From a personal point of view i would say yes,im on the old SC42 Billet and running a standard JDM version 8 2.0ltr engine at the minute with every conceivable supporting mod.

When being mapped there was deffinitely more to be had from the turbo,but the engine was at the upper limit of its safety threshold and although it didnt complain and kept taking timing/boost,it would have been suicidal to push further.

And as kev has already stated the new SC42+ is aimed at people wanting a little bit more than the older one could produce,so it should be absolutely ballistic on your 2.1 with martyn mapping it,and as long as all supporting mods are present of course.

 

must get an SC42 Twin Scroll soon

 

Yes you must. I can confirm it's a great turbo👍

 

Hi,

42 Billet + would be my choice on a 2.1 why add extra lag for just a few more ponies on a sheet of paper you will probably never use.

Race cars I can understand but fast road cars, I have never in 35 years in the trade ever understood the quest for huge figures on a road car apart from bragging rights.

Keeps us busy though as very few people listen, it is so refreshing when some one asks for 350 BHP or 450 BHP and not the statement..............

"right I want 650 maybe 700 BHP",

what car have you got sir ??

" a UK saloon MY 2000 on a T plate",

This is gonna cost what’s your budget ?"

well I can get my hands on 2 maybe 3K and I am not to £500.00 sheets, just want it right".



Many times we have asked what sort of power the car is running at the moment, answer......

"375 to 400 BHP",

have you a dyno printout sir as I find it difficult to believe that on a TD04 ?

"No but it must be as it rips my dads Lexus apart and that’s 450 BHP".



Would sir like a free power run to see where we are actually starting from ?

"no thanks don’t trust dyno's and anyway I have to get off, running a bit late".

Sometimes we just have to give in......

Cheers
Kev

 

It's an occupational hazard for you Kev, suffering ignorant dimwits and serial bullsh!tters!

 

Cheers gents!!

My only therory was.....

I drive like miss daisy is in the back 90% of the time. My car is also my only car and a daily commuter.

My though with the sc46+ would cause additional lag but this would help in the majority of time due to typical driving.

Thanks for the knowledgeable replies, they're becoming a lot more far and few between.

 

Have just purchased a gt30 rotated kit and associated pipework/fittings from scoobyclinic aka kev
Now its a bit of a long trek from me to scoobyclinic for fitting so am using a local guy and instead of just selling me the stuff and saying good luck i have just recieved a email on a Sunday from kev with a rundown of what goes where down to the last nut and bolt
very rare to find someone willing to go beyond selling you the stuff and actually be willing on their day off to send you details of how to fit the stuff
in this day and age when a return phone call is the best you can hope for from some companies this has come as a welcome surprise
way to go the clinic

 

Hi,

you are very welcome sir, we aim to follow up all our products, there is nothing worse than buying something and feeling all alone.

Please explain to your mechanic he is more than welcome to call us or e mail us for advice should he need any,

Many thanks for your business.

cheers
kev

 

Quick question

Just out of interest on a sc38 what sort of rpm should I be looking at when hitting full boost, I have a sc40 and not seeing full boost till 4000/4200 rpm which is a little high for for me. Can give a list of supporting mods if needed but a general figure is fine.

Cheers

 

spool is mega dependant on setup mate, i suspect its something to do with that.

 

Well I have just got my hands on a sc38 which is been mapped in next week I swapped as the 40 was coming in so late was wondering when I should be hitting full boost on the 38..,

Mods :

Harvey headers + uppipe
Blitz exhaust system + bellmouth dp
740 Inj
Rcm induction
Hdi fmic
Apexi ecu
Lateral turbo intake pipe

Think there the main bits the sub is a 99 type r.

Cheers

 

^^^ anyone ^^^ just after a general figure, I no all subs react diffrent but there must be approx figures?

 

After decided not to get a sc42 we mapped with meth .
Sc40 billet with 20% meth 431.4 bhp 385ft lb 2.0 litre

 

Today I have an SC46 billet on my 2.0L fully built block with stock AVCS heads and have exactly 400WHP at 1.6bar with E85.
But I have complete set of twisted pipes that are not used.
So the question is what a billet GT30R 0.82 will do for me?
It is a 100% Track car so not a street car. (Time attack)

Any suggestions?

 

Depends on the rest of the setup but 600 FWHP should be achievable in my experience.

 

Thank you for replay.
Ok, sounds good.

CP Pistons
Eagle rods
ACL bearings
ARP headstuds
FMIC
Tomei Equal length header
APS 3,5" exhaust
1000cc injectors
Autronic SM4 PnP Ecu

As said earlier, stock -03 sti heads and camshafts.
Does the heads flow enough for about 500whp?

What exhaust housing is to recommend 0.63 or 0.82?

 

That's a decent result mate.
On its best run mine with the SC42 did 439/385 on V-Power alone! Last run it did 427 and Simon has suggested to try meth but so far I've resisted haha! .
To the chap asking about "late boost" I doubt you'll find much to hit full boost much before 3900-4000rpm on a 2.0. Even the original vf35's don't do much better so unless you're going smaller I doubt you'll see much difference.

 

I'd imagine on a 2.0 all a GT30 will do is make it laggy as hell unless you're planning to go 2.35?

 

Ok, no i do not have any plans for 2,35.

 

I would say a 2.1 rotated setup is the minimum you could get away with using the GT30/0.63 on,and this combo does work really well and is a very popular choice for many.

I personally wouldnt try and run anything bigger than an SC42 on a 2.0ltr,and if its a track based car i would go smaller still for greater spool and response as im sure this would make an overall quicker car on track.

 

Meth is the way forward dude

 

Must agree with you on that one mate,mine gains 50bhp and 50ftlbs over the v-power only map and the difference on the road in terms of spool,response and overall performance is very very noticeable.

 

im still thinking of this set up for my daily driver 2.1 stroker blob with big port jdm avcs heads but im worried it will be laggy and i would be better off with a sc42 billet

 

It shouldnt be laggy if you have all the correct supporting mods present and its mapped properly mate.

i`ve seen quite a few graphs of GT30 Billet 0.63 housing turbo`s on 2.1 powered cars and 9 outa 10 of them were amazing.

i`ve also been a passenger in one and the word lag never entered my mind,it was extreme to say the least and frightened me to death(im not a good passenger lol).

Even an SC42 can be laggy on the wrong car matey,or on a car that does not have the proper mods to make it sing and dance.

A properly modded and mapped 2.1 powered car and a GT30 Billet 0.63 turbo is a fantastic combo that is hard to beat imho buddy.

 

Is it really that big differens in spool with the 2,1 vs 2,0?

 

Yes mate its massive with a turbo like a GT30,it may not sound like much but the extra .132?? or what ever it is over the 2.0ltr does make all the difference.

 

It's mental that only 5% more capacity - just 25cc extra per cylinder - can have such a profound effect to the airflow!

But hey, we all dig it.

 

I got a built 2.5 and was really tempted by the sc42 after all it's rave reviews. Anyway I went for an sc46 instead. Keeping my fingers crossed for 450bhp on vpower and hopefully a bit more with meth. But it's the torque I'm really looking forward to any ideas what to expect?

Joe

 

Hard to say joe as all cars behave differently even with identical parts fitted,but in my experience you only get out of something what you put into it.

If you fit top quality components you get top quality performance,if you fit ebay and macdonalds happy meal parts you get a poorly performing ticking time bomb.

The SC46 should perform out of its skin on a 2.5 with all supporting mods present,good luck matey i hope it all goes good for you.

 

Cheers pal, ive used good gear throughout my build so fingers crossed. Should make a nice road car I hope. Just a bit unsure weather to keep my rcm Venturi up pipe of go for a havey trick up pipe.