I'm planning on building a custom kit using t3/t4 for my ITR. OK, heres the deal, I plan to run 10psi initially, intercooled, controlled by Apexi Power FC standalone ECU with stock internals. This will be my first turbo install which I'm planning to do myself. My questions are:

1) What is the size of the stock injectors and will they be maxed out @ 10psi?
2) Is it advisable to run higher output injectors like 750cc on only 10psi. As I plan to fully build the block and run a much higher boost later, I will soon need bigger ones.
2) Is the stock fuel pump sufficient for 10psi? If not, which type is the best one to get?
3) Is anyone running or does anyone know if I can use the pre-pregrammed maps built into the Power FC initially after fitting the turbo; at least to drive the car to the garage to be tuned.
4) Does the size of the intercooler effect performance (ie., would a BIG intercooler produce more lag?)?, for instance, using one from GTR R34, if I can get it to fit.
5) Is it easy to remove the stock oil pan from the car (I presume its the only way to make a hole and do the welding for the turbo oil return line..)?

Any advice on bits to get, install and tech tips will be greatly received.

 

1. 240cc they will me maxxed out at 1psi
2. you can never have enough fuel
3. depends on who programmed the PFC
4. get one that fits nicely in the grill, really dont need more than that for low boost
5. easy

 

I was thinking if 720cc and above might effect the idling. From what I heard there are several maps already preprogrammed into the PowerFC from new and if I can use those temporarily.

How much power should I be expecting @ 10psi on a stock block?

 

They're called base maps and often they are only good enough to get you from your garage to the dyno. With a stand alone you will be able to control large injectors without affecting idle much.

 

Anyone else know about the PowerFC?? and roughly power figures @ 10psi??

 

750cc is waaaay too much fuel.

 

How do you mean by that? Correct me if I'm wrong but I could use the standalone ECU to lower the amount of fuel regardless of what size injectors I'm running right?

 

Right, but let's put this way...how many HP are you shooting for? I make 330-350hp on 440cc at a little over 80% duty cycle. 4bar FPR stock.


[Modified by mau, 11:51 PM 10/3/2002]

 

In the distant future (maybe not too distant depending on how much of a boost addict I might turn out to be), I wanna see 500hp+ with traction control system installed of course.

Anymore advice out there, pls keep em comin!!

 

If you really want a 500 whp motor, talk to JINXPROOF his car made i think 520, not sure but it was over 500. Its not easy and its not cheap.

rob

 

for oil pan removal, you take off the header, and then I think its like 18 bolts that hold it in place.

 

thats why all motor is the best..turbo theres too many things u have to worry about..but hey its always nice to have a little boost here and there..im actually pretty dumb talkn about all motor cars in a forced induction forum..i should shut my mouth now :X


[Modified by EG6 SiR, 3:48 AM 10/4/2002]

 

I think you want a similar setup to mine...first, let me clear up some mis-conceptions, before you get yourself into trouble..

1. PFC does not come with several maps...it usually comes with 1 base map provided by the dealer or no maps at all. You do all the programming or get it tuned by a Power Excel shop.

2. Big injectors are okay. You need to tell PFC what sized injectors you have and it will compensate. This is done by telling it (in percentage) how much bigger over stock it its.

3. 10psi is pushing it with stock internals...I would stay around 7psi, unless you are running close to 100 octanes.

4. The stock base mape is no good for turbo...its a straight NA map.

5. Stock fuel pump should be okay for 10psi

6. 500whp is not impossible but you need to really build you whole car up for that. Have about $7k ready for that setup.

You sound very wet behind the ears about turboing any car, let alone an ITR, so I would get a turbo or a car expert in the garage with you...this is what I did, and my car still isn't right...I have to replace rings next month because I got carried away...


[Modified by MiraiZ, 10:05 PM 10/4/2002]

 

Are you saying for 7 grand you can have a good-to-high quality turbo setup pushing 500 whp?
can you tell me what i need, cuz then ill save 7 grand up

 

We use 98 Octane here so I think 10 psi should be OK. I'm thinking about trying the VAFC hack for the time being until I have funds for the PowerFC. Wot do you think?