i had the 116 bar valve, but as you can see from my before and after logs in this thread, my 116 bar valve did a decent job at handling my 130 bar request. the 150 bar valve definitely smoothed out my logs though.
I thought that was crazy when I saw it. 116 bar rail valve support 130 bar doesn't happen very often.
I am happy to see the results of your new valve, it looks much better and a very smooth curve for the fuel pressure.
Thanks,
John
Fueling your passion for power!
The only "complete" fueling solution for FSI/TFSI engines!
I should have the old valve since I'm 05.5, I need to do my timing belt service and then I'll get some logs before the PRV and after I'll get it I'll do after. This might take a while, I need to find a garage to do my timing belt.
Originally Posted by Charles.waite
pn: 079130757
Thanks!
EDIT: apparently they use the same valve for R8 V8 and V10 and least that's what comes up when i put this part number on GAP . com
And it's interesting how RS4 doesn't come up in results.
Full Apr tune stage 2+ - K&N custom CAI - Treadstone TR6 FMIC (Greddy piping) - APR HPFP - VMR TP - Milltek Exhaust - H&R/Bilstein suspension - VMR v701 19" - RS4 sway bar - Apikol snub mount - Revised piston DV - Short shifter - AWE boost gauge - Votex 3 piece trunk lip - Cupra lip - LED interior - De-badged
I should have the old valve since I'm 05.5, I need to do my timing belt service and then I'll get some logs before the PRV and after I'll get it I'll do after. This might take a while, I need to find a garage to do my timing belt.
Thanks!
EDIT: apparently they use the same valve for R8 V8 and V10 and least that's what comes up when i put this part number on GAP . com
And it's interesting how RS4 doesn't come up in results.
They say it's "used for tuning 2.0 TFSi engines" so I figure it's an upgraded one, probably the RS4 one, but I guess it could be an aftermarket one as well, who knows...
Good find anyway, but I'm ordering mine from GAP right now since I have a few more things to buy from them.
And have no idea what supply/fit option means. I would probably write them an email but cannot wait any longer.
Full Apr tune stage 2+ - K&N custom CAI - Treadstone TR6 FMIC (Greddy piping) - APR HPFP - VMR TP - Milltek Exhaust - H&R/Bilstein suspension - VMR v701 19" - RS4 sway bar - Apikol snub mount - Revised piston DV - Short shifter - AWE boost gauge - Votex 3 piece trunk lip - Cupra lip - LED interior - De-badged
I found an Australian seat forum that confirmed it is the RS4 valve, and the term "Fit" means installed.
Depending on shipping cost, this may be where I order mine from... Seeing how GAP wants 93$ for it
Group Buy?
We could maybe cut down shipping if the seller just sent one package with many valves to the us and then have someone here take the responsibility of shipping them to everyone.
The thing that scares me is on the australian forum, the guy said he was quoted 100usd to ship 1 or 10... It could be because Australia has retarded tax and trade laws though..
The thing that scares me is on the australian forum, the guy said he was quoted 100usd to ship 1 or 10... It could be because Australia has retarded tax and trade laws though..
You mean regardless of the quantity, shipping is 100USD/valve?
I guess I just threw my hat in the ring
Alright ordered mine from GAP, 93$ list and total of 102$ can't beat that when ECS wants 130$ before shipping.
That is not a bad price. I have check locally and at my cost for the valve they are $112 now (employee cost). The first of the year they had another price increase on them moving them up to the $112 price. The RS4 is not a bad part, but if you want to have the proper flow and need more than 136 bar... you will need one of our valves.
Thanks,
John
Fueling your passion for power!
The only "complete" fueling solution for FSI/TFSI engines!
I am not seeing the need for more than 136 bar on the Bigger injector files just yet... Maybe your injectors will change that? We will see
I am not sure if I was supposed to say, but andy/mike@vast threw around the idea of doing some before and after logs and revisions with the PRV to see how much of a difference can be Influenced out of it. We know the general benefeits but want to see if there are any other areas to grasp efficiency from the upgrade. 6 bar is a lot and can equal 100hp worth of fueling iirc, back in the stone ages before PRV and FSI with w/m, mike squeezed 400awhp out of a 2.0tfsi. I'll see if I can get some pics from Andy on the build ect
I was hesitant to even do this because of the low requested bar on certain BT files... But now I am feeling good
It's a start, thanks John for the support
I am not seeing the need for more than 136 bar on the Bigger injector files just yet... Maybe your injectors will change that? We will see
I am not sure if I was supposed to say, but andy/mike@vast threw around the idea of doing some before and after logs and revisions with the PRV to see how much of a difference can be Influenced out of it. We know the general benefeits but want to see if there are any other areas to grasp efficiency from the upgrade. 6 bar is a lot and can equal 100hp worth of fueling iirc, back in the stone ages before PRV and FSI with w/m, mike squeezed 400awhp out of a 2.0tfsi. I'll see if I can get some pics from Andy on the build ect
I was hesitant to even do this because of the low requested bar on certain BT files... But now I am feeling good
It's a start, thanks John for the support
That is what I want to see. We have a few "shops" getting PRV's right now and testing how much additional fuel they are getting from the higher fuel pressures. I have been told that a certain race team has taken the time to test pressure and flame front via a window cut into an engine (FSI). They have stated that the flame front and pressure are good to 145 + bar. The would have taken the fuel pressure higher but they were limited with the tuning software.
At this time I don't know where the fuel pressure will fall off. I have heard of several running 148 to 150 bar custom tunes with huge success, just last week a customer of ours ran his Type R 255 fuel pump (in tank upgrade) out of fuel. Yes, he ran an upgraded 255 fuel pump out of fuel with our 155 bar rail valve and Stage 2 fuel pump. They are upgrading to the 044 this week and we will have more results soon.
The high pressure is no joke with the FSI platform. If you take the current power levels that people have been able to hit with the RS4 injectors at 130 bar, add another 20 bar to that and you easily have that 100 hp of additional fuel.
If Andy or Mike want to test a PRV have them contact me, I would really like to have another company put our parts to the test!
Fueling your passion for power!
The only "complete" fueling solution for FSI/TFSI engines!
I just got my PRV 145 bar, but I'm going to wait till I see more logs before I install mine. I'll be installing a Revo stage 2+ and a APR pump on Wednesday. A shop in Denver told me Revo only sets its software to the stock settings 116bar for stage 2+. I emailed Revo to see whats the exact bar pressure requested and if it can be change. I'm really curious to see the out come. Please do not take this as bashing your product John, I already bought your PRV, and I'm interested in your future products.
Do any stage 2 or 2+ tunes even request for pressure above 120? I think GIAC might request up to 130 but APR and REVO both do not, so I am failing to see the benefit of raising a pressure relieve valve when the ecu is not even requesting pressures this high at the rail
I am certainly not saying there isnt a potential use for this valve when your tuning actually requests pressure above the stock rail valve, but at most the tunes availible dont even exceed ~130 bar. Which would put you at the rs4 valve at 136 bar. Why would you want to run a valve that cracks at 140,145, and 150 bar if the rail will never see that pressure. These higher pressure valves will definately be useful for engine builds that will actually get a custom tune that request above 136 bar pressure. This is the place I am now and am trying to decide if I should ditch my rs4 valve and work up to higher cracking valve, I will see what my tuner says...
Last edited by okswerve16; 02-17-2012 at 05:40 PM.
Reason: spelling
Do any stage 2 or 2+ tunes even request for pressure above 120? I think GIAC might request up to 130 but APR and REVO both do not, so I am failing to see the benefit of raising a pressure relieve valve when the ecu is not even requesting pressures this high at the rail
I am certainly not saying there isnt a potential use for this valve when your tuning actually requests pressure above the stock rail valve, but at most the tunes availible dont even exceed ~130 bar. Which would put you at the rs4 valve at 136 bar. Why would you want to run a valve that cracks at 140,145, and 150 bar if the rail will never see that pressure. These higher pressure valves will definately be useful for engine builds that will actually get a custom tune that request above 136 bar pressure. This is the place I am now and am trying to decide if I should ditch my rs4 valve and work up to higher cracking valve, I will see what my tuner says...
The original design of the valve cracks at 116 bar (At least according to the VW and AUDI training manual I have for the engine) And IIRC some members on here have had fuel cut issues that have been eliminated with the installation of one of these.
The original design of the valve cracks at 116 bar (At least according to the VW and AUDI training manual I have for the engine) And IIRC some members on here have had fuel cut issues that have been eliminated with the installation of one of these.
Yeah but werent the 116 bar valves only on early models?
Yeah but werent the 116 bar valves only on early models?
This is true. I believe this thread spawned out of the 05.5-06 fuel issues thread and if you are someone with an early car (like me) and it may be necessary to upgrade the valve depending on how you modify your car. If you upgrade your hpfp this may also be necessary as the upgraded pumps will put out more than enough to make the valve dump at unwanted times
This is true. I believe this thread spawned out of the 05.5-06 fuel issues thread and if you are someone with an early car (like me) and it may be necessary to upgrade the valve depending on how you modify your car. If you upgrade your hpfp this may also be necessary as the upgraded pumps will put out more than enough to make the valve dump at unwanted times
I totally agree with you, if you are running a stage 2+ it is most likely requesting above 116 bar but nowhere over 136 bar !
I Upgraded my HPFP to a stage 2 from a kmd and a stock '05 prv. I was getting fuel cuts and thought I had to upgrade my pump, got got a 142 bar valve just because at the same time. I cant say for sure, what eliminated the fuel cuts , but knowing what I do now, the prv probably would have fixed it on its own.
I Upgraded my HPFP to a stage 2 from a kmd and a stock '05 prv. I was getting fuel cuts and thought I had to upgrade my pump, got got a 142 bar valve just because at the same time. I cant say for sure, what eliminated the fuel cuts , but knowing what I do now, the prv probably would have fixed it on its own.
Im pretty sure you are running some stage 3 software so it was definately the prv because being an 05 you must of hd the 116 bar valve, the only way youll know if you needed a 142 bar valve verse an rs4 is if you log requested rail pressure for your tune and determine the max pressure it requests. All aftermarket hpfp will be able to supply enough fuel for a regular stage 3 setup, now that isnt saying they will all reliably supply fuel lol but the main thing is you should determine what your tune requests and then you can accurately assess what pressure rail valve you should pick.
I will try to take some logs of block 230 for the high pressure side and see where I am at as far as fuel pressure... But it will be when I get out of work which is at 9pm..
vizi
05.5 B7 A4 6sp AWD Quartz Gray 173,000mi I like to drive!
Car:Custom JRP Mani & DP, GT3076, FWD to AWD conversion, IE 144/20,Wossner Pistons 83.5mm 9.2:1Cr, CM FX400, Ported Head Ferrea valves, Eurojet VC, EJ S3 Dv Flange, Custom STASIS Exhaust, Precision 600hp FMIC, RS4 injectors, Tial 38mm, APR HPFP, 034 SD mounts, Apikol Rear Diff, RS4 Sway, APR Snub Mount, DO 4 port w/m direct injection, HPFPUpgrade 142bar fuel relief valve
Absolute Automotive Tuned to 373+awhp (Corrected)
Do any stage 2 or 2+ tunes even request for pressure above 120? I think GIAC might request up to 130 but APR and REVO both do not, so I am failing to see the benefit of raising a pressure relieve valve when the ecu is not even requesting pressures this high at the rail
Originally Posted by fordyoz
Reply With Quote
Bookmarks