hey guys. running my s366 with 1000 primarys and 1600 secondarys.
street ported and all.

Getting ready to get tuned on c16 and im thinking ill neeed more fuel than my one Walbro.


what do you guys suggest to get.

2 044's?


planning on 27psi so ill need the fuel.

 

Dont know why i have always liked 2 Supra pumps.

 

whats your rwhp goal?

 

You are thinking right.

Knowing your RWHP goals is imporant. There are essentially two schools of thought when it comes to pumps.

One big boy - The benefit of one pump is that if it fails, you will immediately know. Depending on your power goals there are pumps that will supply 500whp with no problem. The Stealth and Walbro 400 should both do this. However, if you are going higher, you may need dual pumps.

Dual pumps - This will obviously get you there. Even dual stock pumps will put down some serious flow. The issue here is that if one fails, you will not know. The other will keep the car running until you run lean during high boost. Bad day for your engine. If you are shooting for the stars then you have no choice but to go with dual pumps.

 

Or you can always do what i'm doing..

Run dual in tank pumps. But have one on a toggle switch. This way if you can run 2 tunes. One with a single pump and a high power tune with duals. I'm running dual bosch 044's =-)

 

rewired single Walbro 400 and if you need more add a Kenne Bell Boost-A-Pump

Xcessive lower manifold with 4x secondaries.

 

Or if you have basically any ECU other than a PFC, you can use the engine failsafes contained in the software to monitor fuel pressure and can program protective measures if the fuel pressure drops.


Just make sure you are using a good check-valve in the system to prevent backflow.

 

MY WHP Goal is 540 ish maybe 530... iwas thinking of just running a aeromtive a1000 to fuel this whole system. 350$$ and im essentially fueled.... i believe... and yes i do have a stinky PFC

 

+1

Overall, forget about whp numbers, they have too much variables. Look at the peak compressor flow rate, S366 will do over 80 lbs/min. That, can translate to 700 HP... At about 11 AFR, and boost being around 30 psi, you will need pump which can support over 300 LPH (450 lbs/hour) at discharge pressures exceeding 80 psi (assuming 43.5 psi base pressure).

Walbro 400LPH with voltage booster will support these flow rates. Dual pump setups have too much flow for these power levels on gasoline, which also can be bad thing. For example, dual parallel 044 setup would be flowing almost double of required fuel volume at peak power. One pump could be turned off, but still, at any situation apart from WOT, hot fuel will be circulating in whole system and then it will start to cavitate at pump inlet, not good...

Current injector setup should support about 600 HP at 43.5 psi base pressure, substantially more with higher base pressure, but upgrading to ID2000 secondaries won't hurt.