peachy wrx

should be getting a uk impreza turbo wagon fairly soon,about an R or S reg as i miss my old wrx so much!

thinking about mods already,upping the power is a must!

what needs to be done to achieve 300 bhp and what sort of money does it cost?

thanks for any info guys!

RLE

iTrader: (2)

I have a uk97 mate and went for full decat; open neck downpipe; uprated fuel pump; powertec induction; fse; samcos; hks evc5 boost controller running 1.3 boost; td05 turbo and apexi ecu. Saw me produce just shy of 300bhp (faulty boost controller though) with 290 ib torque. Hoping for a slight increase (circa 310-315) when it hits the rollers this weekend.

Cost wise I reckon about 1700-2000 including mapping (AndyF) although some bits were purchased off Scoobynet second hand.

Good luck.

TonyBurns

iTrader: (3)

Brakes, you need to change those 2 pots, they wont stop you very well with 300bhp, so your looking at upto 1k for a cheap setup, 1.5k for something like AP's.
Full decat exhaust, should set you back around 3-400 quid.
Uprated turbo as the TD04 wont cope with what you want to achieve, 600+ quid.
Some form of mappable ecu, prices can vary, just say 700 mapped.
Id also put some cash aside for a new clutch, and depending on how much torque your going to put though the transmission, possably a gearbox also.
Knocklink, around 130 with sensor.

A rough idea of costs, if not id then think about where else the extra 2.5k could go, ie on the likes of an STi V4, which is most of the way there and will cost you about an extra 2k over a uk car.

Tony

BuRR

Speak to Chris @ CCS (wrrjones on here)

he got my MY99 UK Turbo to 314bhp with bolt-on upgrades. (and a Bob Rawle remap )

911

Go straight to Projects section and real every page of Carl Davies' thread on this exact subject!
Fantastic thread on DIY 300bhp.
Don't underestimate the work/hassle involved....

911

RLE

iTrader: (2)

Forgot to add that I upgraded to 4 pot Godspeed barake set up and had to upgrade clutch as it was slipping. Still on original gearbox at the moment.

Knocklink and Lambda link also purchased and I now run on OB on every fill up!

Peanuts

iTrader: (15)

impossible

chrome

Another vote for upgraded brakes- get the best you can afford mate!


CCS has some crazily priced deals on Pfc and mapping!!!!

new boy

my my96 uk bus(sorry wagon) is happy well past 300bhp
spec available if reqd mate

ads

DreXeL

My UK MY97 was last dyno'd at 346bhp, all with bolt-on's. I have upgraded the brakes, suspension and clutch to match.

willy

MY 95 wagon,
It has just produced 287bhp and 280lb ft.
Its got a std TDo5 turbo, 440 injectors, full decat,panel filter and Apexi mapped by Andy F.
Its running 1.3 bar holding 1.1ish.
But what is most impressive is the torque curve from 2800 upwards.

There are no dips in the power curve either.
I suppose I could get a bit more grunt with an uprated Fuel pump etc.
But I`m happy for now.

*****

peachy wrx

cheers guys! this is most helpful

my last impreza was a MY98 WRX (276 bhp) so i'm really wanting 280-300 bhp which seems quite possible without going into stupid money!

i really want a uk car as i can get insured on one for £780 and i was paying £1500+ on the import! now have a 8 month old daughter and that sort of money is a joke!

RLE

iTrader: (2)

316 bhp on todays rolling road. Still got a minor problem with the boost as well so could see more. Dont know whether I'll go any further now. Guess you've got to make a decision and say enough is enough.

CyberScoob

DreXel, what mods you got on your beast to get 346bhp? As mine is at 306bhp at the mo.

Aztec Performance Ltd

iTrader: (234)

Bit expensive Tony:

fit 4 subaru 4 -pots = £250
TD05 or similar = £300-350
Bigger topmount = £150-250
fuel pump and reg = £180


Should see you sail past 300 mark.

Bob

Carl Davey

iTrader: (3)

My advice would be to buy an Import.

If it has to be a UK don't beat around the bush as i have done. Don't bother with an intercooler unless it's the larger STi 7/8 job or a front mount. My STi 6 TMIC has been the biggest waste of money for me to date.

I'd also exercise caution around the myths that are posted on here. I'd like to shake the hand of the person who sails past 300bhp on a FETD05, pump, reg + TMIC.

My car had the Power FC, FETD05, H&S de-cat, 440's + FPR, STi TMIC, filter, 3-port etc. It made 17bhp and 0 torque more than it did with just a de-cat and PPP... I'm now trying a few more tweaks (CAK, headers, AVC-R + copius amounts of octane booster) to try and push the old girl over the 300bhp mark. If i were you i'd pay alot of attention to the details and doing things properly, i.e. wrapping headers/exhaust, running OB, have nice spark plugs etc.

If you want my honest advice, go for an Import. Andy (RoRu) and Graham (911) have had stunning results from tuning their STi 4 + 3 respectively. I'd pay the extra premium and reap the benefits. IMO you're looking at 2k minimum to extract 300bhp from a UK.

Aztec Performance Ltd

iTrader: (234)

Watch this space....

Bob

willy

I think another way of thinking is the torque curve... I wouldnt want a more peaky engine just to get 300bhp... or strain the engine to get it...
A good bhp figure of say 275 bhp and similar torque with a wide power band is more more useful IMHO..
A B road run in 3rd with show how well your car responds far better than a RR plot.

just my 2ps worth.

*****

DreXeL

Here's the full spec:

ENGINE:
Andy Forrest TD05/06 -20g hybrid turbo.
Hybrid Front-mounted Intercooler.
550cc injectors.
Apexi Power FC ECU, Mapped by Andy Forrest.
Walbro uprated fuel pump.
FSE fuel pressure regulator.
K&N Induction kit.
Samco Induction Hose.
Greddy Profec e-01 boost controller.
Magnex de-cat downpipe.
Magnex de-cat centre section.
GT Spec Gen II headers and up-pipe.
TSL Firestorm backbox.
Forge Motorsport atmospheric dump valve.
Exedy organic clutch.

I also have everything well monitored, Knocklink, AFR meter, Guages etc.

BRAKES:
Brembo 4-pot calipers with Brembo 320mm Grooved disks

SUSPENSION:
Prodrive handling pack comprising Bilstien shocks/Eibach springs
Powerstation anti-bumpsteer geometry modification.
Whiteline solid droplinks front and rear.
Whiteline adjustible rear anti-roll bar
Whiteline anti-lift/castor increase kit.
Cusco Strut-brace.


I could run nearer to 400 bhp with my current spec, everything is there (fuel system, Turbo etc.) but I've deliberately kept the boost to just 1.3bar to keep my UK gearbox together. I'm going to get an STI 6-speed then run it to it's full potential.

RaymondH

My spec is pretty much the same as DreXel's except that I have a VF23 turbo and I managed 305bhp on a MY98. At the risk of stating the obvious, getting the right turbo is critical...

Floyd

iTrader: (9)

Bob, oh Bob. I'm going to have to dissagree with you again

You can't possibly be serious about 300BHP with TD05 or similar = £300-350, Bigger topmount = £150-250 and fuel pump and reg = £180 on a std UK car??? You'd be deluding the poor fools on here into thinking it's cheap and easy to achieve this power level. Are you running this with a std exhaust, induction and hoses? Not sure you'll find a decent STi7/8 TMIC for £150 anywhere now anyway. Can't imagine you'd be recommending an FSE either?

I believe that I will have the cheapest 100BHP gain on a UK car in the country, which will be reliable and tractable.

F

Fuzz

A few places to look at if you want over 350 with just bolt ons.

www.ashlyn.plus.com (Spec list)

www.ashlyn.plus.com/projects (random pictures)

http://bbs.22b.com/cgi-bin/ultimateb...c;f=2;t=000044 (how it all went together)

Aztec Performance Ltd

iTrader: (234)

Floyd mate...at least we are both consistant in our opposing views Would be worried if we were to agree on anything.

Yep am totally serious about the prices etc. AndyF seems to have no problems with FSE and you'll not need a STi8 ic for the target. £150-£200 will get you a STi5/6 ic which is good for the job.

Its not cheap once you start totting the prices up and it'd be sensible to budget an additonal £600-1000 for a gearbox rebuild.


Do tell about your 100bhp mod....

Bob

Floyd

iTrader: (9)

Bob, are you suggesting that this is going to be spec'd with the std exhaust or are you building this in too? I agree that 300 is possible with a MY99 onwards TMIC but leaves little room for later increases. I would not recommend using the car, in this spec, on track in the summer though... You also haven't priced in a remap of any sort? Or is it a Dawes device?

F

RICH WILD

You'd better shake my hand pretty damn hard then

I got virtually the same figures as 911 on sunday when we dynoed back to back.

Mine is a UK97 (granted with a lot of mods) but it still has 380 injectors, uprated pump and reg (running 3.5 bar), Apexi Power FC and FE TD05 with a silicon inlet pipe and MRT uprated TMIC, lightened pulleys etc etc

I made 378bhp @ 1.4 bar @6500rpm

I agree with your point about paying attention to the details. My headers and uppipe are ported and wrapped and the downpipe is wrapped too, I use S40i plugs, magnecor leads, and the SUS induction is boxed off from the engine with 3 separate cold air feeds.

I don't necessarily agree that you have to go for an import for big power (look at Dave Wallis, Steve Darley, John Banks, Alan G) but I agree true power doesn't come that cheap, it's not just a simple matter of a few bolt ons and whahey 300bhp.

Carl Davey

iTrader: (3)

Lo' Rich, was waiting for you to pop up in here. I think you'll agree that...
...isn't quite...


...which was sort of my point. I'm well aware how far you've taken your car on standard injectors and how far you took it on the OE ECU. I'll think you'll agree with me that 300bhp isn't going to happen without things like a de-cat and some form of boost control also.

With regards Imports vs Uk i really meant to refer to the fact it seems easier to get the numbers out of them, if only because they start with circa 60+ bhp more to begin with.

Floyd

iTrader: (9)

Hear hear. exactly what Carl said. I am dissagreeing with Bob in that 300bhp would be difficult and probably short lived with just those additions to a std UK car. Bob hasn't mentioned a decat or any ecu, mapping etc. Surely it can't be all done with a restrictor change

F

Aztec Performance Ltd

iTrader: (234)

I was addressing Tonys' pricing up of products. I didnt disagree with his mapping or de-cat figures, hence I didnt need to amend them.

Carl: 378bhp isnt quite the same as 300bhp either

My spec is going to be as follows:

FE-TD05 (wrapped)
STi 8 i/c
Bigger i/c scoop
Gruppe-s Headers (wrapped)
Helix Up-pipe (wrapped)
3" Straight exhaust
3" Closed neck d/p
Exedy Organic Clutch
ACT 4.5kgish flywheel
APS CAK (or maybe not, we'll see )
Walbro Fuel Pump
FSE FPR
Cold plugs
Waterspray
Tek3
and maybe a dose of OB

Do you think I'll make it?

Bob

Floyd

iTrader: (9)

It should make 300bhp depending on what boost you will use. Not convinced waterspray will make any difference. Why include the clutch in the power recipe? Why the closed neck DP?

F

RICH WILD

Yes, I agree with you there. I was only joking with my initial comment, just couldn't resist.

People often come to us with what I call the "Gran Turismo" mentality, where they expect bolt a couple bits on to a standard car and suddenly expect it to have another 150 horses. Quite agree 300bhp isn't quite as simple as some would have us believe down the pub and people often forget the need for safety devices such as the inimitable knocklink, afr and egt and boost gauges etc etc. It amazes me when I see cars running serious boost with absolutely no additional gauges in the car whatsoever.

On the import/UK question, yes I agree there too, a 60+ bhp deficit is a "hell
of a hill to climb" but the UKs IMHO seem to take a much bigger first step on the tuning ladder and seem to respond to those initial mods a little better.