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Old 05 March 2006 | 01:32 PM
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Default wrx tuning

i am about to get my first subaru impreza at the end of the month . i am getting a 1993 wrx and plan to spend good money on tuning this

i am asking people here for advise and links to tuning this car

i have just sold my s13 and this is done in stage's normally

stage 1 - induction / free flow exhaust / fuel pump / IC / stage 1 chip

etc etc

are the wrx's done in the same way and if so can some one list

thanks
Old 05 March 2006 | 01:44 PM
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Originally Posted by dean/abz
i am about to get my first subaru impreza at the end of the month . i am getting a 1993 wrx and plan to spend good money on tuning this

i am asking people here for advise and links to tuning this car

i have just sold my s13 and this is done in stage's normally

stage 1 - induction / free flow exhaust / fuel pump / IC / stage 1 chip

etc etc

are the wrx's done in the same way and if so can some one list

thanks
First, bare in mind, this is a 13 year old car; don't go too crazy unless you budget for an engine rebuild.

Second, you do know that import WRXs need to be run on SUL and Octane booster don't you? The ECU is configured for jap fuel. Using less than SUL and OB can lead to detonation.

Your first step should be to get a Knock link to warn of any detonation that might be occurring at any of the stages of tune....or currently. Then get the exhaust fully decatted; I think the 93 WRX only has one in the DP. Then a intercooler from a later spec car, maybe an Sti V, a decent filter and a Apexi ECU and remap by an expert. Should be good for bhp 280+ I wouldn't do much more to it that that TBH.

Ns04

Last edited by New_scooby_04; 05 March 2006 at 01:49 PM.
Old 05 March 2006 | 03:10 PM
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Hi and welcome mate, as ns04 just said, its a 13 year old car so I would be careful... if your really certain that you wanna tune a scoob, I'd recommend getting a newer car. how much is that one gonna cost mate? and whats your budget?
Old 05 March 2006 | 03:33 PM
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The first thing I would suggest is get used to the car. In the meantime, spend countless hours/days/weeks reading the threads on the forums to see what other people have done successfully.

There have been a lot of costly mistakes, so it's worth the read and of course, you'll find out where the best places to go are.

p.s. - the MY93 brakes are cr@p
Old 05 March 2006 | 09:18 PM
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im going to get one for maybe 3k - 4k

might not be a 93 but just whats going that i like at the time

does the uk model tune then same as the wrx (as in gains )
Old 05 March 2006 | 10:59 PM
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Originally Posted by New_scooby_04
First, bare in mind, this is a 13 year old car; don't go too crazy unless you budget for an engine rebuild.

Second, you do know that import WRXs need to be run on SUL and Octane booster don't you? The ECU is configured for jap fuel. Using less than SUL and OB can lead to detonation.

Your first step should be to get a Knock link to warn of any detonation that might be occurring at any of the stages of tune....or currently. Then get the exhaust fully decatted; I think the 93 WRX only has one in the DP. Then a intercooler from a later spec car, maybe an Sti V, a decent filter and a Apexi ECU and remap by an expert. Should be good for bhp 280+ I wouldn't do much more to it that that TBH.

Ns04
are u serious u can get 260 to 280 standard from a wrx done right u will see more than that. just be careful a lot of what is written on this **** is a load os ****e
Old 05 March 2006 | 11:23 PM
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Originally Posted by 95blackWRX
... just be careful a lot of what is written on this **** is a load os ****e
Eh? Like your post then?
Old 05 March 2006 | 11:31 PM
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Get a Z4 ECU from a sept 94> car.
Has a much better map than the ones in an early WRX, and will also get a bit more power.
Can pick them up for around £100-£150
Old 05 March 2006 | 11:37 PM
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i got hold of a Z4 ECU last month
and i can say well worth it got mine for £115
Old 05 March 2006 | 11:42 PM
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Originally Posted by 95blackWRX
are u serious u can get 260 to 280 standard from a wrx done right u will see more than that. just be careful a lot of what is written on this **** is a load os ****e
The 1993 WRX saloon had 240bhp IIRC when new! Assuming this is in exceptional condition it may have something approaching that now (but I doubt it). That's to say nothing of the longevity of the transmission etc.... Perhaps rather than just calling the knowledge imparted here by others '****e' you might like to share with us what power levels you think are achievable, on what specification and speculate on the implications of this specification for the durability of the car?

Or perhaps we should just direct this individual to someone like Andy F or Bob Rawle now and let them have their say......

Ns04
Old 05 March 2006 | 11:45 PM
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Originally Posted by 95blackWRX
are u serious u can get 260 to 280 standard from a wrx done right
That's what NS04 said in the post you quoted.
Old 05 March 2006 | 11:50 PM
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Originally Posted by New_scooby_04
The 1993 WRX saloon had 240bhp IIRC when new! Assuming this is in exceptional condition it may have something approaching that now (but I doubt it). That's to say nothing of the longevity of the transmission etc.... Perhaps rather than just calling the knowledge imparted here by others '****e' you might like to share with us what power levels you think are achievable, on what specification and speculate on the implications of this specification for the durability of the car?

Or perhaps we should just direct this individual to someone like Andy F or Bob Rawle now and let them have their say......

Ns04
Yep, and that 240 was on Jap fuel (so would need Optimax + octane boost)
Transmissions on the older cars are now getting on a bit. I am aiming to eventually get my WRX to around 320-330bhp, but it will take a lot more than a simple re-map!!!
Needs full exhaust system, bigger injectors, uprated intercooler, Apexi ECU, maybe new turbo, and probably a few other bits.
And am fully expecting to replace my gearbox (again).
Looking back it would have ben cheaper and easier to get a STI, but building it all up from a basic WRX is kinda fun (but very expensive).
I was working it out last week, and in the last 18 months i have spent over £5k on it (aswell as another £5k buying it)!!!
Old 05 March 2006 | 11:58 PM
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Originally Posted by Moley_WRX
Yep, and that 240 was on Jap fuel (so would need Optimax + octane boost)
Transmissions on the older cars are now getting on a bit. I am aiming to eventually get my WRX to around 320-330bhp, but it will take a lot more than a simple re-map!!!
Needs full exhaust system, bigger injectors, uprated intercooler, Apexi ECU, maybe new turbo, and probably a few other bits.
And am fully expecting to replace my gearbox (again).
Looking back it would have ben cheaper and easier to get a STI, but building it all up from a basic WRX is kinda fun (but very expensive).
I was working it out last week, and in the last 18 months i have spent over £5k on it (aswell as another £5k buying it)!!!
Hey Gary, you ok mate?

There we go any newbies thinking of buying and modifying a WRX properly, that's an idea of the potnetial costs from someone who's in the process of tuning.

I've said it before and I'll say it again: there is no such thing as a cheap scooby; sooner or later, you pay.........even more if you want to make it go faster!!

Ns04
Old 06 March 2006 | 12:02 AM
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Originally Posted by New_scooby_04
Hey Gary, you ok mate?

There we go any newbies thinking of buying and modifying a WRX properly, that's an idea of the potnetial costs from someone who's in the process of tuning.

I've said it before and I'll say it again: there is no such thing as a cheap scooby; sooner or later, you pay.........even more if you want to make it go faster!!

Ns04
Hi mate, i'm cool. Hope you're well

Bear in mind that price DOESN'T include Apexi (buying or mapping), injectors, or the new exhaust.
One thing buying the car, another thing keeping it going!!!
Old 06 March 2006 | 12:10 AM
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Originally Posted by Moley_WRX
Hi mate, i'm cool. Hope you're well

Bear in mind that price DOESN'T include Apexi (buying or mapping), injectors, or the new exhaust.
One thing buying the car, another thing keeping it going!!!
Hi mate, I'm good thanks, managed to avoid that cold going around so far, ha ha, I am invincible, invincible I tell you.............achoooooooooooo! Sod!!!

The number of people we get on here saying they've just bought a 13 year old car and want to give it *adopts Dr Evil impression* "One Million bhp" *end impression* for about 10 quid is amusing! People really need to do their homework!!

I hope they'll also be informing their insurers of their mods!!

Ns04
Old 06 March 2006 | 12:15 AM
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Originally Posted by New_scooby_04
Hi mate, I'm good thanks, managed to avoid that cold going around so far, ha ha, I am invincible, invincible I tell you.............achoooooooooooo! Sod!!!

The number of people we get on here saying they've just bought a 13 year old car and want to give it *adopts Dr Evil impression* "One Million bhp" *end impression* for about 10 quid is amusing! People really need to do their homework!!

I hope they'll also be informing their insurers of their mods!!

Ns04
I hope they do mate, lots of naughty people out there
Kind of depressed me thinking how much i have spent on the car. That £5k doesn't include oil changes, fuel, tax or insurance either!!!
But then i think how much money my mates spend in the pub/club each week, and i feel a bit better!!!
These cars need money spent on them in the correct way, or they just turn into a bigger money pit.
Also, spend the momey in the right places and you'll get more when you sell the car. (not as if it'll be getting sold for a while, too many plans for it.)
ps....managed to find a fairly recent pic of it. Not bad for an old girl!!!
Old 06 March 2006 | 12:32 AM
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i have a wrx 95 that has nothing done to it apart from a zeroaports ecu running 1.2 bar of boost what power do u think that is putting out then
Old 06 March 2006 | 12:39 AM
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Originally Posted by 95blackWRX
i have a wrx 95 that has nothing done to it apart from a zeroaports ecu running 1.2 bar of boost what power do u think that is putting out then
At a guess i would say 275-280, possibly a bit less.
W8 (? - standard '93 ECU) runs approx 0.8 bar @ 240bhp, Z4 runs approx 1.0 bar @ 260bhp (Don't quote me on these figures)
Depends on the map on the ECU aswell, and what fuel it is designed for.
Without 440cc injectors you won't get over 300bhp
Old 06 March 2006 | 12:41 AM
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Originally Posted by Moley_WRX
At a guess i would say 275-280, possibly a bit less.
W8 (? - standard '93 ECU) runs approx 0.8 bar @ 240bhp, Z4 runs approx 1.0 bar @ 260bhp (Don't quote me on these figures)
Depends on the map on the ECU aswell, and what fuel it is designed for.
Without 440cc injectors you won't get over 300bhp

so what would i get with the above plus de cat middle pipe and panel filter or full de cat
Old 06 March 2006 | 12:45 AM
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i run 1.2 bar of boost from a zero sports ecu i want to de cat the middle pipe with a 2.5inch magnex pipe plus a panel filter and uprated fuel pump what power am i likly to see
Old 06 March 2006 | 12:48 AM
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i am also wanting to upgrade all discs and pads and calipers if someone can suggest good place to buy these. And to get sti suspension the ones that are pink on the struts and dampers if anyone knows where u can get them

thanks for any help
Old 06 March 2006 | 12:57 AM
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Will try my best to answer.....

Ref the exhaust, you might see a few more bhp, but would probably need your ECU re-mapped. Might be worth getting a Knocklink to check for detonation.

Brakes, go for 4 pots. Much better than the 2 pots. Best place to get them from is the for sale section. A guy called David Blows was selling a set complete with discs and pads a while ago, give him a pm.

The suspension, speak to David @ API or pm 'Money' for some new ones. Or might be worth trying a few specialist breakers to see what they have. (Scoobybits - 01709 555155). Would recommend doing the brakes first though.
Old 06 March 2006 | 01:02 AM
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yeah doing the brakes first i am after new suspension. Why would i need my ecu remapped for fitting the exhaust
Old 06 March 2006 | 01:07 AM
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Originally Posted by 95blackWRX
yeah doing the brakes first i am after new suspension. Why would i need my ecu remapped for fitting the exhaust
Might affect the fuelling. Too lean and BANG!!!
To be honest i am running a standard Z4 with a full de-cat exhaust, FMIC, induction kit and Walbro fuel pump. Has been ok so far (touches wood) but worry everytime i 'give it some'. Am going for the Axexi not just for the power gain, but for the safety factor aswell. (although if my engine does die it will be a great excuse for a 2.5 bottom end!!!)
Old 06 March 2006 | 01:12 AM
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yeah my engine was rebuild by API in 2003 so am assumming it is pretty much like a new engine when they have done that
Old 06 March 2006 | 01:13 AM
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would a de cat middle pipe affect fueling or is it just if i fully de cat
Old 06 March 2006 | 01:16 AM
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I would say it'd be ok, but again don't quote me on it.
Lot's of people on here change their exhaust without any problems, so you'll probably be fine. Mine has been ok for 18 months (40k kms).
Old 06 March 2006 | 01:22 AM
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would like a mid section for the deeper burble but was thinking about a full de cat as guy at greer sport says it will help spool up. my turbo spools at 3200 he says it would spool at 2200 with new exhaust. As downpipe is as wide as turbo
Old 06 March 2006 | 01:23 AM
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i am looking to fully restore car to all new parts so it is as good as new
Old 06 March 2006 | 01:27 AM
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Originally Posted by 95blackWRX
i am looking to fully restore car to all new parts so it is as good as new
Not cheap, but well worth it. Although there are some good deals on the for sale section if you don't mind second hand parts.



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