Hi all,

I have UK WRX02

Decat HKS Hyper
HKS induction
HKS dump valve
Platium Plugs
Tek 3 mapped by Bob Rawle.

Guess I am doing about 275bhp at the mo. Ideally I want about 350-360BHP.

Thinking of new turbo more likely VF34 or maybe VF22 or TD05 20g.

Questions are:

1. Which turbo is the best for my car?

2. Will I need bigger injectors and bigger fuel pump to go with it?

3. I heard I might need fuel reg as well.... do i really need it? some says yes some says no!!!???

4. Is it recommeded to get headers too? or just up pipe will do?!!

5. I will likely do the mods b4 remapping again. Will i risk high on engine blow if i drive the car 100 miles to Bob Rawle for remap?

Any help is appreciated.

Mike

 

I only have experience of the 20g, but to get the best out of it I think you will need the mods you state.
Cracking the 300+ to 400 barrier is expensive and not simply the turbo.

Graham.

 

I ve just had some work done to my bugeye wrx and all I can say is talk to Bob, I ve just gone from 280 ish to 300 + and I can't believe the difference

but going from a td04 you sure do notice the lag, I think that a 6 speed would help and I only went to a vf35

 

350-360bhp

I've had the VF22 and the TD05/20G

You cant get that sort of power on a big standard VF22 - in fact the bearings are very weak - so you'd need a modified VF22 from say Turbo Dyanamics

I sold my VF22 MD195 about 12 months back which would have done you fine!

Having been at this stage I can tell you categorically that:

1. You definately dont need to change headers/up-pipe (I had much more than that power before I changed them)
2. You dont need an uprated fuel pump or a regulator

3. YOU DO need bigger injectors.

It was above the 360bhp mark that I put on a FPR and an uprated fuel pump

It was above the 400bhp mark that I decided to change the headers (unfortunately at the time I chose the wrong ones - GruppeS - Dont even go there)

and I changed the Turbo from a VF22MD195 to the 20g - which gave a noticeable power increase - maybe its because it spooled quicker than the VF22

In fact for 1.3-1.4 Bar I would say that the td05/20g is a far better turbo than the VF22 - it was problematic on my car because I was running too much boost through it

To be honest - it depends if you want to stop where you are, or can accept a bit more lag - if you can then you want a gt30 with a p20 exhaust housing - this run at 1.35Bar will give you about 370bhp no problem - and it will go on to well over 450bhp should you want more power later on

If you want to settle at 350-360bhp go for the td05/20g

 

I thought the 20g was capable of over 400bhp?It will be alot more laggy than a vf34,go for a vf34 if 350bhp is all you will ever want.

 

Thanks guys for the replys.Fangoria,

Do u have wrx02 aswell?

So u r saying i need injectors, i thought we need bigger fuel pump to go with it! Guess i dont bother with fuel reg as standard can cope ok.

I thought about gruppes-s headers... Not anymore!

Thanks again guys but keep coming with more info... cheers.

 

Mikeswrx02

YHPM

Martin

 

You should uprate the fuel pump in any case but don't bother with the reg. You will possibly need to consider STi 503cc or even 650 cc injectors depending on how far you go.

bob

 

Thanks Bob

Will defo get sti injectors and uprated pump.
Will phone you to book my car in as soon as I have all those goodies on my car.

BTW Bob, what sort of waiting list/time on for a tek3 re-re-map?

 

No- I have an sti5 and a wrx04!!!

Ecutek is well worth while - made a huge difference to the spool up which the wrx's seem to suffer really badly with - oh so it spools below 3000rpm - but the gear ratio's are such that this would be circa 4000rpm plus on an sti!! - i.e. the wrx is incredibly laggy in standard form

Another comment on the td05/20g - no it wont give over 400bhp (not on a 2 litre unless you run race fuel or methanol mixtures) - it is really a 370-380bhp Turbo max on NF with Booster (unless you want to go to an over-optimistic RR - we know which ones they are- you try getting over 400bhp at G Force on simple Optimax!!)

Just listen to Bob - he will point you in the right direction with honest, to the point advice...........

 

Re mods - if your going to drive 100 miles - take it very steady and drive 'off boost' - you should be ok

 

Mikeswrxo2

I'm not sure what Ninnybobs' has PM'd about but it will be sound advice

Midlife.....

(MY02 bugeye)

 

Hi Midlife,
Ninnybob's have given me great advise. Thanks.

 

Thanks alot to Fangoria and all others

 

 

If you speak about Andy's 05/06-20G, it can make well over 400bhp on NF. I would say 450bhp is the efficiency limit. The problem the WRX has to face to are the inlet manifold and valves/cam which are unadapted to such a power.
Another thing you have to think of is the FMIC. Don't expect such a power with a WRX on TMIC.

 

You could make your power target with a FE-TD05-16g. I did (352bhp), with supporting mods. Is detailed in the 'projects' section.

Fangoria: what was wrong with your Gruppe-s? Were they V1 or V2?

Bob

 

bOB'S

V1 - but if these people want to put crap out - hey maybe they sorted it on V2 - but 'once bitten twice shy' they say! - I got some excellent replacements from the USA GTSPEC 2 Gen from a distributor in Scotland for £425......

XNWRX

450bhp on Optimax and NF.......... FPML on a td05/20g (well yeah maybe at Well Lane)

You wont get over 390bhp on this Turbo with Optimax and a full bottle of NF at G force (and thats running it right on the limit, not too high on the boost and with loads of advance)

and it gave 420bhp with race fuel (several more degrees of advance) - sure it was rapid but 450bhp - if that were so I would not have changed to a much bigger Turbo - a Garret GT30 (which will give me just over 450bhp on Optimax and NF)..........

and I've had more maps and modifications than hot breakfasts with Scoobs!

 

Steve, you can't rate the TD05-20G turbo solely on your own cars performance, I have ran it to 435 and 440bhp at different rolling roads, I have also (on the same rollers) struggled to get it above 380bhp, it depends on the car.

Andy

 

Fangoria: V2 were much improved over the V1. Is used by many on here with no reported probs (that I know of).

Bob

 

Andy,

So the less experienced understand the differences, can you put the figures you quote into context, and give the type of fuel. boost run, and any other relevent info, for both the 380bhp, and 440bhp results.

Mark.

 

Sure Mark

The 440 and 432 bhp results were achieved on a 95 WRX RA with full supporting mods including a very free flowing induction system, fuel was Optimax with 10% methanol added.
The <380 bhp was actually on a dyno dynamics in the states, similar spec 99 car running 118 octane race fuel, just wouldn't make the same bhp for no apparent reason ?

I have had other 20G cars in the UK that have made between 380 and 420, the variation could not always be attributed to the fuel used, Alan Garrod made 415 bhp IIRC on optimax, Harvey recently made 403 on race fuel, Steve has made 420 on race fuel.

The point I was making was that similar cars, with the same mods and same turbo can make different power figures. You can't just say what Steve said ie "You wont get over 390bhp on this Turbo with Optimax and a full bottle of NF at G force " because some cars WILL make more and some will make less.

Andy