Daniel Bramall

Hi Everyone,

I have a standard UK 2.0T WRX Impreza and it is gutless. I have had it on the rollers at 170bhp first run at Alan Jefferies in Plymouth but then after a cheap option remap to appartly fix the overfueling and increase bhp got a reading of only 200.2bhp.

After driving a friends Impreza today at 286bhp, I was blown away with the difference.

Could you please advise me of the cheapest, cost effective way to get my car up to 280ish?

Can I buy an STI turbo from Ebay or anywhere else you would recommend, if so which would be recommended also any input on Re-map, or new ECU (Probably prefer remap as if I get to 280ish I will not modify further) and decat systems.

Thank You all in advance.

Dan

jura11

iTrader: (7)

Hi matey probably best option for you is get STi VF35,STi pink injectors,Walbro pump all in around 500£ excluding mapping(i recommend you open source remap which cost around 300-350£ ),and if is possible get STi 7/8 Top Mount intercooler and uprated panel filter like Green Cotton,K&N,and after this you will see around 330-340BHP

Jura

Multijfj

Beautiful!

Thats what you need Dan. I didn't mention injectors as I totally forgot about them. I had the Walbro 255/L fuel pump fitted to my STi, the VF35 is a single scroll turbo If I am right, the turbo I had on my JDM Sti was the VF37, which is twin scroll. It spools up very fast but I am not sure if its a similar fitment to the VF35, I should imagine so but they will be harder to come about.

One thing not mentioned is the exhaust, and if you dont mind the expense then go for a complete 3" straight through system, its more costly but it is fantastic. If not, then just remove the two standard cats and that will improve things.

Suberman

Hi Dan, Welcome to SN. +1 on what Jura said.

Alternatively, you could get an Andy Forrest TD04 which is the turbo that comes standard on a UK WRX (probably what you have right now), but totally reworked and sprinkled with Andy's magic fairy dust. Turbo is rated at 320bhp when tested on a UK WRX with supporting mods (exhaust and STI TMIC IIRC) but gives even better spool than a standard TD04.

For more information: http://www.andyforrestperformance.co.uk/16307.html

I would go for the smallest turbo capable of my power goals to ensure widest power band. But power as it is, it's never enough.

TonyBurns

iTrader: (3)

So have you not found out why your car is down on power?
I would want to know that first before even attempting to modify the car, if there is an issue with the engine or a component then it will probably fail and leave you with a large bill.
Also what mileage, service history etc does your car have? if the engine is tired then nothing will give it more power except a good rebuild cos it will just die on you

Tony

alcazar

iTrader: (2)

What Tony said ^^^^^

Daniel Bramall

Hi All,

Thanks for the replies. The car has done 64k, with history, recent cam belt. However recently the engine management light was on for a couple of engines. The car was on low fuel, and has since gone now running on Shell Optimax. I am not looking to achieve high end BHP - I'm looking for around 280 as cheap as reliably possible.

The car is producing 200.2 BHP which is less than 15bhp off the stock UK 02 Turbo Impreza so I don't think there is something massively wrong apart from the odd sensor, wire, valve, which would be picked up at time of mod and done together.

Hope this helps guys.

Any ideas.

Dan

s70rjw

iTrader: (2)

Why did the CEL illuminate? Have you checked what fault code has been stored in the ECU? As Tony says, make sure its fit before upping the boost

f4la k

iTrader: (1)

Going from a single scoll is not just a case of sticking on a twin scroll turbo. You would need the sump, and up-pipe and a few other bits and bobs, and the jdm sti would have had avcs to which aids spool.

Basically you just want a fuel pump, injectors, and a turbo just capable of the 280- 300, and some breathing mods filter and downpipe. You may not even need to change injectors for this, infact i dont think you will..

jura11

iTrader: (7)

Hi Dan on bugeye WRX is main fault/common fault and is it the O2 sensor(i think on your WRX o2 sensor fail),best possibly is get check via OBD reader or someone with OBD cable.
VF35 and STi pink injectors,255 Walbro pump(possible found somewhere STi TMIC) and you will see around 330-350BHP


Jura

Daniel Bramall

What would be the cheapest way to get it to 280-300, where could I get a turbo at a good price, do I have to buy new. I would rather not do the injectors purely for cost and the fact hat i wont keep the car for more than 6 months to a year.

Anyone got any parts for sale, and any recommendations on where to get the cheapest 3" turbo back pipe (with rear box as I have that already) or even just a full de-cat kit?

Do I need to do the injectors and the pump to get 280?, If not what exactly would I need and How should I go about doing it, i.e recommendations of anybody with spares or certain garages or company's you guys have used that will give a good price.

Thanks again everyone.
Dan

jura11

iTrader: (7)

Hi Dan look here For sale section for turbo(VF35 is here for around from 250-350£ or Sti injectors for round 150-180£),Fuel pump you will need for remap(65£ on ebay),3 port boost solenoid is highly recommended(60£)


But if you want just 270-280BHP stick with your turbo which you have(TD04 i think),buy 3 port solenoid(60£),Walbro pump(60£) and 3" full exhaust(look here at group buys for Cobra exhaust,have good reputation and good price or cheaper option is Japspeed),your OEM injectors will be fine to 310-320BHP



Cheers,Jura

Daniel Bramall

Thanks again Jura

Dan

alcazar

iTrader: (2)

15bhp down or 150, if it were me I'd NOT be doing ANY mods until I'd got to the bottom of that CEL, and sorted it.

Trust me, dude, engine repairs on these babies are NOT cheap

Daniel Bramall

Is there a manually way of checking the fault code? I know that since 2001 they all had to comply to certain regulations which means I can buy a tester for £50 from argos that should do it? What do u think?

jura11

iTrader: (7)

Hi Dan try found good garage in your area(or Scooby specialist) for CEL diagnostic(which will cost no more than 50£) and if is possible post here the error code and i'm pretty sure guys will help you....

TonyBurns

iTrader: (3)

Fault code readers only do that, read fault codes, they DO NOT diagnose faults, and not every fault pulls out a code.
15bhp is also alot to be down power wise considering that most of these cars push over the stated power, so you have an issue that needs solving before going forward, then 280bhp will cost you a bit, especially if the clutch is worn.

Tony

jura11

iTrader: (7)

My main concern is maybe you are going on fail safe map(if its O2 lambda sensor/sonda).Get this first sorted and after this you can think on remap and little bit power as recommend here guys

Brun

Tony / alcazar - wise words.
Don't **** with sommat that could cost you ££££'s if you get it wrong!

DJ_Jon

iTrader: (7)

If you can get back to Alan Jefferies, I would ask Martyn to read the fault codes & give you an idea of what the problem is. They won't rip you off & will give you sound tuning advice - don't ignore good advice. By the sound of the noises you are making, you seem more interested in getting to the magical 280bhp instead of making sure your car is reliable & strong.

Get it sorted & running sweet, then look at modding it.

Daniel Bramall

I took it back to Martyn, at Alan Jefferies and they run the ecu test and it was the cam belt timing thing sensor. I cant remember exactly what he called it as it was on his screen. he pointed to a part which looked like it had one 10mm bolt going to it slightly in front of the middle to the right and slightly forward and pointed to a small device with a wire/cable/tube going to/from it. Apparently this wont make much difference to the power but he has suggested that the last person who did a cam change may have put it on slightly wrong? The chap recconed the replacement part I need is around £170 plus vat plus fitting?

Any advice guys please. P.S Thanks for your advice so far

jura11

iTrader: (7)

Hi Dan you are mean Camshaft sensor?

Daniel Bramall

Yes I think that's what he called it. What do u reccomend? Thanks

jura11

iTrader: (7)

Hi Dan i recommend get this sorted asap,for piece of your own mind and no CEL(check engine light)
Here is link where you can buy Camshaft sensor(or you can try source cheaper via eBay,but i'm not sure if is on eBay genuine part),but you must be sure is Camshaft position sensor and also you will need 2(which price for 1 is 69£) and fitting/labour price on the top.But maybe you will need just one,but without the error code we don't know
http://importcarparts.co.uk/parts_in...en=&searchKey=

Daniel Bramall

Would it be too difficult to replace myself. I've done lots of mods on older cars. Engine changed and what not. It Is it worth taking tons pro and getting the lot sorted in one go? *Thanks again for your help. The reason I'm looking at 280ish is I though i could get to that at s fairly good price where would you reccomend i buy the parts? *And what about second hand stuff. Thanks

Daniel Bramall

And world it made a performance difference

jura11

iTrader: (7)

I think you can replace Camshaft sensor(but somewhere i have PDF),and about the second hand stuff(with some parts you will be very careful,but overall is OK buying 2nd hand stuff)
I think will made difference,because you are now running on fail safe map(last time you are been on dyno with Cel(check engine light) and you are made 200BHP,same like me i last time has been on dyno with CEL(front O2 sensor) and i made around 10BHP lower than normal)

alcazar

iTrader: (2)

Dan, if the blokes at Allan Jefferies told you that, it's worth acting on. They know their stuff and aren't rip-off merchants.

Pink_Floyd

Daniel as you have stated you'll only keep the car for six months or so why not save the cash that you would have spent modding, get the car running properly, sell and invest the total sum into an STi or the car you want with 280 ish standard?