Quote:
Originally Posted by MANDALAY
Thanks for your comments 
So in simple form
Walbro fuel pump
Bigger injectors >500 cc
Colder spark plugs
Now you believe on 6 psi the standard ECU might be able to cope ?
And what happens to the Factory regulator on the fuel rail ?
Also if i take it in stages can l install the Walbro first without doing anything else ?
Why notjust yse the 3SGTE fuel pump and injectos as the factory turbo makes morethan 6 psi ?
Last ,the amount off boost is that determined by the wheel on the SC .
Does Rotrex do that calculation |
1. Standard fuel rail 'might' be a 1:1, simple test - put a fuel pressure gauge on and apply pressure/boost to the vac port on the regulator. If it goes up/down 1 psi for every psi exerted you know its 1:1 and don't need to change it
2. Yes the ECU 'should' be fine on 6-8psi as long as you are running larger injectors. But if running the oem ecu you don't want to get too crazy with injector sizes as you'll loose low end and may have idle problems due to over fueling on. You may want to consider 440cc injectors, as they would still leave you a 10% flow cushion at the top end. (It's not 'ideal' but not that bad either.)
3. Yes, you can change the fuel pump whenever you want.
4. 3sgte pump would be fine, it should flow plenty of fuel. It's not who makes the pump, its just about getting a high quality one that will flow enough for your engine's requirements.
Quote:
Originally Posted by MANDALAY
Your thoughts if l did it in stages
1, Can l put the fuel pump in tank and then continue driving the car until next step ? then i'll
2. make necessary brackets and piping.
3. install the intercooler.
4. install injectors, continue to run the car then last install
5. ECU
6. SC
7. IF im going low boost which is half of that of the turbo, How does the turbo get away with the stock injectors , fuel pump ?
8. Im not chasing maximum figures at all. But how much PSI can this engine handle.
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1. See above
2/3. Yes, but low boost s/c setups usally don't need and intercooler. 95%+ roots type eaton chargers dont need an i/c of some sort until really ripping them along.
I'd talk to the guys at rotrex and see if they have figures on how much heat they put into the air charge at lower boost levels like 6-10 psi. The heat may be minimal and not require a s/c. - saving you money, time and hassle.
4. No, must be installed with s/c or ECU to tune them if not running extra air to match with them. Otherwise you'll loose driveability and fuel efficiency (say goodbye gas mileage...).
5/6. Should be installed same time as 4. The exception being if it's a powerFC or piggyback computer that will not make any changes to the OEM fuel/timing control until after installing the S/C.
7. Turbo doesn't 'get' away with anything. Most veh's are semi conservative for safety reasons and you can 'get away' with adding extra air volume via forced induction. Most of the 'low boost' aftermarket kits (ie Greddy) give you a crappy (imo again) FMU to try and bandaid the tuning side of things.
But a force inducted set really comes alive with proper tuning of fuel and ignition to match. You can gain a LOT of power there, as well as a lot of reliability with a good tuner.
8. The engine can probably handle upwards of 30 psi. But that is a MISLEADING statement and thought. It's not about the air pressure/psi the engine can handle, it's really about the overall 'volume' of air being forced into the engine that you need to consider. That's what compressor maps are for, to tell you how much volume the item will be able to force in.
In example:
You could rock a t25 turbo @ 10psi and be fine as it will only be able to flow enough air to get you to 250-300 hp....
But if you try and run the same 10psi on a t60 turbo it could be enough air at IDLE to blow the headgasket.
p.s. I've seen 3 headgaskets pop at idle on a turbo setup where the idiot that owned the car overran the turbo and didn't tell anyone. I sure was tired of swapping engines cause we kept thinking he gave us bad engines. The 4th one we left in and told him to go away.
Quote:
Originally Posted by PHOENIX
I think the standalone will be your greatest power adder with the SC.
Remember you can always get different pulleys for different power options although you are limited to the amount of power. However, once you get everything together, your greatest power adders aside from the SC and Standalone would be.....
(not breaking the seal)
Phoenix Power Manifold
Exhaust
Throttle Body
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Possibly, yes, yes and yes.
Standalone can help produce more power, but that's dependant on the tuner.
A great flowing exhaust system can net significant gains with little additonal stress to the motor. Remember, engines are nothing more than air pumps. Good headers can make an awesome difference.
Throttle body can help, but on force induction motors are usally the 'last' thing to worry about.
Reason being, as engines are air pumps. The more air you force in, the more air you have to get rid of. Exhaust can make massive differences.
Andrew