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How to get more bhp?

 
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Old 05 June 2011, 03:51 PM
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imprezadad
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Default How to get more bhp?

Hi all, I have got a 2005 wrx ppp and looking at improving it a bit power wise. Is it right to change to a VF34/35, pink injectors, walbro fuel pump, panel filter and a remap? The exhaust is standard as far as I know apart from the Prodrive backbox which was fitted with the prodrive pack. I am looking to buy over a period of time so no hurry just looking into it so as not to buy the wrong bits.
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Old 05 June 2011, 04:24 PM
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Originally Posted by imprezadad
Hi all, I have got a 2005 wrx ppp and looking at improving it a bit power wise. Is it right to change to a VF34/35, pink injectors, walbro fuel pump, panel filter and a remap? The exhaust is standard as far as I know apart from the Prodrive backbox which was fitted with the prodrive pack. I am looking to buy over a period of time so no hurry just looking into it so as not to buy the wrong bits.
sounds like you've got it all sorted, full decat also, to get the best out of your mods.
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Old 05 June 2011, 07:47 PM
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As above chap, with a remap and those parts you should see around 330bhp.
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Old 05 June 2011, 09:23 PM
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Originally Posted by Kedlestone
As above chap, with a remap and those parts you should see around 330bhp.
Tad less, no AVCS on the wrx.

Last edited by Black Widow; 05 June 2011 at 09:25 PM.
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Old 05 June 2011, 10:15 PM
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If your interested got a vf35 and pink injectors that i'll do for £380 collected. You could collect from Warwick and get mark at Thwaites to opensource map it. You will be very impressed trust me!
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Old 06 June 2011, 10:07 AM
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thwaitesdevelopments.co.uk
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Old 06 June 2011, 10:25 AM
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Ive got a TSL group n BB, Classic style centre pipe which will work with a classic downpipe (no need to buy the extra small centre pipe then and works and fits perfectly on newage), STI pinks, VF35 and green panel filter and someone on here is doing a group buy on fuel pumps so could do you a deal on the lot if you like. I think you can get open source maps for about £200-£300ish.
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Old 06 June 2011, 03:22 PM
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Thanks for replys, couple more ?????? If using decat system how do you stand come MOT time or is it better to get a sportcat downpipe? Legamorph let me have some prices but funds are tight at the moment due to just buying the car, insurance,bla bla bla.
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Old 06 June 2011, 09:36 PM
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If you have a friendly MOT man, thats the cheapest way, £350 average for a Map, Mark at Thwaites can fit your mods and sort the map out at the same time, otherwise if you want to build on your mods, get Mark to map it and tweak it when you get them added, a little bit more expensive in the long run, but at least you can enjoy the fun on the way.

If you decat you'll need it mapping anyway. Just so you know

Last edited by Black Widow; 06 June 2011 at 09:38 PM.
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Old 07 June 2011, 11:19 AM
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VF35, Pinks, centre and BB ill do for £475 but I would need an answer today though as I have buyers lined up for bb and centre but would rather sell the whole lot to you
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Old 07 June 2011, 11:24 AM
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Mark is a top bloke.
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Old 07 June 2011, 04:09 PM
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Originally Posted by Lagamorph
VF35, Pinks, centre and BB ill do for £475 but I would need an answer today though as I have buyers lined up for bb and centre but would rather sell the whole lot to you
I'll have to pass for now, just aint got the funds and not sure how I want the exhaust to be as in decat or sportcat. Thanks though.
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Old 07 June 2011, 04:55 PM
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no problem give me a shout when you do as I may still have the vf35 and pinks if you still require them. but if you dont want to spend that kind of cash a simple decat and remap would give you good gains, about 270-280 I believe, mark will know better than I
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Old 07 June 2011, 08:47 PM
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How much do you intend to spend on improving your power?
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Old 07 June 2011, 10:39 PM
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Originally Posted by Hammer man
How much do you intend to spend on improving your power?
Intend to buy things over time as there is no rush. I want to buy a vf35,pink injectors,filter,fuel pump, and think I might go decat from turbo back but MOT may be a problem. Then get them fitted and mapped at Thwaites as the lads on here are singing there praises. Budget is an issue hence buying used over time and seeking advice/pointers from here will no doubt help save me a few quid. I would like 300+ bhp from this and will just be patient picking up a part at a time if need be. I also think that it will be better to have it all fitted in one go and then mapped to save me endless journeys. Would 300-320 bhp be safe on the WRX as I would not drive any quicker just always wanted to get a 300+ bhp Impreza.
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Old 08 June 2011, 07:09 AM
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a decat and remap on your wrx as it is mate will see 270.

Any more than that (ie vf35, pinks etc) then you should consider your brakes, gearbox and suspension

Any power needs to be reliable and you should always be able to stop\handle
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Old 08 June 2011, 07:20 AM
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I would also consider an STI top mount to keep charge temps down.
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Old 08 June 2011, 07:36 AM
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Originally Posted by B4D HK
a decat and remap on your wrx as it is mate will see 270.

Any more than that (ie vf35, pinks etc) then you should consider your brakes, gearbox and suspension

Any power needs to be reliable and you should always be able to stop\handle
Very good point.
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Old 08 June 2011, 09:33 AM
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not just a pretty face me lol

I know of atleast 5 friends who have had wrx gearboxes/engines/brakes go once over the 280 figure..........I guess driving style has a part to play too
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Old 08 June 2011, 10:32 AM
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Really, wow! I allways thought the 5 speed was good for upto 350bhp learn something new everyday.
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Old 08 June 2011, 10:50 AM
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As H says, its how you drive it with that power. Dad had 330bhp in his old bugeye, broke the box twice. He's stuck to more moderate power now with this one at around 300.
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Old 08 June 2011, 04:57 PM
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Or think seriously about selling your wrx and buying an sti by the time you have spent £££s on engine parts mapping brakes and reliability of the upgrades (gearbox ect) ect ect .. You will then need to declare mods to your insurance which will poss end up more £££ than just having the sti in the first place!!!
Oh and hi every one was just brousing good old sc and wmi thought id have my 2pence worth on the wrx uprade vs sti ect hope all are well
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Old 08 June 2011, 06:10 PM
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Originally Posted by sy.
Or think seriously about selling your wrx and buying an sti by the time you have spent £££s on engine parts mapping brakes and reliability of the upgrades (gearbox ect) ect ect .. You will then need to declare mods to your insurance which will poss end up more £££ than just having the sti in the first place!!!
Oh and hi every one was just brousing good old sc and wmi thought id have my 2pence worth on the wrx uprade vs sti ect hope all are well
thats half the fun though
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Old 08 June 2011, 07:33 PM
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Originally Posted by imprezadad
Intend to buy things over time as there is no rush. I want to buy a vf35,pink injectors,filter,fuel pump, and think I might go decat from turbo back but MOT may be a problem. Then get them fitted and mapped at Thwaites as the lads on here are singing there praises. Budget is an issue hence buying used over time and seeking advice/pointers from here will no doubt help save me a few quid. I would like 300+ bhp from this and will just be patient picking up a part at a time if need be. I also think that it will be better to have it all fitted in one go and then mapped to save me endless journeys. Would 300-320 bhp be safe on the WRX as I would not drive any quicker just always wanted to get a 300+ bhp Impreza.
I couldnt say if 300+ is safe on your wrx engine. I suppose you have to consider not just the spec of the engine, but the condition its in, mileage, service history and how its been driven before. If your compression is bad and internals are worn, you may find getting more power just shortens the time before it "lets go" on you.
Ive done the same thing regarding buying bits and saving up over time, but you always keep adding to the list.... I suggest you set a budget (roughly), then decide who you want to do the work and then ask them for the shopping list. Some places can be unhappy to provide back up for their work done when you have supplied the parts. Indeed, some wont back up when they have supplied the parts. (but I wont go into that).
Hope it goes well for you though
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Old 08 June 2011, 08:31 PM
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IMO i would decat, and get it mapped, i think you'll be happy with that for a good while, then when your fed up, sell it and Buy an STi.
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Old 08 June 2011, 08:36 PM
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Originally Posted by Black Widow
IMO i would decat, and get it mapped, i think you'll be happy with that for a good while, then when your fed up, sell it and Buy an STi.
Would that produce more power than my PPP ?
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Old 08 June 2011, 08:43 PM
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Originally Posted by imprezadad
Would that produce more power than my PPP ?
as your asking, PPP is a generic map that one size fits all, which is a fairly crap, a mapper will tailor the map to your car, even as it is now you would get an improvement with a map tweak.

if you have a PPP are you running a sports Cat anyway

Last edited by Black Widow; 08 June 2011 at 08:51 PM.
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Old 08 June 2011, 08:49 PM
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Originally Posted by Black Widow
as your asking, PPP is a generic map that one size fits all, a mapper will tailor the map to your car, even as it is now you could get an improvement with a map tweak.

if you have a PPP are you running a sports Cat anyway
As far as I know the WRX PPP is just a backbox,intercooler pipe, and ecu mapped. I have had a 2003 WRX with no PPP but this still feels the same as that but is meant to be 265bhp and not 225bhp on the standard WRX.
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Old 08 June 2011, 09:00 PM
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Originally Posted by imprezadad
As far as I know the WRX PPP is just a backbox,intercooler pipe, and ecu mapped. I have had a 2003 WRX with no PPP but this still feels the same as that but is meant to be 265bhp and not 225bhp on the standard WRX.
as said PPP is money for old rope, a bit of a waste, ive been there on my old wrx, if i'd known then what i know now i'd have spent it elsewhere, i bought my first wrx about 6yrs ago, spent a shed load on it, 6months later, sold it and bought an STi instead and still have it.
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Old 09 June 2011, 06:19 PM
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Full decat 3inch exhaust for your shape with a 5inch angled rear can you can have it for £100 pm me if your interested
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