Changed HPFP,more power?

AJ335 · 12-15-2010, 02:22 AM

last saturday,while I was driving on the high way,and I switch to sports gear on to have some pull.however,the car starts shaking,and the next thing i know I had a engine malfunctioning. So I took it to the dealer with my Dinan stage2 ,I was worried that the Dinan flash will mess up my warranty ,but it didnt!Tthey reprogram the car,change the HPFP and the sensor even with my dinan stage 2 on the car.
Great!

And As I was driving today,I feel that the car has more power but it doesnt make any sence to me?

So,my question is,Does the new HPFP increase more power than the old one?

BoostedTerp · 12-15-2010, 11:18 AM

A failing or deteriorating HPFP probably wasnt supplying adequate fuel pressure to your car, reducing the power output. In that sense, a new one could very well restore power that was missing before.

taz2ko0 · 12-15-2010, 12:44 PM

ditto

zeenon53 · 12-15-2010, 12:49 PM

Plus the car is adapting to your driving habits again.

dlbrooks18 · 12-15-2010, 04:43 PM

Hmm, that's weird because by reprogramming your car the Dinan flash is gone so how can it be that your car feels more powerful; unless you had the Dinan reflashed?? If that's the case, I agree with the two posts above..

rcusick · 12-18-2010, 01:16 PM

What happened with me is ref lash didn't overwrite dinan tune. New fuel pump significantly increased power (I assume old one was really sub par). Also got $1000 check in mail from BMW for troubles.

12-15-2010, 02:22 AM	#1
AJ335 Private 12 Rep 72 Posts Drives: 09' E90 - 13' R35 Join Date: Jul 2010 Location: Toronto iTrader: (0)	Changed HPFP,more power? last saturday,while I was driving on the high way,and I switch to sports gear on to have some pull.however,the car starts shaking,and the next thing i know I had a engine malfunctioning. So I took it to the dealer with my Dinan stage2 ,I was worried that the Dinan flash will mess up my warranty ,but it didnt!Tthey reprogram the car,change the HPFP and the sensor even with my dinan stage 2 on the car. Great! And As I was driving today,I feel that the car has more power but it doesnt make any sence to me? So,my question is,Does the new HPFP increase more power than the old one?
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12-15-2010, 11:18 AM	#2
BoostedTerp First Lieutenant 19 Rep 314 Posts Drives: '15 M3 Join Date: Jun 2009 Location: Arlington, VA iTrader: (0)	A failing or deteriorating HPFP probably wasnt supplying adequate fuel pressure to your car, reducing the power output. In that sense, a new one could very well restore power that was missing before. __________________ '15 Black Sapphire M3
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12-15-2010, 12:44 PM	#3
taz2ko0 Aw sh!t 120 Rep 1,028 Posts Drives: M4 Join Date: Jan 2009 Location: Naples, FL iTrader: (4)	ditto __________________ Bigger is always better! M4
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12-15-2010, 12:49 PM	#4
zeenon53 Major 44 Rep 1,155 Posts Drives: BMW Join Date: Apr 2010 Location: obx iTrader: (3)	Plus the car is adapting to your driving habits again.
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12-15-2010, 04:43 PM	#5
dlbrooks18 Brigadier General 164 Rep 3,735 Posts Drives: e90 335i Join Date: Nov 2008 Location: Los Angeles iTrader: (2)	Hmm, that's weird because by reprogramming your car the Dinan flash is gone so how can it be that your car feels more powerful; unless you had the Dinan reflashed?? If that's the case, I agree with the two posts above.. __________________ 2008 E90 335
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12-18-2010, 01:16 PM	#6
rcusick Private First Class 12 Rep 133 Posts Drives: BMW 335 Join Date: Jan 2009 Location: Los Angeles iTrader: (0)	Hpfp What happened with me is ref lash didn't overwrite dinan tune. New fuel pump significantly increased power (I assume old one was really sub par). Also got $1000 check in mail from BMW for troubles.
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