Procede V4 and HPFP

loweredram · 11-23-2010, 02:08 PM

Guys I had a quick question. I have a 07 335i with 37000 miles on it. I just ordered my Vishnu V4 and will have it tomorrow. I was wondering if the chip would put extra strain on the fuel pump and possibly start causing issues. To date my car has always run fine I just wasn't sure if the V4 programming works the fuel system harder? Thanks

TheRox · 11-23-2010, 02:14 PM

No, however chipping your car will put more pressure and increase wear on your crankshaft and transmission.

Thats a no brainer. HPFP is least of your worries.

The engine might be able to do 400 HP, but that rest of the car cannot. Even Dinan, expires after 4 years -- when you start to see the results of increasing the boost.

What that software does is change your engine mapping -- it will place much more strain on your turbochargers, so they will fail much sooner. I don't think it affects HPFP delivery of fuel to the cylinder head.

ajsalida · 11-23-2010, 03:24 PM

Well it makes extra HP by cranking up the turbos' boost, which pumps more air, which needs more fuel than stock HP levels. So the HPFP is working harder in terms of higher flow rate, while using the extra power.

Enough to break it sooner? Probably not, they are breaking by themselves pretty rapidly under little stress. However I am sure BMW will insist it was the V4 that broke yours should it come to that.

edit: I am really amazed at how few cars are blowing up with various tunes on them. Or I should say how few we hear about. Seems that engine is not very stressed @ 300 HP/TQ.

TheRox · 11-23-2010, 03:37 PM

Quote:

Originally Posted by ajsalida

Well it makes extra HP by cranking up the turbos' boost, which pumps more air, which needs more fuel than stock HP levels. So the HPFP is working harder in terms of higher flow rate, while using the extra power.

Enough to break it sooner? Probably not, they are breaking by themselves pretty rapidly under little stress. However I am sure BMW will insist it was the V4 that broke yours should it come to that.

edit: I am really amazed at how few cars are blowing up with various tunes on them. Or I should say how few we hear about. Seems that engine is not very stressed @ 300 HP/TQ.

I doubt you would see the effects this soon; you need quite a few years of after market tuning to see the full effects.

OpenFlash · 11-23-2010, 03:47 PM

The HPFP is driven off the crankshaft. It spins at the same speed regardless of boost pressure. What controls fuel pressure (which is raised with the Procede) is the activity of a pressure release valve. So the pump itself really doesn't "work harder" when Procede tuned. But if you pump does start to fail, you will notice it earlier when running the Procede since the extra power demands more fuel.

Slidewayz · 11-23-2010, 04:00 PM

With the exception of tuning errors and a few outliers, no one has blown these engines after many miles @ 400+ WHP.

My bet is that the N54 will reliably hold 600+WHP, but we'll see.

The point is that there's unlikely to be any premature failure of engine components based on any power being made with the stock turbos. Other drivetrain components? Well, that's another story!

loweredram · 11-23-2010, 09:47 PM

Thanks for the info guys. Installing my V4 tomorrow cant wait!!!!

BimmerPod · 11-23-2010, 09:59 PM

i'll put it this way:

my completely stock 335i which I lemoned after 1400 miles had 4 HPFP failures. I am currently running a Procede tuned 335i and the car is running strong. (did have HPFP issues once before tune and once after on this car, but point is, the tune doesn't increase failure rate)

11-23-2010, 02:08 PM	#1
loweredram Lieutenant 50 Rep 405 Posts Drives: 16 F80 M3 Join Date: Oct 2010 Location: ca iTrader: (2)	Procede V4 and HPFP Guys I had a quick question. I have a 07 335i with 37000 miles on it. I just ordered my Vishnu V4 and will have it tomorrow. I was wondering if the chip would put extra strain on the fuel pump and possibly start causing issues. To date my car has always run fine I just wasn't sure if the V4 programming works the fuel system harder? Thanks
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11-23-2010, 02:14 PM	#2
TheRox Colonel 119 Rep 2,312 Posts Drives: 6mt Join Date: Oct 2009 Location: Here and there iTrader: (2)	No, however chipping your car will put more pressure and increase wear on your crankshaft and transmission. Thats a no brainer. HPFP is least of your worries. The engine might be able to do 400 HP, but that rest of the car cannot. Even Dinan, expires after 4 years -- when you start to see the results of increasing the boost. What that software does is change your engine mapping -- it will place much more strain on your turbochargers, so they will fail much sooner. I don't think it affects HPFP delivery of fuel to the cylinder head.
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11-23-2010, 03:24 PM	#3
ajsalida Colonel 226 Rep 2,387 Posts Drives: 95 M3, 02 R1150GSA, 09 335xi Join Date: Aug 2010 Location: SW USA iTrader: (2)	Well it makes extra HP by cranking up the turbos' boost, which pumps more air, which needs more fuel than stock HP levels. So the HPFP is working harder in terms of higher flow rate, while using the extra power. Enough to break it sooner? Probably not, they are breaking by themselves pretty rapidly under little stress. However I am sure BMW will insist it was the V4 that broke yours should it come to that. edit: I am really amazed at how few cars are blowing up with various tunes on them. Or I should say how few we hear about. Seems that engine is not very stressed @ 300 HP/TQ.
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11-23-2010, 03:47 PM	#5
OpenFlash 1737 Rep 17,960 Posts Drives: A Lot Join Date: Sep 2006 Location: SF Bay, CA iTrader: (0) Garage List 2018 Ducati Panigal ... [0.00] 2016 Mazda CX5 [0.00] 2017 Aprilia Tuono ... [0.00] 2019 BMW M2 Competi ... [0.00] 2015 BMW M5 Competi ... [10.00] 2016 Ducati XDiavel S [0.00] 2016 AMG GT S [0.00] 2011 Ferrari 458 It ... [0.00] 2017 Charger Hellcat [0.00] 2015 KTM Super Duke ... [0.00] 2016 KTM RC390 [0.00]	The HPFP is driven off the crankshaft. It spins at the same speed regardless of boost pressure. What controls fuel pressure (which is raised with the Procede) is the activity of a pressure release valve. So the pump itself really doesn't "work harder" when Procede tuned. But if you pump does start to fail, you will notice it earlier when running the Procede since the extra power demands more fuel.
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11-23-2010, 04:00 PM	#6
Slidewayz Major 33 Rep 1,177 Posts Drives: 2007 335i Join Date: Jan 2009 Location: Oakland, CA iTrader: (5)	With the exception of tuning errors and a few outliers, no one has blown these engines after many miles @ 400+ WHP. My bet is that the N54 will reliably hold 600+WHP, but we'll see. The point is that there's unlikely to be any premature failure of engine components based on any power being made with the stock turbos. Other drivetrain components? Well, that's another story!
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11-23-2010, 09:47 PM	#7
loweredram Lieutenant 50 Rep 405 Posts Drives: 16 F80 M3 Join Date: Oct 2010 Location: ca iTrader: (2)	Thanks for the info guys. Installing my V4 tomorrow cant wait!!!!
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11-23-2010, 09:59 PM	#8
BimmerPod Private First Class 26 Rep 144 Posts Drives: e92 335i, f85 x5m Join Date: May 2009 Location: lost iTrader: (0)	i'll put it this way: my completely stock 335i which I lemoned after 1400 miles had 4 HPFP failures. I am currently running a Procede tuned 335i and the car is running strong. (did have HPFP issues once before tune and once after on this car, but point is, the tune doesn't increase failure rate)
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