Neilo

so not a WRX then.....

wrxseeker

iTrader: (1)

I know this is thread hijacking a bit but if you have the de-cat centre and say sports cat downpipes (eg STI PPP ones) on a WRX, do you have to fit the decat up pipe ??

Ie is there any problem with keeping the cat in the up pipe (obviously car would be mapped to suit) as I think I am right in saying that the STI has no cat in the up pipe ??

Neilo

the STI doesnt have a cat in the up pipe no, you dont HAVE to remove it, but they do have a tendency to get very hot and break down at higher boost levels.

wrxseeker

iTrader: (1)

Cheers for that Neilo - I thought that might be the case.

Jamesemt

If you are going to the trouble of getting a dp fitted, you may as well change the up pipe (as it has to come off...)

wrxseeker

iTrader: (1)

Thanks - it makes even more sense then.

What about changing the intercooler pipe like in the ppp pack, if you have a full decat, panel filter and re-map is it worth doing ??

wrx bill

my03 sti pure white
walbro 255 fuel pump
RCM induction
RCM modified oil pump
650cc inj
td05/06 20g turbo
janspeed 3" open neck de-cat down pipe
HKS Silent Hi-power 3" exhaut no cats
tek3 BRDevelopments remap :-)
defi bf range oil temp , oil press , turbo boost gauge
defi 2 controler placed where ponssy cup holder was centre of dash
leda b coilovers
Speedline super turini's 18"
red sti mud flaps
carbon lip spoiler
376 bhp and 350 ft/lb @ 1.5bar
cant find graph at the mo won dyno day at well lane pics in scooby mag edition 3 i think

may be for sale in the near future:-(

Jamesemt

Don't think its an issue on the newages...you'd be better off changing the full intercooler!

moto

I'm running the following engine mods on my 2002 WRX.

STI Intercooler
APS Intercooler Splitter
Green Cotton Panel Filter
H & S Up Pipe
Magnex Unequal Headers
TSL Thundercat Downpipe
TSL Centre Section
H & S Jap Style Back Box
Walbro Fuel Pump
FSE Fuel Regulator
HKS SSQV Dump Valve
TD04 Hybrid Turbo (Andy F)
Remap (Andy F)

Boost set for 1.45 Bar midrange and 1.2 Bar at high revs.
Made 306bhp / 293lb/ft on Dastek rolling road yesterday.

~~ Cal ~~

Nice ..............any idea what you were making with a plain old TD04 with the same set-up. My set-up is almost identical aside from the STi IC and the hybrid

Cheers
CGS

shoobydoo

iTrader: (4)

96 wrx import running 291bhp at 260 ft/lbs with organic clutch,sti bearing,sti head gaskets,heads skimmed&geometry mod

BVM

2002 US spec 2.0l Subaru WRX

Power Output:
349bhp 314lbft
277hp @ the wheels

Engine:
Forced Performance EVO3 'super' 16g @18 psi
STi 'pink' injectors
STi group N engine & pitch stop mounts
Walbro 255lph fuel pump
ECUTEK remap by WRC Technologies
TurboXS FMIC with Thermo Tec heat sleeve on cold side
Hyperflow CAI w/ Thermo Tech heat sleeve
TurboXS bypass valve 100% recirculating
Helix 3" decat TBE w/ electronic CEL fix
Helix decat up-pipe
NGK R spark plugs (one step colder)
Throttle body coolant by-pass
Perrin turbo inlet hose
Royal Purple pure synthetic oils
Greddy Profec B Spec S EBC
Installed but not mapped for
SMC progressive alcohol injection 50% Denatured/ 50% water
STi spec C 12L water spray reservoir modded for Alcohol injection

Transmission:
JDM MY02 STi 6 speed conversion
JDM MY02 STi 6 speed propshaft
STi group N trans mount
ACT heavy duty clutch, 411lbft rating
Kartboy poly shifter bushings
Kartboy poly shifter support bushing

Would be 300-330 Wheel but every UK mapper I have spoken with refuses to go above 350 crank HP with stock internals.

~~ Cal ~~

When you see what the WRX one looks like you'll see why people upgrade them.

For starters they are made of nasty cheap plastic ( Andy F has seen these melt before when running non-standard boost) and are corrugated - not ideal for smooth airflow

You can buy them cheaply here :-

http://www.rallydesign.co.uk/catalog...roducts_id=878

Also see here from one of my previous SIDC posts :-

"Prodrive has estimated around 10 horsepower from the replacement SAMCO Intake hose - and they are correct! We recommend the intake hose rather than removing the third cat, because it makes a more effective increase in power... AND is legal. Our customers have reported a noticeable improvement at each installation. Indeed while mapping ECUs, the Intake hose is so effective that we use a different boost map when one is installed to avoid overshooting!"

Source of this quote w.r.t Samco hose ........






Regards
Cal

Tuts

Any idea how the above compares with an sti cast alloy Y-piece as opposed to the wrx plastic one?

moto

Sorry Cal no. I went from just a backbox to my set up in one hit. It was a case of when I got the car back.

MartynJ

All work carried out @ enginetuner.co.uk

http://putfile.com/pic.php?pic=7/18509115087.jpg&s=f10
http://putfile.com/pic.php?pic=7/18509141763.jpg&s=f10
http://putfile.com/pic.php?pic=7/18509145133.jpg&s=f10
http://putfile.com/pic.php?pic=7/18509152284.jpg&s=f10

Please note that the WRX300 tagline is the name of the package not the vehicle type..
The car is a my04 WRX
1.4 bar peak tailing to 1.2

Neilo

very impressive for a VF34! you must be chuffed with that!

BVM

Wow that VF34 is very laggy! I am so glad I didnt go that route. Nice numbers though.

MartynJ

Yes....feels good....

Neilo

Some like the shove in the back though, i certain miss it with my 2.5

MartynJ

I know just what you mean....This car was really hard to fault at stage 2...315lbft of torque at 3500rpm made it an awesome road car , the owner decided that he wished to do a few track days and the odd rwyb hence the advice to fit the vf34...Doing this has shifted the power band up but strangely hasn't changed the feel of the vehicle much , it pulls just as hard low down but with a real kick in the *** in the midrange.......

RRH

MY03 wagon
MD304 Hybrid turbo
STi pinks
Pump & Reg
APS top mount
Full H&S Scoobysport, inc up-pipe.

Here's how much difference the mapper can make;

• Richard Bulmer map; 349/347 @ 1.1bar
• The previous mapper (most of you know who) 291 1.5 bar with 1.6 spikes, left like this by the mapper, who suggested I use a dawes to control it, on standard internals

SPIDERWRX

WHO WAS (The previous mapper)

Neilo

should add mine made a relatively conservative 338bhp and 355lbft a coupel of weeks back.

Fitting a GT30 in a couple of weeks to sort that right out

WRX_Rich

iTrader: (5)

Like it I f**kin love it



http://bbs.scoobynet.co.uk/showthread.php?t=490419

Neilo

just like that

Neilo

its funny htough rich as it suggest thats you get no power below about 5300rpm

im sure its not like that on the road right?

when does 1 bar appear?

WRX_Rich

iTrader: (5)

1 bar on the road is 3k8,, i don't take much notice of the graph as the car didn't seem to happy on the rollers throwing in allot of extra fuel

I am sure if you had a go you would think the lag was bad for all of 5 minutes untill you learned how to drive round it.

I can not say enough how different this car feels to the old vf35 /p18 setup - I really did not like it on the return from being mapped , and I am sure you know the return journy is normally the best

then 4 months later i am used to the car moving around on the road something that I ve never felt in my or any other subaru i ve been in and yes i love it, its soooo sooo fast, and never once have I thought since the last upgrade that i need anymore power .... job done

now when are you going to say that

so are you going for a real gt30 and messing with the exhaust or a hybrid job like mine?

and bigger question hows the 2.5, when / if mine goes pop I will be asking far more questions

Rich

GazTheHat

3,800 according to his project thread. Good thread that to read. Far more confidence to fit/play with anything than me. Got me thinking more and more and stage 2...

Neilo

Mine is a messer arounder like yours, so your turbo shoudl be great on a 2.5. I think the exhaust housing is a fair bit bigger on mine, and the wheel is slightly larger than that on a normal GT30, so im hoping it will behave in a similar way to what yours appears to....that will be a nice grunty track car