WRX-MUSHY

Hi what would you say the ideal BHP would be for a subaru not ott and and not standard because i would the to up the BHP on my 1994 subaru wagon so it will go a little faster so what do you think i should push the BHP up to cheers mushy.

peachy wrx

i find 300 just about right (at the moment)

WRX-MUSHY

I was thinking around 260bhp because my is around 220bhp at the moment,what do you think will i be happy with around 260bhp

Gear Head

iTrader: (2)

If you are not happy with 220bhp, who's to say that you'll be happy with 260bhp??? My sti 4 is producing 307bhp 260lb/ft torque. Would like a bit more torque but I am more than happy with the power.

ex-webby

The "Ideal" bit is slightly subjective tbh.

What you may deem as ideal would feel slow to me and what I deem as ideal would feel slow to some of the big bhp boys from here.

After owning previous big bhp moded cars, I would say the 400bhp mark is ideal and the maximum you would want for a road going 2ltr turbo car (based on driveability). But please remember that driveability is the KEY issue for a road car. Once you lose that, imo, you take the edge off the car's capabilities.

Regards,
Shaun.

WRX-MUSHY

cheers lads once i get it to 260bhp i will see how it goes from there.

peachy wrx

after 260 its gonna cost ya big time!

WRX-MUSHY

I would like to get to 280bhp but dont know what it would cost me so far i have the following bits

hks bov
blitz sus induction kit
full 2.5 decat system

what else would i need to get up to 260bhp?

New_scooby_04

iTrader: (4)

How about a remap? Just that and the Decat should be good for 260bhp comfortably! :-)

The "ideal" bhp depends very much on the driver, but I would argue that any a determinant has to be the point at which the car will retain its reliability! :-)

NS04

flat4_ire

1000 brake should do it

WRX-MUSHY

I am a bit of a rough driver now and again and i would also like reliability as well due to the car being use for my family as well so i dont want it braking down when i got my baby and wife in the car.

bigsinky

you get more power and then you get used to it, then you want more power. it is basically governed by how deep your pockets are. i would say around 400 to keep the drivability as has been said before. last year i had around the 400 mark and it was a daily driver. never missed a beat and was taken to numerous drag events including scooby shootout and TOTB3 last year. your target of 260 should be within reach fairly easily and shouldn't hit the pocket too hard. Enjoy

cheers

sinky

Delboy2

Is your Wagon of Uk or Japanese origin?

Cheers

WRX-MUSHY

It's a jap import why?

WRX-MUSHY

400bhp and you you use it as a day to day car that must be fun?

Roojai

I have the same wagon as you and I recently got 269 BHP on a rolling road.

Mods:
changed the turbo to TD05
remap
full decat
Larger top mount Intercooler
fuel pump.
Full decat pipes.

I have had it from the 220 it came with up to about 285 and many points in between. I am happy with the 270 I am getting out of it now. A good compromise between power and reliability.
c

Roojai

Also worth upgrading the brakes to 4-pot calipers. I bought mine secondhand from Grade-a for 300 including discs, but had to get larger alloys to fit them under (also 300 from grade a (with tyres)).

WRX-MUSHY

So what about the TD04 turbo which is on my wagon is that not any good?

Roojai

it's ok, good for 270/280 with lots of low down torque and not much turbo lag, but, to get 270 with one you would produce a lot of heat which is not good.

The tdo5 can provide good boost up to the redline where the td04 will not provide as good boost to the redline. So you will feel the need to change up a gear earlier and not get that feeling or ever increasing power.

It is still good though, and fine for 250bhp. You should consider an ic upgrade for your car, especially if going for high power with a td04.

To change it to a td05 is not cheap as in addition to the turbo you will need a remap or z4 ecu to get it to work properly.

hades

Personally I'd think about 320 using one of Andy F's new hybrid TD04s is about ideal. It's about as much as you can get whilst maintaining TD04 spool up, and coupled with similar torque (which Andy has managed), is about as much as you want to put through many of the gearboxes (UK particularly) and still maintain reliability. Any more, you start getting laggier and threatening the gearbox.

Better still, go with a twin-scroll 2.5, 6 speed box etc - the Type 25 has it about right for daily use with lots of poke IMHO.

Roojai

this is probably a bit more than 'upping' the output of an m-reg wagon.


I think vulnaxx99 has an m-reg wagon that is currently putting out about 370bhp on standard internals, but with a td05, headers, bigger injectors, uprated IC and ECU mod. 22psi I think!

WRX-MUSHY

If i got a td05 how much would a remap cost ?

bigsinky

cetainly was unfortunately the quest for power goes ever on and i now have between 500 - 600. Car can still be driven day to day but you need alot more respect for the car and need to have in mind what is going on with the car mechanically. new twin plate clutch doesn't lend itself to the stop start of town driving too well so i tend to actually drive it less now. still comes out at weekends though

Roojai

about 400 quid

Jay m A

iTrader: (2)

If you want reliability and 280BHP on a budget I would

Ditch the BOV and induction kit
Refit OE DV and airbox with an uprated panel filter (K+N my choice) but remove resonator in wing
Get a boost gauge
Run on Optimax and 1ml NF octane booster (the booster pays for itself WRT mpg)
Get a Dawes device and set to 1 bar.
Do an ECU reset every now and then.

That should get you at least 250 BHP for £150

If you want a bit more then

2nd hand TD05 (right angle entry) £200ish
Z4 ECU, or
Scooby ECU - rare these days for decent money but they do come up, or
Custom remap for £380 at scoobyclinic

Keeping the boost at 1bar with the Z4 will see about 270BHP
ScoobyECU at 15.5 psi should see about 280ish
The remap can liberate more if you wish but 280 is near the max of MAP sensor, fuel pump, IC, injectors etc and for the money not the cost option if 280 is your aim.

HTH

Aztec Performance Ltd

iTrader: (234)

why?

Jay m A

iTrader: (2)

The MY93-96 ECU's can only adjust timing down, so if they detect low octane it will adjust down fine, but if you get a bad batch of fuel then the ECU will not be optimised for better fuel thereafter, since it cannot adjust timing back up.

Also, with these MY import ECU's, after an ECU reset the ECU throws in loads of timing expecting 100RON and adjusts down to whatever fuel is in the tank, so if you're using OB and guestimating 1ml/litre its best to reset every now and then, since you never really know your octane in the tank, but after the reset at least you know its optimised.

One good thing about the early ECU's not adjusting up is that on a trackday etc where you want a bit of safety, you can throw more OB in and the timing won't increase, so a bit more det protection.

HTH

David_Wallis

anything over 400 is too much for the road.

it estimate my power to be rising above my 550bhp for totb 600 - 650 at a guess.. if it holds together long enough to map it

Should be fun trying though..

David