Front Mount Intercooler, brakes, cage, seats, tyres and coilovers- you will be happy!

 

I have the 2 pot calipers stil... And I'm thinking about upgrading yes. I don't have to push the 400BHP limit, it's just a thought. I will see what happens when the car get mapped. the car has windup windows and the AC is out!

And it will always be a track toy So I don't have to think about driving it on the public road that much. A roll cage is also on the wanted list in the future.

I have allready ordered the 20g, but I can still choose to set it at a fair amount off boost, to keep the engine in a better way.

Grant74: the car allready has got the FMIC (front mounted intercooler). Tyres are Falken RT-615 205/40-17, so they should be good. The car has allready got performance suspension.

 

z32 maf easier as it bolts to original filter / maf pipework.

I have replied to you email again

Simon

 

Oil cooler also a good idea, and helps keep extra fluid in the system. I have also had a baffled sump fitted, to keep a good supply of lube to the engine, but also looked at the accusump systems which seemed a good solution, as well as easy to fit with an oil cooler.

 

I have thought about a oilcooler aswell, but everything have to come at the right time.
Then I will most likely go for the Z32 maf then. Thanks Simon.

 

It is a sad state of affairs when someone comes on asking for advice and gets very unhelpful responses and someone else jumps on in an attempt to sell their turbo.

Depending on the spec and manufacture of your TD05 20G it is unlikely it will make 400 bhp.
What fuel will you be running?
On 99 RON Shell V-Power these turbos typically do around 380 bhp, some a little bit more but there are a lot of underperforming examples on the market at present.
400 bhp requires 550cc injectors. So 380 bhp is well within the capability of the injectors you propose. Next size up is 740 cc (side feed for your application) capable of comfortably over 500 bhp on 99 RON.
Apexi Power FC will do your job but it retains the MAF Sensor. If you go to a Simtek, apart from being a much more capable and refined ECU, you also loose the MAF sensor. That has several advantages, not least that you make the induction system easier and simpler to mount a large air filter.
If your engine is already working on your VF24 why do you want to change the head gaskets? If they are currently OK stay with them. You are not going to operate at much more than 1.5 bar with your O/E STi pistons are you? The time to look at head gaskets is when they start to cause problems or when you decide to go forged pistons and steel rods for an even bigger turbo.
At present the limit is probably O/E rods and pistons and certainly not head gaskets.
Z32 if you are staying with Apexi.
The O/E inlet tract with the right MAF sensor is already capable of a long way past 400 bhp.
Mapped properly, run on the right fuel, oil and serviced regularly you can get a lot of reliable service from what you have at 380 plus bhp. At that power level, even on track, it is very unlikely you need an oil cooler but if you want to find out for sure, invest £50-£70 in an oil temperature guage or for value for money and more information, a dual oil pressure and temperature guage for a little over £80 for a quality item.

I hope this helps you.

 

Hello Harvey,

I will be running RON 98 with added E85. I might go over to E85, since this car is a track car and not a daily driver. Thats why I choose to go witht the 800cc injectors. The reason I'm going with the apexi unit, is because nobody in norway does simtek or ESL live. It would be stupid to get one of those ECU's and when I want something changed, then I have to get somebody fro the UK to come over and do a remap. I don't want to change the head gaskets, it was just a question if I need to change them or not. No I didn't plan on going over 1.5 bar for now. You reccon that wil stil be ok with the OEM internals? are the forged pistons from subaru that bad? So you think I should just order te Z32 maf and mount it on the OEM inlet tract? The reason for wanting an oil cooler is that I have owned a MY00 GT(wrx) before, and that was running at 1.5 bar with FMIC etc..... And the oil temp was sometimes very high on track days. But what was actually the worst, was the water temp. The car boiled.... Do you have any of those dual gauges?

Thank you all!!

 

Mine went hugely off the 160mph clock ... at the recent 30-130 day True 158.6mph & the needle was stuck against that little spindle that prevents it carrying on back round again!

TX.

 

740cc injectors even with Methanol are adequate for what you want but no matter, especially if you already have the 800cc side feeds. I full agree with your reasoning for the Apexi Power FC and you can run the Z32. An alternative inlet tract in silicon is only £125 for a good reliable one but the OE inlet tract can handle big power anyway.
OE STi pistons will handle 1.5 bar mid range tapering a little bit at the top in my experience but the weak point of all these Classic engines in my experience is the pistons followed by the rods. Generally by 400 bhp it is worth rebuilding the engine with forged pistons and rods. That said I am running 420 bhp on OE STI 3 pistons and have been for thousands of miles.
If your radiator is boiling over there is an underlying problem and it is no wonder the oil gets hot. These radiators need replaced after a while to maintain their efficiency. Once you have water temperatures under control you can consider oil temperatures but chances are you are wasting money if you fit an oil cooler without checking temperatures first.
I have a dual gauge here and I will send you a photograph but you can buy direct from Racetech or one of their dealers rather than me be piggy in the middle.

 

Then I will buy the Z32 maf then. It was on the previous car the radiator boiled. I haven't tried this car on the track yet, maybe I will next weekend. I will look for a dual gauge I like then.

I did a G-tech measuring on the car last weekend and the graph showed 311 BHP and 430 NM on 1.1 bar. Pretty good result on only 1.1 bar I think.

The TD05-20G has arrive, now I have to order the injectors. I haven't decided what brand I should choose. But it looks like either, SARD, PE or deatschwerks.