Yesterday I finally got to do a bit of tuning and was able to get the boost up to 15 psi and the RPM's to 9000 ........... , all I can say is WHOA!!!! , she pulls so hard that I get scared and back off before I even get to 7000rpm (not to the delight of my tuner!!) , the acceleration is like nothing I ever felt before (My friend with his turboed HONDA found out the hard way ) . The sound of the bridges when the start to "work" is soooo beautiful to say the least , I am quite pleased with the results of all my efforts , thus far .

Now a new problem , not enough fuel !!!! , the A1000 seems to be almost out of capacity , I run 4 - 850cc's and 2- 1300 cc's and they are hitting 88% duty cycle !! at 15psi and 9000rpm , I am looking into swappin in a pair of BOSCH 044 pumps , anyone know anything about them ? , will they flow enough for 25-28 psi ? .

 

What kind of pump are you running now and FPR/psi??

 

I am using the AEROMOTIVE A1000 pump and a PAXTON 1:1 FPR , my static fuel pressure is 37psi . As boost builds , so does the fuel pressure , until a max of a little more than 50 (its supposed to go to 52psi with 15 psi boost) , then it starts to fall off to about 45psi as I go up in the rpm's.

 

Isn't your base pressure a little low? I don't know but I thought most people ran higher then that?

 

my base is about 35psi. I run 2 550's and 2 1600's with a walbro pump and had PLENTY of fuel on the dyno

 

If you check this fuel calculator out and input your mods and you are hitting 88% then you are making some crazy ******* power, AT 15 PSI. Something doesn't seem right?



fuel calculator

 

Yes, but if you account for the pressure drop, it only comes out to around 500rwhp which is very doable on the bridge and that turbo at 15psi.

 

I would suggest turning your static fuel pressure up to 45 psi.

 

Not if he is already having pump problems. That would just make the pump flow less.

 

I think KSP Engineering ran a couple of those and they're making around 700rwhp, so I think they would work