Claaarkio

iTrader: (1)

Hi,

could some one point me in the direction of a "tuning stage guide" for a wrx, what to start with etc etc.

Also if adjusting the boost is there a safe limit that the boost can be increased to before adjusting the fuel? or should a re mapped chip be used to increase fuel ?

Sorry for the basic questions, hope to be up to speed on all things scooby related soon!!

cheers Dave

rossyboy

iTrader: (8)

Well its taken you 4 1/2 years so far

Claaarkio

iTrader: (1)

Yup been a member for a while lol, mainly for the oddd question for my brother, but after working on his for a while i decided to get one myself!

so anyone got any info for me? or can just point me in the right direction ?

myblackwrx

iTrader: (1)

Depends what you want and how much you want to spend.
standard ecu can be chipped with an ESL chip or ditch it and get a remappable ecu (Apexi power fc is very popular,Motec,Gems etc).
If you get a remappable ecu then it would be best to speak to the person who maps it for what mods you can/should do.
Decat/full exhaust system would be a good start.

jaytc2003

iTrader: (1)

first off all start off with a budget. This will determine what you can/cannot do safely.

A good cheap mod is a dawes type device to increase the boost slightly, this will give you small noticeable gains. After that, as yours is a 93, go for a full decat, this will make it sound a bit more throaty and will gain you a bit more power as well. You may need to adjust the dawes device though as you may now hit overboost (decat downipe will aid boost slightly).
People will probably tell you not to go for a full decat without a remap / remappable ecu. In my experience (also with a 93wrx) I had a full decat and induction filter fitted and hardly had any knocklink activity. You could also fit a z4 ecu as an alternative to the dawes as this will give you increased boost and fuelling.


Ahh knocklink, it may be wise to invest in one just to keep a check on your engine if you add any of the above mods.

After those minor engine mods, maybe look at the suspension and brakes. Although they wont give the car more power, it will allow you to drive it faster.

After this, a remappable ecu like a power fc or equivalant. Uprated fuel pump, possibly new fuel regulator, bigger injectors and a fmic. With the last stage of mods that will see you over 300bhp

rossyboy

iTrader: (8)

Most people will say brakes first. I always doubted this, but once I put a set of later year 4 pot calipers with new discs, mintex pads and braided hoses I have to agree. The early 2 pot caliper set up is sh!te.

Performance wise as a first stage:

Decat exhaust with performance panel filter and "ScoobyEcu" type chip will safely increase boost and see around 280 bhp. A lot of people say go for a Z4 ECU from a 95/96 WRX, but I cant see the point. Just go straight for the chip.

borat52

As said here, just go straight for the scoobyecu/ESL chip. Probably the best value set of mods you can make are decat/panel filter/esl chip. Will cost about £150 for decat, £30 for panel filter and £195 for chip. That should seee you to 280+BHP. After that you could try tweaking the boost but I would not bother - small gains and big risk to your engine.

The next step would be a FMIC and larger injectors. ESL can even give you a postal map (which is about £50 if you already have their previous map) to take advantage of 440cc injectors and a FMIC with induciton kit. However you must set your own boost with this chip using a dawes or electronic boost controller. You should also really have a knocklink installed and some sort of lambda sensor to let you know if your running lean when getting to this stage, however it should be worth the hassle as its supposed to give up to 320+BHP with over 1.2bar of boost.

I personally went, standard -> Z5 ECU with decat/panel filter -> ESLchip -> currently doing 440cc injectors with FMIC and dawes device.

Each step so far has improved performance very nicely, and I have also uprated the brakes/suspension along the way to cope with the power.

After that its recommended to get a power FC for a custom map.

Claaarkio

iTrader: (1)

Excellent, thanks for all the info lots to think about there.

So where is a good place to get an ESLChip ?

The car currently has an STI exhaust? is there any gain in this?

So is it worth just getting the decat downpipe ? and leave the STI exhaust?

Dave

myblackwrx

iTrader: (1)

ESL is enduring solutions they post on here as ESL (funnily enough)

Claaarkio

iTrader: (1)

LOL, really! thanks

rossyboy

iTrader: (8)

If the exhaust is stainless, just get the decat downpipe.

Claaarkio

iTrader: (1)

I've been told its an STI exhaust, so i am assuming its not a SS, are the standard STI exhausts Mild steel ?

Dave

fwdnutz

really m8 if you are going to continue the modding on your car in stages i would opt for any good full decat sytem of over 2.5" diameter as this will help your engine/turbo to breathe and more power gains can be reached at later stages! std catted exhaust is one of the main restrictions on the imports .
next i would check to see if you have a td05 turbo fitted cos if you only have a td04 you won`t gain much more bhp with this turbo maxxing out!
as said b4 alittle list for you!

440cc sti yellow injectors (series 1 will go straight in your fuel rail, series 2 need adapters from carl davey!) ebay search!
Warlbro 255l/h uprated fuel pump available on ebay again
ESL chip/daughter board from Andy at www.enduringsolutions.co.uk
Hks/apexi/kn/pipercross air filter kit (depends on budget)
aftermarket dumpvalve hks ssqv/blitz bov/forge motorsport/collins again ebay.
electronic boost controller such as Apexi AVCR/HKS equvalent Ebay!
change to a larger tmic from my99/2000 models with bolt on dumpvalve can be made to fit search for top mount intercoolers on forum for tech.
or mone no problem ultimately fit a frontmount intercooler kit Hks are the best out of box fit but copies can be just as good but need a bit of work on fitting if competent should`nt be a problem again do a forum search for info.
and finally a definate must fit a knocklink or even detalarm from roojai on here to monitor detonation levels.
add some good gauges to list for peace of mind such as AUTOGAUGE oil pressure,oil temp,boost pressure.

after this if you still want more power you will have to go for a bigger bore such as 2.2/2.33/2.5 litres and use forged pistons,and con rods, sti8 crankshaft. bigger turbo charger,bigger injectors, Apexi power fc mapped by likes of Andy F AndyForrestPerformance and the list continues until you have emptied your bank account LOL!

myblackwrx

iTrader: (1)

if you do go and decide to empty the bank account check - Flat4online.co.uk Subaru Impreza Mitsubishi Evolution EVO Walbro Fuel Pumps Injectors Intercoolers (just a guide on prices as you can get bits cheaper)

Claaarkio

iTrader: (1)

Cheers for the info fella,

I would consider my self competent with mechanical things, i have rebuilt R5 engines before, and last weeked fitted a flat 4 FMIC to my brothers Car, its one of the reasons i got a scooby, I love tinkering!!

One thing i dont want is a stupidly loud exhaust, the STI exhaust is quite quiet at the mo, wouldn't i still be able to get to a middle of the road power with this exhaust?

For instance : a chip, and filter, STI exhaust allowing about 280BHP?

Dave

Claaarkio

iTrader: (1)

Also, what boost is then run with the ESL chip ?

Cheers

Dave

myblackwrx

iTrader: (1)

heres a link to ebay for their chip

eBay.co.uk: Subaru Impreza ECU Upgrade Chip (item 140047468564 end time 09-Nov-06 11:21:39 GMT)

also has a link to their website

Claaarkio

iTrader: (1)

Blimey! 15.9PSI!!

And the chip adjusts the fueling as well?

And you suggest getting injectors and uprated fuelpump before fitting a chip ?

Can the version 1 just be tweeked to 12.7 PSI without any other mods?

Cheers for the info and sorry for all the questions!

Dave

rossyboy

iTrader: (8)

The chip will sort out the fueling and YOU WONT NEED TO CHANGE THE INJECTORS OR THE FUEL PUMP with just the chip.

12.71 psi? pah not worth it mate, thats only about 1.3 above standard and you'd barely notice the difference.

myblackwrx

iTrader: (1)

Questions are no problem thats what forums are all about.
Go with the fuel pump anyway as its relatively cheap and yours has been in the car along time.
i'm guessing its mapped to work with standard injectors (380cc) if you speak to them i'm sure they 'll tell you.
If you are going for more power do the brakes first always better to stop quicker than go quicker (i bought a set of late model 4pots which are good enough.
You haven't mentioned a power goal (300bhp or more) so best to get a budget and what power you want first then start tinkering imo.

Claaarkio

iTrader: (1)

Just got a lightening response fro mESl, can run on STD car but better with DE Cat and IK.

Claaarkio

iTrader: (1)

The problem is i probably wont be working towards a goal as such, i will find myself with funds from time to time to modify, house will have to come first!! (only just though) lol

I am thinking:

De Cat downpipe,
Panel filter,
Then ESL Chip

Then maybe a FMIC, only becuase I like fitting them lol

Thabnks for all the great info so far

myblackwrx

iTrader: (1)

fitting an IK is a contetious subject on here (killing mafs, sucking in hot air from the engine bay ,don't need 1 if you under 350bhp etc).
I've fitted 1 to my 93wrx and its fine (intake temps a little bit higher) but still going to build a heat sheild for it

posted this after you said to go for panel fliter

myblackwrx

iTrader: (1)

Or you could save money each month and do the mods in 1 hit

Claaarkio

iTrader: (1)

Yeah but i need to be doing somthing or i go mad lol, I had an FTO for 2 years and couldn't do anything to it really, except oil changes and general maintenence!!

Claaarkio

iTrader: (1)

How would you rate this downpipe for instance? first one i came to:

eBay.co.uk: SUBARU IMPREZA WRX STi DE CAT DOWNPIPE EXHAUST DECAT (item 220057454075 end time 12-Dec-06 20:30:41 GMT)

Dave

Claaarkio

iTrader: (1)

OK, how do i tell the difference between a TD04 and TD05 turbo ?

Dave

myblackwrx

iTrader: (1)

That downpipe is for newage.
You could try Stainless steel exhausts manifolds and headers from Hayward and Scott people on here highly rate them.
i went for an HKS as thats what my local subaru specialist uses.
I'm sure the turbo would have identification marks on the housing.
Other useful sites [url]www.scoobyworld.co.uk[url],[url]www.scoobyparts.com[url],www.scoobybits.co.uk

Claaarkio

iTrader: (1)

Cheers bud.

Dave

fwdnutz

The turbo has a plate on it you will have to remove the heatshield if you havent already then you will see plate near to rear of ctl head on alloy compressor side of turbo it should have somewhere in all the no.s eithor TD04L or TD05H stamped on side! as for induction kit only the mafs on the later cars 97- had issues with airflow destroying them earlier cars should be ok! rgds Al.