jodka

Im looking to buy an induction kit for my impreza, can anyone advise the best one to go for!?

Bubba po

Don't put one on a 99-00 classic, the MAF sensor will more than likely go **** up and cause you all sorts of problems.

jodka

I have a 2005 WRX UK300, any advise?

GC8

Yes: dont waste your money on a ****e 'induction kit' that serves no purpose on an Impreza. Dont bother with an equally pointless VTA dump valve either.

Hope this helps.


Simon

Graz

Yes, you can kiss goodbye to your warranty if you fit one .

As a general rule induction kits in Impreza's cause more trouble than they are worth. The original Subaru filter and pipework is good for well over 300bhp. It's only really necessary for high power builds.

As mentioned induction kits can:

a) contaminate the MAF sensor causing incorrect readings -> lean mixture -> det -> blown engine
b) upset the airflow over the MAF sensor causing incorrect readings -> lean mix....
c) cause the MAF to fail due to vibration causing incorrect readings -> .....
d) unless properly ducted and / or boxed draw warm air in from the engine bay instead of the cold air feed you originally got from the Subaru pipework -> increased charge temp -> det -> blown engine

Just my two pence worth all IMHO etc.

Bubba po

I would like to have put that. Do you think the fight's going out of me?

jodka

I was thinking of a HKS Racing suction kit, but looking at what Graz has written they maybe more trouble than they are worth!?

I realise it would void my warrenty, but just ichin' to do some mods!

Also had thoughts of a Blitz SS dump valve, but from what I've seen a fair few people have the Bailey dump valve fitted. Can anyone advise on this?

Thanks for your advise.

Bubba po

GC8

After 30,000 constructive posts, you're spent Bob! Time to take off those leather trousers and get something in beige with a sensible elasticated waist.....


Simon

jodka

Ok you will have to bare with me I'm new to this.

GC8

Jodka, I will give you some serious advice, but Im not sure that youll want to hear it. Dont do anything to your car unless you understand why youre changing it. 'Induction kits' and dump valves are pointless, you might as well fit furry dice. In fact; 'induction kits' and dump valves are the new furry dice!

jodka

If induction kits and dump valves serve no purpose on impreza's why are there so many tuning companies offering them?

There are also alot of impreza's out there with these mods.

What things should I be looking for/at to get a bit more power?

Bubba po

Because people will buy the dream of increased performance, for the same reason that misguided splitarses buy Loreal revitalift with ceramide-r, microliposomes and a load of boswelox, thinking it will do some good.

WR-one

ive had a roger clarke induction kit and samco induction hose fitted to my MY05 T20 plus powerstation remap - does make a noticeable difference if you can stand the induction noise! - probably better value on the T25 where the standard airbox chokes it. Would look at other mods first - exhaust and remap I guess.

GC8

The heart of any increase in power will be an ECU re-map, with either a sports cat or a full de-cat (depending on what you have already) and ultimately a replacement turbocharger that can pump more air.

The best way to make your car faster is to improve the suspension and brakes..... Itll be worth tens of horsepower cross country.


Simon

scoobfan

Sell it and get an STI

Rob

jodka

I appreciate your advise and if people that know what they are talking about advise that they are a waste of money I won't bother with them.

As I said before, I'm new to this and the only way I will find stuff out is if I ask questions! As stupid to you and others as they may be!!

jodka

[QUOTE=GC8]The heart of any increase in power will be an ECU re-map, with either a sports cat or a full de-cat (depending on what you have already) and ultimately a replacement turbocharger that can pump more air.

The best way to make your car faster is to improve the suspension and brakes..... Itll be worth tens of horsepower cross country.


It is fitted with the PPP so I'm assuming the ECU has already been re-mapped?

Graz

Did you get the Prodrive Performance Pack (PPP) with your UK300? Subaru were/are giving it away free on new cars.

Personally if I'd just spent all that money on a new car the last thing I would want to do is void the warranty. If you haven't got PPP then it has got to be worth thinking about, it gives good performance gains for the price and doesn't affect the warranty. After that what about a set of Prodrive springs if you have money burning a hole in your pocket.

The main reason for getting a VTA dump valve is for the whoosh noise, it won't make any difference to performance, the Subaru re-circulating dump valve fitted as standard is very good at doing its job so no real need to change it. There are issues with VTA dump valves as well, though not bad as induction kits. Problem is when the valve vents, as the air is no longer recirculated the engine mangement reads this as 'used' air and injects fuel for it, not much admittedly but it can wash down the cylinder bores and contaminate the oil.

Graz

Ah, interrupted during typing and you beat me to it (damn w**k ).

Yes PPP is a sports exhaust, possibly some revised intercooler piping and most importantly a re-map. That re-map is tailored specifically to the other modifications involved with the PPP so slapping on an induction kit can really upset things.

jodka

Yes the PPP comes standard on the UK300, which I think takes it up to 265bhp.

I just would like to get it to around the 300bhp mark. I'm not thinking of the warrenty, just a bit more power, which I know is a bad thing cos it could be costly.

Thanks for your advise it is appreciated.

Any idea how much the prodrive springs will set me back?

tath

also, the HKS as apparently as effective at stopping particles as chickenwire.