Just ordered 2 GT supercar Fuel pumps. ? inside

[evil04cobra]

I don't think you'll need a re-tune, Gene. The PCM will duty cycle the FPDM based on the Delta pressure required as signalled from the FRPS. And since you are getting a FPDM modded to handle the extra current from the GT pumps, I am sure you'll be fine. If anything, you'll have to cut back drastically on the added voltage from the BAP.

Cheers,

PARKER

[Gene]

Mike, give me a call buddy.

[Screamn03]

Gene, you'll need to retune your fuel pump voltage table as it won't be correct with the GT pumps. Since the GT pumps are physically able to supply more fuel you will need to fine tune that table.

The PCM looks up the correct voltage to send to the pumps based on two things, Target_RAP(x-axis)and calculated fuel flow (y-axis). With bigger pumps you will have to send less voltage to the pumps (compared to the stock pumps) to supply the same amount of fuel flow.

The car will start and run and drive around but if you datalog pressure drop across the injectors you will most likely find it going up and down as the PID part (I still don't understand this part fully) corrects based on the delta_p being read by the FRPS.

This returnless shit is a trip :)

[Gene]

Gene, you'll need to retune your fuel pump voltage table as it won't be correct with the GT pumps. Since the GT pumps are physically able to supply more fuel you will need to fine tune that table.

The PCM looks up the correct voltage to send to the pumps based on two things, Target_RAP(x-axis)and calculated fuel flow (y-axis). With bigger pumps you will have to send less voltage to the pumps (compared to the stock pumps) to supply the same amount of fuel flow.

The car will start and run and drive around but if you datalog pressure drop across the injectors you will most likely find it going up and down as the PID part (I still don't understand this part fully) corrects based on the delta_p being read by the FRPS.

This returnless shit is a trip :)

I know, I'm having second thoughts and want to go with the PHP return kit. The shitty thing is, I'm going to have to buy the x-cal2 to data log everything that I want (predator does not have that many options) and have James re-tune for the turbo.

[Dan]

I have one of thoes in stock Gene

[Gene]

I have one of thoes in stock Gene

Damnit Dan! LOL! Stop making me spend my kids tuition money. What does it come with and how much? So far, I have the Modified FPDM and GT pumps. Can I still use those? Also, shoot me a pm for the price of an xcal2. I'm ordering one tomorrow, so I thought I'd give you a try first. Actually, I'm ordering a bunch of shit tomorrow. Mainly the fuel system upgrade and xcal 2. MD motorsports has a pretty sweet fule line upgrade with -8 line from the hat to the stock rails and a highflow filter for 5 hundo. Gene

[Dan]

335.00 in stock this is for a blank one so you can down load your own program in to it.

[DRI_Rob]

yea you will need to do a retune as well as pick up a zone-5 modified fpdm which we do have in stock at our shop here.