WR1 Owners Club

A while back a couple of people were asking what could be done with a standard engine WR1, I thought this may illustrate.

Apologies for the picture quality, dyno'd at G-Force, mapped on the road.

Car mods are ...
Janspeed 3" exhaust (my design)
RCM tubular headers
RCM 80mm induction (my design)
800cc injectors
GT35-P18 hybrid turbo
76mm air intake pipe
APS FMIC
Fully customised remap using OEM ecu.

This has progressively been done over a period of six months culminating in the installation of the injectors and turbo last week. The boost profile is misleading, on the road it makes 1 bar of boost by 3400 rpm which means the real world torque is higher than this.

Water/methanol injection will be installed along with a Walbro 255 fuel pump (the uprated ProDrive item struggling to keep up) as the car will be taken to a hot climate off shore for a period in the near future.

Results as illustrated ...

cheers

Bob

Out of interest, what would the cost be to set a WR1 up like this?

I'm not in a position to comment on the overall cost, an email would reveal why.

Bob

400 bhp

but what are the torque figures Bob
is it 335 ?

337 on the dyno, as mentioned on the road its higher as the boost is at max a full 1000 rpm earlier, playing with the cam timing sorted that.

Makes almost full boost even at 60% throttle, given the shortish six speed box its "on it" all the time when blatting through the gears even allowing for the pants UK 5th and 6th gearing. (personal choice is the JDM ratios which is what I have)

edited to add this is achieved using straight Optimax, no cocktails or booster in sight.

bob

Bob are RCM tubular headers equal or unequal ?

RCM 80mm induction kit this is not a inner wing caik ?
Any perticular reason why a APS or similar caik was not used?

800cc as oppose to 650cc injectors any reason as 650cc
will run 400+bhp ?

Unequal and good for 800 plus bhp
APS CAK far too restrictive and not big enough in intake diameter.
800's at 73% duty and future proof.

Bear in mind where this is headed.

cheers

bob

Nice Bob.

Very similiar figures and curves to mine, which is good as its a very similiar spec!

Also similiar to mine in that spool is later than i see on the road.

HI Bob

Nice results there Looks like its doing 1.33 bar of boost is that what its mapped for?
How would you get Torque level nearer the Bhp thought?
I guess that you are still using the standard subaru fuel pump as you will be going for the Walbro fuel pump next?

What kind of boost do you suggeust the Wr1 2.0L will take?

Cheers Dougie

dougie549 wrote:HI Bob

Nice results there Looks like its doing 1.33 bar of boost is that what its mapped for?
How would you get Torque level nearer the Bhp thought?
I guess that you are still using the standard subaru fuel pump as you will be going for the Walbro fuel pump next?

What kind of boost do you suggest the Wr1 2.0L will take?

Cheers Dougie

Dougie,

As Bob says above. the car will be producing more real world torque than shown above. You can see this because of the sluggish spool on the rollers.

Bob maps on the road, not the rollers (i.e where you are going to drive it), so if the dyno operator / dyno cant recreate road loads exactly then you will get anomalies in the figures.

I run exactly the same turbo as above, Mapped by Bob. my dyno figures are 405BHP/342 ft/lb with 1 bar of boost showing at 4200 RPM on the charts. On the road i get 1 bar at about 3700 RPM!

On a 2.0L at this level on a WR1 i would expect myself to see torque in the 360+ region, but it would be interesting to see Bobs opinion. To get significantly higher torque than that (at 400BHP) im afraid you are looking at a 2.5L

Hi Mark

Yip saw the bit about the Torque being higher on the road than the rollers, just wondering what his thoughts were to level of torque on the road.

Yip totally agree with the mapping on the road compaired to the rollers at least you get the proper feel for the car then, i us Sam Ellaser to map the P1 just now who Bob knows quite well, and the Link i am using just now was one of the first ones in Scotland that he mapped all be it on Alan Gs uk scoob.

Just thinking of the way and power to go if we do ever manage to get a good deal 0n a Wr1 that is. I would be happy to get 360bhp and 360lbft of torque, as that would make for a very good reliable daily car with plenty of ooommpf, and if your getting the power at 3700 rpm on the road thats spot on then

No use going down the 2.5liter route for me as it can be a very pricy excersice as i have seen it done i would rather wait and get the My06 Hawkeye with the 2 stages of PPP that prodrive are selling.

Cheers Dougie

Hi, torque will be nearer 360 for sure, maybe even a bit above, this car made full boost 1000 rpm earlier on the road. It makes 1.38 bar boost mid range on the road.

That Link ecu has done well, I very clearly remember the day I flew up to Scotland and mapped both Sam's and Alan G's cars, Alan wanted his done fo 95 ron, Sam went for 97 ron. After seeing the difference in Sam's car I think Alan "sort of" regretted his decision.

A std EJ257 engined vehicle will always be a "trickier" car to tune as the pistons are a weak link.

bob

Bob Rawle wrote:
A std EJ257 engined vehicle will always be a "trickier" car to tune as the pistons are a weak link.

bob

Are the standard pistons on the 2.5 weaker than on the 2.0, or is it just the make up of the engine that make them weaker if the power is increased?

Hi Bob

Yes those kind of figures are about the peerformance that i see as best every day driving and good kick if you need it

Yeah Alan deffo regreted getting mapped for normal 95 ron, but heay look where he has gone since then

Chris i think the point is that there is less material left on the block after boring it out to take the bigger pistons, but there is other ways round the strength side of issues

Well bob if i do go down that route of modding and i do get a Wr1 soon i think i will give you a bell regards mapping

Cheers Dougie

I believe the piston rings are weaker on the 2.5, but I may be completely wrong on this.

The pistons are the weak link, piston ring lands (not rings) tend to break up causing severe det events which can melt things.

Its fair to say Alan is a shining example of what can be achieved given determination and a desire to succeed, most people would have given up on things long ago but not him.

best regards

bob

Hi Bob

Its fair to say Alan is a shining example of what can be achieved given determination and a desire to succeed, most people would have given up on things long ago but not him.

Maybe something to do with him being Scottish and stuborn with it

Cheers Dougie