already got all the other supporting mods like injectors, fuel pump, sfs intake hose. So buying just the turbo would be about £2k as I didnt want more lag and less response and getting a good fmic is an extra £1K. What fmic you think would not increase lag and still have same kind of response of a tmic?
04 February 2012, 01:19 AM
#12
No i've not seen any graph on Twin scroll MDX321T,on our has made single scroll MDX321T 490bhp with 20% methanol
About the intercooler,you can buy easily Japspeed or HDi GT2 which are proven,mainly don't increase so much lag and don't cost so much against Perrin,APS or others
Here is MDX321T on our 2.1
Jura
About the intercooler,you can buy easily Japspeed or HDi GT2 which are proven,mainly don't increase so much lag and don't cost so much against Perrin,APS or others
Here is MDX321T on our 2.1
Jura
04 February 2012, 01:23 AM
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No one has done a back to back on the same car afaik, so I doubt you will get anything other than a subjective view.
From personal experience I can say the LM400 Billet will do 400bhp on the OEM JDM engine, tmic, turbo inlet pipe and airbox.
Injectors, exhaust, turbo, panel filter, remap and off you go for a potential 400bhp. Very cost effective upgrade.
From personal experience I can say the LM400 Billet will do 400bhp on the OEM JDM engine, tmic, turbo inlet pipe and airbox.
Injectors, exhaust, turbo, panel filter, remap and off you go for a potential 400bhp. Very cost effective upgrade.
Hows the drivability of your car going with the fmic? You ever thought of running a meth mix to see how more power you could get?
04 February 2012, 02:03 AM
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No i've not seen any graph on Twin scroll MDX321T,on our has made single scroll MDX321T 490bhp with 20% methanol
About the intercooler,you can buy easily Japspeed or HDi GT2 which are proven,mainly don't increase so much lag and don't cost so much against Perrin,APS or others
Here is MDX321T on our 2.1
Jura
About the intercooler,you can buy easily Japspeed or HDi GT2 which are proven,mainly don't increase so much lag and don't cost so much against Perrin,APS or others
Here is MDX321T on our 2.1
Jura
Looks great but I'm only running a standard jdm sti 2.0lt block so dont think it'll make that power on mine but still good.
The fmic is looking like a good idea but I'll also have to buy an induction kit which is another £150 or £200 and maybe get bigger injectors to like 800cc so £480 +vat fmic £400 still about £1k so not sure how far I should go?
What an uprated tmic (like hyperflow tmic) or do they get alot of heat soak or are they not as good as std sti tmic? any info?
04 February 2012, 07:21 AM
#17
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Having sold a vast amount of SC turbo's over the last year or so, I can't tell how happy we are with them.
The SC42 single scroll is an awesome little turbo, so I personally wouldn't hesitate to buy a twin scroll version should I require one for a customer.
The SC42 single scroll is an awesome little turbo, so I personally wouldn't hesitate to buy a twin scroll version should I require one for a customer.
04 February 2012, 09:18 AM
#18
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As posts above Tazz.... everything is subjective from individuals opinions. 
Back to back is the only way to compare properly objectively.
They're all pretty much the same in reality.
If you start looking into the detail you may get even more confused.
The LM & MDX turbos (twin-entry) share the same exhaust housing. They both share the same manufacturer as in Turbo Dynamics.
The SC turbos are made by Blouch.
The LM and MDX can be single scroll or twin-entry.
The SC can be single scroll or twin scroll.
I have seen no evidence so far, to suggest that the either the LM/MDX twin-entry is any better or worse than a SC twin scroll.
The LM and MDX come with Zicotec coating on the exhaust housing and are made from extremely high quality iron.
I suspect you won't go wrong with any choice.
Driveability with my Hybrid GT2 FMIC is 100% fine mate. That FMIC was under £400 as well remember.
I nearly went the Meth route a couple of weeks back..... but decided it would only be to chase figures and is an utter pain in the **** to me, to do all this carrying meth around and measuring this and that. I might come back to it in the future though when I stop being so grumpy.
I would suspect mine would make circa 490bhp on meth, allowing for the 10% increase factor using 20% meth.
Back to back is the only way to compare properly objectively.
They're all pretty much the same in reality.
If you start looking into the detail you may get even more confused.
The LM & MDX turbos (twin-entry) share the same exhaust housing. They both share the same manufacturer as in Turbo Dynamics.
The SC turbos are made by Blouch.
The LM and MDX can be single scroll or twin-entry.
The SC can be single scroll or twin scroll.
I have seen no evidence so far, to suggest that the either the LM/MDX twin-entry is any better or worse than a SC twin scroll.
The LM and MDX come with Zicotec coating on the exhaust housing and are made from extremely high quality iron.
I suspect you won't go wrong with any choice.
Driveability with my Hybrid GT2 FMIC is 100% fine mate. That FMIC was under £400 as well remember.
I nearly went the Meth route a couple of weeks back..... but decided it would only be to chase figures and is an utter pain in the **** to me, to do all this carrying meth around and measuring this and that. I might come back to it in the future though when I stop being so grumpy.
I would suspect mine would make circa 490bhp on meth, allowing for the 10% increase factor using 20% meth.
04 February 2012, 11:15 AM
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Im glad someone posted this up as I was going to ask same question. I'm contemplating the md321 or sc42. Why not buy the Japspeed FMIC in the group buy deal £229?
04 February 2012, 01:07 PM
#21
Perhaps if Ian would lend me a turbo I could try it out and we can compare results. Might give him a tinkle and see what he says.
I am not sure what I would replace my turbo with but I really feel like trying the Borg Warner full race peak torque below 4000rpm thats just crazy.
04 February 2012, 03:38 PM
#22
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Immy,
Well according to the other results for your turbo, your current set-up is well under performing! Why don't you get the set-up sorted to suit and get the best out of what your turbo is supposed to be capable of...... surely that's better than changing turbos.
Well according to the other results for your turbo, your current set-up is well under performing! Why don't you get the set-up sorted to suit and get the best out of what your turbo is supposed to be capable of...... surely that's better than changing turbos.
04 February 2012, 04:19 PM
#23
Everyone else is using meth hence them having higher figures than me.
04 February 2012, 05:43 PM
#24
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Immy,
Sorry, I thought others had acheived 420-430 on VPower with Newage engines.
Einstein,
Why you only running 1.45bar..... crank the boost up and ditch the meth!
Sorry, I thought others had acheived 420-430 on VPower with Newage engines.
Einstein,
Why you only running 1.45bar..... crank the boost up and ditch the meth!
Last edited by Shaun; 04 February 2012 at 05:44 PM.
04 February 2012, 05:45 PM
#25
Ive been thinking of getting one for a while but dont want to go down the FMIC, CAIK route, I want to keep it looking as standard as possible but also get the best result from the turbo, Which is why i still havn`t bought one yet
Already have 358/357 so its a lot to cough up for another 40-60 bhp. Decisions decisions.....
04 February 2012, 07:06 PM
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I'd go for more than 400bhp, you'll soon be bored with a 40bhp step up in power. These cars come alive with 450bhp+ IMO.
Shaun, I've been away from the forum for a while - when did you jump on the FMIC bandwagon!?
Anders
Shaun, I've been away from the forum for a while - when did you jump on the FMIC bandwagon!?
Anders
04 February 2012, 08:13 PM
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What supporting mods, Injectors, FMIC, Induction kit?
Ive been thinking of getting one for a while but dont want to go down the FMIC, CAIK route, I want to keep it looking as standard as possible but also get the best result from the turbo, Which is why i still havn`t bought one yet
Already have 358/357 so its a lot to cough up for another 40-60 bhp. Decisions decisions.....
Ive been thinking of getting one for a while but dont want to go down the FMIC, CAIK route, I want to keep it looking as standard as possible but also get the best result from the turbo, Which is why i still havn`t bought one yet
Already have 358/357 so its a lot to cough up for another 40-60 bhp. Decisions decisions.....
Thats the same thing I wanted but everyone keeps telling me to go for a fmic
