polly_20

Soo...Guy ( Fastboyslim) said he will marry me once we hit 400 bhp . My question to you guys is; what is the fastest way to 400 bhp on a 2005 sti uk? The car is full prodrive powerpack with a TSL motorsport remap to 337 bhp.

scatty

iTrader: (1)

new turbo, bigger injectors....fmic, but you should get to 400 without....just

fastboyslim

iTrader: (2)

Remind her that the Prodrive exhaust will restrict power to about 360-380bhp so a Milltek system needs to be added to the above!

mantazini

iTrader: (25)

Get her that one and u'll have a very cute bride ...

P1 Daveyboy

I thought of FB Tuning
Rich would do that work quick and map to prove it

Dave

jura11

iTrader: (7)

I would say(he have all ready MD321H which is turbo which will made 400BHP),650cc Injectors will be good,but 550cc will be still OK with FPR setup(but will be maxed at this BHP),3" exhaust will need also,FMIC,3-port boost solenoid and remap.



Jura

harvey

iTrader: (48)

Unfortunately the pink injectors max out at 370-380 bhp so to be sure of 400 bhp you do need 650cc injectors and a 400 bhp turbo and not all 321H are 400 bhp turbos.
If you can lower your sights to 380 bhp it is easier and cheaper. It means you have more money for your wedding.
Max out the pink injectors. Your choice of turbo is greater including a QUALITY TD05-20G, the MD321H or similar. Full decat 3" quality exhaust is preferable as it takes care of project creep in the future, with 3" downpipe. However, a good 2.5 system will do the job but I have never been impressed with Prodrive exhaust systems which are designed for rally cars that often don't make a lot more than 330 bhp. Consider what you are doing about headers and uppipe. Ported or tubular. Put it all together. Remap and Bob's your uncle. You now have a very fast and responsive cross country road car.

Moley

iTrader: (9)

Harvey - would there be much difference in lag between the 20G and the 321T?

b16msu265

iTrader: (6)

321t has hardly no lag and the 20g has plenty of lag trust me. 20g are good on 2.5 and have a quicker spool.
Sc40 or 321t or is it h lol
Simon JGM got a nice figure from the 20g 385hp but he told me to get a Md or sc.

Moley

iTrader: (9)

Which SC series is best suited for 380-400?

b16msu265

iTrader: (6)

Sc 40 is a 20g billet defo get u the power with out any problems
Sc 38 is a 18g billet and that should get u 380ish there is only £50 difference in price

jura11

iTrader: (7)

If its no money object SC46 will be overall winner.

SC40/SC42 will be good choice for fast spooling turbo,which will make 380-420bhp



Jura

b16msu265

iTrader: (6)

Fastboyslim u best get that ring ready for Polly_20
Your goin for a good exhaust there.

Moley

iTrader: (9)

Send a pm to Anger, he has a 3" turbo back Miltek for sale at the moment (i think he wants £350, which is a VERY good price for a great exhaust)

a5h

iTrader: (3)

Good luck Polly i how you get the ring(I mean BHP) you want.

fastboyslim

iTrader: (2)

It would be Rich doing the work for me Dave, got to support our local wrench pilot!

fastboyslim

iTrader: (2)

Jura, the MD321H i sold on. The guy i bought it from told me it would not need to be serviced and it was in good condition. When the turbo arrived it needed an overhaul so that £300 plus the £900 i paid for it i could have just bought a new one. I sold it on so will be looking at a new item.

fastboyslim

iTrader: (2)

Cheers for the reply Harvey, 380bhp is also not a train smash. Ported manifold with a tapered up pipe was my weapon of choice. I would much rather have a 380bhp car spooling quick than a 400bhp car with lag.

Rob Day

iTrader: (78)

I started a simular link sometime ago, and for me its gone like this:

Standard pink inj with FPR
GT30 with 3" samco Intake
H&S Headers and up pipe
Walbro 255
Cold AIr Intake with feed
3" Miltek
Standard TMIC**

However the car is currently on a Organic 2.5 Clutch kit, and although it holds power it doesnt enjoy standing starts with a few revs, also the NPS has failed which tells my ECU to hold back ;( So with a new clutch sourced this is the continuation:

5 Paddle Clutch Kit (install Monday)
NPS (install Monday)
20% Meth map (next week hopefully)
FMIC now fitted (as the OEM STI TMIC"" is on the limit)
Brakes will now need further attention to stop it all


Here is the thrad I started https://www.scoobynet.com/scoobynet-...400bhp+Rob+Day

Rob

fastboyslim

iTrader: (2)

Mandeep, are you running a T?

jura11

iTrader: (7)

SC-range is good,but hardly you will find used one.

If you find used 20G,which is good turbo for for 380-390bhp(with methanol maybe 400bhp+)

Again good luck and hopefully you will have your target and Polly will have weeding ring


Jura

b16msu265

iTrader: (6)

Easy Guy how u been? No the motor is running an Andy Forest TD05 20g with a new uprated Forge actuator which I'm selling to anyone with a 2.5
You got a type uk 2.0 like mine so I would stay away from them. Sc40 is what I might get or the Md 321t
C u all on the 17th

harvey

iTrader: (48)

Yes Moley. Compared to my 20G for the 2 litre the MD321T on a 2 litre is a lag monster and that is hardly surprising as it is a bigger turbo, however, the SC46 which is very comparable to the 321T spools much quicker than the 321T.
In the SC range so far I would go for the SC46 but I am not particularly impressed with the turbos below that level and have no experience of the SC50 or 54.

harvey

iTrader: (48)

I don't think my 2 litre 20G should be compared with other 2 litre 20Gs which may be laggy. It comes with ported exhaust inlet, uprated actuator and 12 months warranty all for £850.
While I say it is a 380 bhp turbo there are plenty people on here report 400-412 bhp on petrol but who knows what the accuracy of the rolling roads is.
Just to clarify, I do a range of 8 uppipes. 2 of these are popularly referred to as tapered and these are slip jointed for use with the GT Spec type tubular headers as supplied by RCMS, Lateral, myself and others.
These are 3 bolt uppipes.
There are then 6 2 bolt uppipes for use with original Subaru headers and some tubular header sets. These are not tapered in the same way as the 3 bolts but designed specifically for use with ported header sets or OE cast headers and I select the appropriate uppipe for the turbo and car spec I am supplying to. They too are slip jointed and come DEI heat wrapped with five new Subaru studs. I consider the slip joint is important because it relieves stress on the headers, particularly the tubular headers and therefore reduces the possibility of splitting at the collector.
At 380 bhp and above the spool from ported original headers with matched uppipe will be better than from tubular headers of the 3 bolt design but once you get beyond 400 bhp the advantages in increased torque from the 3 bolt headers and special uppipe are quite marked.
Comparing the special uppipe with the single piece uppipe supplied some customers have reported 500 rpm improvement in spool. First hand we regularly see improvement in spool of 350 rpm.
I hope all this information helps and I will clarify anything as required.

b16msu265

iTrader: (6)

Sc46 a b b turbo but I thought it was a rotated turbo? Harvey what other turbos spool early and hold the power and torque?

harvey

iTrader: (48)

The SC46 outspools the MD321T on all 2 litres that I have had experience of.
The SC46 is a direct fit turbo.
The 18G is a very quick spooling turbo and we even do a 2.5 litre version of it for people looking for more power with standard internals on the chocolate 2.5.
We also have at least 2 versions of the 20G for 2 litre and 2.5 litre because there is such a big difference between the two engine requirements that one turbo cannot reasonably do the lot. Providing the turbo is properly specced it is important that the overall modifications are complimentary and mapping by someone that is happy to spend time down in the spool area.
On one of my own cars I have one of my 20Gs spooling at 3140-3160 rpm and 1 bar as measured by the laptop. 4th Gear level road, 5 speed box. Typically on one of my 20Gs on a 5 speed box it spools to 1 bar by 3300 rpm in 4th. If it does not it warrants investigation. Headers, uppipe, thermal management, mapping, even induction perhaps.

Stevesbluewrx

iTrader: (4)

Harvey, are you talking of the OLD MD321T or the new roller bearing version?

My MD321T hits max boost on low boost set up (1.5 bar) by 3,800 RPM. I love my T I have to admit. Tempted to go new roller bearing set up.

Personally whilst we are on the subject that Harvey is involved with. I'd suggest going for the Hybrid FMIC. The STi TMIC will max out at say 380bhp in some cases.

Mine maxed out at 410bhp.

Turbo wise i like the MD321 series so a H or even a T if your thinking of going bigger power later.

Also , 550's with FPR will max out at 400 as mine did as they ran 96% duty. So went for 850cc injectors (wouldn't suggest this so 650cc will be fine).

Steve

fastboyslim

iTrader: (2)

Cheers mate!

polly_20

Wooooow!!! Awesome response! Thank you All :*

Rob Day

iTrader: (78)

Well I have got my car back after a few changes have been made, and Andrew Carr checked the map for me and its running fine at the moment, estimated somewhere 400bhp, so im booked in for a 20% meth mix on the 18th July

This will be the last thng I will be doing to this car bar ongoing maintenace as i'll be stressing that the engine is going to cough its guts up LOL.

So what power should I expect to see from 20% meth guys?

Standard STI UK 2.0 Engine
GT30 Standard position
76mm Samco Intake
Fog cold air feed to HKS Cone Intake
SARD FPR
Front Mount Intercooler
Walbro 255
3 Port
3" Miltek complete decat
Hayward and Scott wrapped Headers & Up-pipe
Uprated competition 5 Paddle clutch kit

Rob