boothydude

hi people,new 2 this so any advice wud b gratefull.owned a uk impreza now 4 a few months, s reg,dsnt seem 2 hav the umpff as 2 previous imports i hav had.i wnt 2 keep the car fairly standard,got mentioned that the imports hav a bigger turbo ??think mine is a td40.also i tried a z4 ecu in it but it failed 2 start,is this bcause its out ov a jap model if so wat ecu or chip cud i install 2 slightly increase bhp ?

badman1972

Ask one of the resident tuners on here about getting yours re-mapped mate. I can personally recommend JGM as per my signature, there are a number of good ones on here!!

zakscooby1

iTrader: (8)

hi mate,the z4 as far as i know was for the model year 94-96 so it wouldnt start ur uk spec 98.Best thing is to contact a tuner as mentioned above JGM,
Advantage for your car is you can map your existing ecu (ecutek software)
Think basic mods i.e exhaust, filter, walbro fuel pump and maybe bigger turbo (ihi) would give your car decent power after the remap
hope this helps

boothydude

thanks,bout the filter,it has a cone k+m on it at the mo but hav just read that this is ov no advantage 2 me infact cud b causin fuelin problems,i had intended 2 put original housin bk on but the air feed pipe has been shortend 4 the cone filter.again thanks 4 the advice

Jolly Green Monster

iTrader: (4)

S reg would mean it is a 97 (had ht leads not individual coilpacks) the z4 ecu will not fit as that is a 93~96 model year compatible ecu, so I presume you tried an sti ecu for 97/98 which won't start as cam and crank and fuel pump pins are different to stop you running it as so much is different you will damage the engine running it.

Simon

zakscooby1

iTrader: (8)

boothydude:you have the man right here cant complain against simon JGM

boothydude

2 quick questions plz,wat grade oil goes in2 my 98 uk spek impreza,is it 5/30 fully synthetic ?and av just decated it ,wat damage 2 the engine if any will happn b4 it gets a remap?

Jolly Green Monster

iTrader: (4)

can't get better imho than motul 15W50 300v competition.. I wouldn't run 5W30..

it could overboost, it could run lean, 98 uk should in theory be okay though decatted

boothydude

thanks,am also upgradin the fuel pump and was thinkn bout a td05 instead ov the 04,wat advantages r there doin this plz.

Jolly Green Monster

iTrader: (4)

td04 will push max 280bhp, td05 more like 340bhp..

so with a set of injectors and remap decat etc 300~320bhp.. with fmic then maybe more etc

Simon

boothydude

thanks very much,will take your advice onboard.

boothydude

hi people quick question again,,a ihivf28 turbo replacing my td04,wat advantage if any thanks.

Splitpin

If you don't get the car remapped, no advantage at all, it'll either be worse or potentially push the engine into an unsafe and unsustainable performance envelope (i.e. you'll eventually break your engine).

If you take care of any necessary supporting mods, get your car mapped properly for it (or, if you have a 97/98 model year car, fit a mappable ECU), then you'll be up around 310-320bhp.

boothydude

hi people,wud it be possible to change my ecu rather than get it remaped,if so what ecu wud fid and work in my car,was due to take it to get remaped but i havent got all my planned mods yet.i hav decatted ,pannel filter but havnt upgraded my fuel pump or injectors yet.wud like to know if i cud just buy an ecu thats suitable but all the s and z numbers i havent a clue about.hav tried a z4 which i now know wasnt compatable.

Jolly Green Monster

iTrader: (4)

97/98 you cannot swap ecus about