What turbo and engine upgrade options have i got for my splitscreen :)
 

Hi everyone i own a 1958 vw splitty with a phase 2 wrx turbo lump in. currently standard but looking at doing some alterations to reach around 350bhp what are my options. it is running a td05 at pressent can anyone give me some advice. im thinking bigger turbo, sti5 heads and injectors, parralleling my fuel rails up, groupes exhaust manifold and up pipe is there anything else. not after spend the world. cheers scott

With the TD05, 440 injectors, decat, and some mapping sholuld be good for 330 bhp ish. You wouldn't need to do a great deal for that. But for 350... You are not far off with that list.

What management system does it use?

Any pics? Sounds good.

Took the words right out of my mouth. I was just writing to ask the same..:D

Hope your thinking of sorting the suspension out!:)

Looking forward to the pics

cheers guys here are a few pics. So what upgrade of turbo could be most cost efficient for myself? newer twin scroll? would light weight pulleys help?

http://photos-c.ak.fbcdn.net/photos-...80402_4176.jpg


http://photos-e.ak.fbcdn.net/photos-...80404_5824.jpg

TD05 - 18g/20g would be my suggestion. What management system does it use, is the ECU flashable? IMO pulleys do fook all apart from look shiny.

Nice looking camper, but where is the intercooler fitted?. As your going to struggle with inlet temperatures raising the boost pressure with a top mount fitted with no air flow.

You can get 350bhp on 440 injectors (with a walbro 255 fuel pump) which are what the std ph2 ones should be, are they yellow, ph2 Sti injectors are pink/

TD05 16G should get close to 350, change only if it is imperative that you must see 350, and like has been said, an 18G would do just fine for this application

You don't need Sti heads for 350

You wont need aftermarket headers either but a set of ported std ones from Harvey Smith will see you well

Parrallel the fuel rails for safety not power, you can still do this and use the std FPR

Have you got the Std WRX ECU, what year is it, If it's ph2 then it should be MY99/00 and is remappable with the Ecutek software, just see a reputable mapper - Bob Rawle, JGM etc

Intercooler - has been mentioned, important is this, needs to be big in this application i would have though and where has it been put at the moment

hi there
today i have found out it is actually a phase 1 engine with 4 plug ecu. on the ecu it only says:
J1
22611 AA740
A11-000-RG1 1205
Any ideas

i also am running the 16g td05.

Not sure what ECU that is. In bold blue should be a letter number (eg Z5 / Z4 / U8, there are more also), it'll be the biggest digits on the lid of the ECU. In this like it says SB for example.

SUBARU IMPREZA WRX TYPE RA ECU SB 93-96 5TH INJECTOR on eBay, also, Subaru, Car Parts, Cars, Parts Vehicles (end time 22-Jan-09 19:13:23 GMT)

Anyway. What I am getting at is this. All 4 plug ECU's can be mapped by adding a chip to the circuit board, this new chip is then mapped. So no need to buy a whole new ECU. There are various chips available, one of the popular ones the ESL live mappable chip. See here ESL Live Spec

With the phase 1 engine you should have grey 380 injectors. These are good for maybe 310bhp at most, don't think any more than that, and they'd be running at the very end of their capablilties.

As said the TD05-16g should see you pushing toward 350 bhp, again it would be screaming. 1.4bar ish max on these I think. A different turbo and build could see you running for example 1.3bar for the same bhp.

No way is the right way, you just need to choose what suits you best or your budget. Give a few tuners a call and see what they can offer you.