Had mi scooby on rollers last weekend it made 240bhp-234f/lbs @5790rpm-5080rpm, its a 95 wrx jdm std, running 0.9 bar boost according to boost gauge. Is that good or about right?

Also wot sort of gain would i get from a bell mouth 3 inch de-cat system and k&n 57i kit if any, would i need a remap?

Any help would be much appreciated

 

about bang on, early had 240, then a step to 260. not sure on the decat gain, guess extra 50bhp and similar extra tourqe.

def recomend a remap, although you'll have to have a piggy back ecu, you may get away without, but tbh i wouldn't, i'd get it mapped to be on the safe side

 

You will notice a difference with a decat by way of a 3" open neck down pipe. This is always a good starting point and may add something like 20-25 bhp, typically.
A remap is not essential with this mod.
I would not bother with a change to the induction at this stage. Providing your panel filter is clean it will add little power and there are more cost effective things to spend your money on.

 

A Scott.T scoobyECU or ESL chip with a decat and clean panel filter are probably the most cost effective upgrades you could make. The Scott.T/ESL chips will raise boost to 1.1bar and adjust fuel/timing appropriately also. Should make above 280bhp with a decat and scott.T/ESL chip.
Chip will cost around £200, easy to fit yourself, theres pleanty of information on them on here - do a search for 'scoobyecu'.

After that I'd say bigger injectors, and FMIC which you'll have to have an induction kit for. You'll also need a remap at this stage to do things properly as well as some sort of boost controller. Remap (ESL's new live mapping seems to be the way to go) will be about £500-600. If your going this far you may as well put a TD05-18g turbo on also.

But be aware the first set up upgrades probably get you about 50bhp for £500, with the second set your probably talking £1500-£2000 for the next 50bhp.

 

if only! Very lucky to get half that with just a de-cat, speaking from personal experience on a car of that era.

 

Agreed.
Decat and chip should see an extra 50 without too much fuss though.

 

In 3 weeks i'm on the rollers, can't wait to see what its actually producing, this will be a 93WRX with decat downpipe, resonated centre, panel filter and Z4 ecu

 

15 to 20 Bhp increase with a decat alone, You will get no where near 50.
As discussed, Induction kit/ panel filter, (although you run the risk of sucking in hot air with the induction Kit & loosing Bhp) More boost via a Scooby Ecu / Scott T chip, Dawes Device etc & a high flow fuel pump for good measure, May get you closer to the 50 Bhp increase, but that is one hell of an expected hike in power on a budget.

You would get closer to that with incorperating a later Ecu.

People expect massive increases from a decat & it just does not happen, There is alot of Bhp'd Up Talk around.

Dean

 

I managed with a similar spec (IK instead of panel filter and full exhaust system) 255bhp.I was a little disappointed but felt good on the road.
I agree with Dean F on the decat part (i did expect big power gains and didn't get them) but i do find the turbo spools up quicker and you get the power quicker so it feels like you have more bhp.

 

I'd like to see the nice side of 260 but you never know, cars are all different, my brother got 278 with his version 2 and nothing more than a Decat system! and to put it in perspective a P1 ran just before him and got 275!

Dave

 

Lots of very good advice a de-cat system and a decent panal filter looks like the best road to go for now A re-map wil be a later project,

thanks everyone for your input

 

Why has no-one said a 95 jdm wrx has the 260 bhp version as to the earlier 93-94 wrx's 240 so yours is down on power.

 

I thaught that it had 260bhp, but been told it could be an early 95 with 240bhp it has a TD05 turbo if that makes a difference? Wot i forgot to mention was that i had naff plugs and two cracked coils, only found that out after i got home while i was changing plugs to pfr7bs from denso.

I bet your wondering why i didnt change plugs b4 rolling. its because i got them through post the morning i was at rollers.

Is there any information on the vin plate that will conferm wot it could be 240 or 260 bhp?

Any surgestions ?

 

Only the post September 95 wrx had the z4 (260bhp) ecu.
Ecu is under a kickplate under the carpet in the passenger footwell,on top of the ecu it will have a letter/number or number/letter combination (i.e. 2C,U8)

 

Cheers m8 ill av a look, am i looking for the z4 or 4z code?

 

Z4

 

Yep Z4

So that 260bhp then? Where has 20 hp gone then?

 

Don't forget the car is 13+ years old my 93wrx with a z4,decat, full exhaust and IK makes only 255bhp.
Some bits are bound to be tired and need replacing.
There are plenty of options (some mentioned in this thread) about increasing power but it's worth thinking of suspension mods and brakes first (i think you still have 2 pots which are pathetic).
R/R figures are 'pub talk' figures as long as the car is good on the road that's most important imo

 

True true, she is in standard form after all ive just got me a set of kyb agx dampers from a group buy on this site but not fitted them yet, waiting till i get a set of eibachs and some camber bolts n anti lift kit, a rear rollbar will av to be latter funds getting low, well till paid day next month. ive been thinking of getting some 4 pots but ive been told by various people that i need to change mi servo and master cylinder as it cant cope with the extra brakin force of the caipers

Ideally i would like an ap racing big brake conversion but not for a long time yet very ££££

 

Whoever said that about the brakes is talking bolloxs.
Rear droplinks are a good cheap mod.
Welcome To Godspeed Motorsport do big brake kits somewhat cheaper than AP.

 

Cheers m8 allready got whiteline alloy drop links just had a look at godspeed, 4 pot 325mm set up is perfect good price too
Looks like ill be avin a set of those in the very near future

Thanks for that m8 most kind of you to help

 

no problem

 

Got that a bit wrong mate its post Sep.94 that has the 260 bhp not 95

 

Sorry about that looked at the wrong line DOH