Yeah it is only possible with MMI 3G+I would love to get the FIS-MMI but I was too tight-fisted to pay for the technology pack so I ended up with the Concert.
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Anyone using Shell V power on a tuned petrol engine?
You may want to grab a brew or beer, then read this.
Shell, last month (April) 2021) revised it's blend of V power with Dynaflex giving more cleaning abilities and 4% more power.
Great, that sounds good! Right? Erm, maybe, I don't have any proof yet, but bare with me.
I have a tuned S5 3.0 V6 Supercharged. It was remapped 2 years ago on Shell V power. Tuners recommend using Tesco Momentum 99 when remapping as it gives the best results on reducing timing pulls due to it being souped up with Ethanol whereas VPower was other additives to increase the octane.
I believe VPower to be slightly superior over Momentum mainly due to its cleaning etc, where as Momentum is said to get you those extra few bhps on the dyno!?
Anyway, I'm not getting into 'that' debate shell Vs Tesco. This is different, I think.
I've been filling with Vpower for the past month or so, sometimes with the odd fill of Tesco. I didn't really see a difference in performance, maybe Tesco had a 'sharper' edge to it than Vpower. I also found mpg seemed slightly lower on Tesco.
BUT!
Since last month, I have found my S5 to running sweet and seemed like it was pulling harder. Now I work from home, real everyday driving isn't comparable as driving the same route to and from work, so it may be placebo as I'm not driving as much, so just enjoying driving. But like I say it seemed to be driving very well like someone had tinkered with my ECU map.
I was having a blast when all of a sudden, the power went like it does when traction control kicks in, but I now always turn my traction control to sport (Half off) since the S5's power will spin all 4 wheels. So now when driving spiritedly, I do a quick cockpit check/change to exhaust flaps fully open, Traction to Sport, Auto start stop off, and Gearbox in sport manual.
Going back to the power loss. It started on the gear change into 3rd with WOT. Pressed the throttle a few times, nothing, then the power came back to normal. It did it once more on the drive and this was after driving for around an hour. No CEL lights or anything. Checking with VCDS gave P0089 Valve for fuel metering - implausible signal, P2279 Leak in air intake system - intermittent, P310B Fuel pressure outside Specification on low pressure side! Bowlocks!? I've read from the guys in the US that this is common on stage 2 and it's the tank fuel pump not keeping up with demand. Also going back to stock tune, the fuel pressure wasn't an issue as the demand is lower. But the Low pressure fuel pump should regulate at 5 bar, mine went to 7.3 bar!? so I would have thought a high pressure would be ok as it would still be supplying fuel? Anyway, according to the guys who have had this, the fuel pressure drops, then over pumps giving the 7.3 bar. The solution was to replace the tank fuel pump, but I'm not sure. My fuel system appears to be running fine and the fact the pump can do 7.3bar leads me to think it can supply enough fuel?
Still with me? In the US E85 (85% Ethanol) fuel can be used and it's equivalent octane rating is the same as race fuel, up at 105 (not sure if this is US rating). Also when running on with Ethanol the mpg goes down and a higher volume of fuel is used so the fuel pumps are working harder, hence the high pressure fuel pump upgrades like Autotech's HPFP piston upgrade.
Back to me. I went out again in the car and it pulled power again under WOT in 2nd gear. The fuel was V power and low level in the tank. It doesn't cut power every time. And no fault logs in VCDS since the first time it did this power cut.
I've been researching and pricing up the tank fuel pump as last resort to cure this problem. But last week, I refilled with Tesco and not filled with Tesco for the past 2 maybe 3 fills. Been on a decent drive, no power cuts, no fuel pressure codes in VCDS, but the power doesn't feel as sharp as the shell stuff now!?
Only time will tell and if I refill again with shell to see if the performance improves and if I get power cuts again!? I will obviously update.
But it's only with the guys in the US talking about needing to upgrade the fuel pump to flow more fuel which is what high ethanol fuels need, I looked at Shell's website and they revised their V power blend in April which is when I got this fault. The car has been as I said at stage 2 for 2 years with no problems!
Also September this year the UK government has announced ALL unleaded fuels are to contain 10% ethanol in the fuels (E10). It is E5 (5%0 at the moment. So will this aafect us with Ethanol demanding more volume? If this is true why doesn't the Tesco 99 give me fuel cuts it it's octane is upped by use of ethanol.
This is my car saga at the moment and not conclusive if it is the fuel blend or an actual issue with my car. But I do want to try Shell again as the 4% extra power, I think was there on my car!
I'm going for a little rolling road run to check my car's performance/health in a week or 2, so don't want another issue as before I had a charge cooler issue when mapping my car.
Fingers crossed it was a glitch. I'll continue with my 'testing' of Tesco Momentum and Shell.
If any of you can add to my findings or suspicions, please do let me know!
Shell, last month (April) 2021) revised it's blend of V power with Dynaflex giving more cleaning abilities and 4% more power.
Great, that sounds good! Right? Erm, maybe, I don't have any proof yet, but bare with me.
I have a tuned S5 3.0 V6 Supercharged. It was remapped 2 years ago on Shell V power. Tuners recommend using Tesco Momentum 99 when remapping as it gives the best results on reducing timing pulls due to it being souped up with Ethanol whereas VPower was other additives to increase the octane.
I believe VPower to be slightly superior over Momentum mainly due to its cleaning etc, where as Momentum is said to get you those extra few bhps on the dyno!?
Anyway, I'm not getting into 'that' debate shell Vs Tesco. This is different, I think.
I've been filling with Vpower for the past month or so, sometimes with the odd fill of Tesco. I didn't really see a difference in performance, maybe Tesco had a 'sharper' edge to it than Vpower. I also found mpg seemed slightly lower on Tesco.
BUT!
Since last month, I have found my S5 to running sweet and seemed like it was pulling harder. Now I work from home, real everyday driving isn't comparable as driving the same route to and from work, so it may be placebo as I'm not driving as much, so just enjoying driving. But like I say it seemed to be driving very well like someone had tinkered with my ECU map.
I was having a blast when all of a sudden, the power went like it does when traction control kicks in, but I now always turn my traction control to sport (Half off) since the S5's power will spin all 4 wheels. So now when driving spiritedly, I do a quick cockpit check/change to exhaust flaps fully open, Traction to Sport, Auto start stop off, and Gearbox in sport manual.
Going back to the power loss. It started on the gear change into 3rd with WOT. Pressed the throttle a few times, nothing, then the power came back to normal. It did it once more on the drive and this was after driving for around an hour. No CEL lights or anything. Checking with VCDS gave P0089 Valve for fuel metering - implausible signal, P2279 Leak in air intake system - intermittent, P310B Fuel pressure outside Specification on low pressure side! Bowlocks!? I've read from the guys in the US that this is common on stage 2 and it's the tank fuel pump not keeping up with demand. Also going back to stock tune, the fuel pressure wasn't an issue as the demand is lower. But the Low pressure fuel pump should regulate at 5 bar, mine went to 7.3 bar!? so I would have thought a high pressure would be ok as it would still be supplying fuel? Anyway, according to the guys who have had this, the fuel pressure drops, then over pumps giving the 7.3 bar. The solution was to replace the tank fuel pump, but I'm not sure. My fuel system appears to be running fine and the fact the pump can do 7.3bar leads me to think it can supply enough fuel?
Still with me? In the US E85 (85% Ethanol) fuel can be used and it's equivalent octane rating is the same as race fuel, up at 105 (not sure if this is US rating). Also when running on with Ethanol the mpg goes down and a higher volume of fuel is used so the fuel pumps are working harder, hence the high pressure fuel pump upgrades like Autotech's HPFP piston upgrade.
Back to me. I went out again in the car and it pulled power again under WOT in 2nd gear. The fuel was V power and low level in the tank. It doesn't cut power every time. And no fault logs in VCDS since the first time it did this power cut.
I've been researching and pricing up the tank fuel pump as last resort to cure this problem. But last week, I refilled with Tesco and not filled with Tesco for the past 2 maybe 3 fills. Been on a decent drive, no power cuts, no fuel pressure codes in VCDS, but the power doesn't feel as sharp as the shell stuff now!?
Only time will tell and if I refill again with shell to see if the performance improves and if I get power cuts again!? I will obviously update.
But it's only with the guys in the US talking about needing to upgrade the fuel pump to flow more fuel which is what high ethanol fuels need, I looked at Shell's website and they revised their V power blend in April which is when I got this fault. The car has been as I said at stage 2 for 2 years with no problems!
Also September this year the UK government has announced ALL unleaded fuels are to contain 10% ethanol in the fuels (E10). It is E5 (5%0 at the moment. So will this aafect us with Ethanol demanding more volume? If this is true why doesn't the Tesco 99 give me fuel cuts it it's octane is upped by use of ethanol.
This is my car saga at the moment and not conclusive if it is the fuel blend or an actual issue with my car. But I do want to try Shell again as the 4% extra power, I think was there on my car!
I'm going for a little rolling road run to check my car's performance/health in a week or 2, so don't want another issue as before I had a charge cooler issue when mapping my car.
Fingers crossed it was a glitch. I'll continue with my 'testing' of Tesco Momentum and Shell.
If any of you can add to my findings or suspicions, please do let me know!
21 - 40 of 50 Posts
Little update.
Went out last night, fuel light came on (sorry Simon ) so went and got some more V Power!
If it is placebo, it's a bloody good placebo, but the car feels better on V power (presuming it's the new blend!), tested the, as Jeremy Clarkson would say, POWEEER and it it does feel better than the Momentum! Also, not run a diagnostic check, but no power cuts, even at WOT and banging through each gear all the way to 5th!
Touching plenty of wood (British saying) the fuel issue seems to be ok!
I may have to go back on Momentum just to prove to myself that the new blend of V Power is now better than Momentum 99 as the weather does have an affect on the power or at least the way it feels. Not sure if the engine running nicely affects the gearbox changes, but they feel more like my Bro's M2, sharp and a little bit of kick, like the old SMG in the E46 M3 or a straight cut dog leg box.
When I plant the accelerator from a standing start, I heard the SC whine, not heard that before, especially on a CREC engine which has the SC clutch.
Not trying to say it magic fuel, but it does feel good on the placebo butt dyno!
1 point to add, I have serviced my airfilter as it's been 2 years, wasn't that dirty, but I've only done about 8k miles in 2 years and I made further mods to my air box. Totally removed the snow shield as I had just drilled holes in it and added another 25mm hole at the back on the box.
Anyhoo, to back me up please try some, you might like it. Bit expensive at nearly £1.45 per litre, but as I don't do the miles, I'm paying for the smiles.
Went out last night, fuel light came on (sorry Simon
) so went and got some more V Power!If it is placebo, it's a bloody good placebo, but the car feels better on V power (presuming it's the new blend!), tested the, as Jeremy Clarkson would say, POWEEER and it it does feel better than the Momentum! Also, not run a diagnostic check, but no power cuts, even at WOT and banging through each gear all the way to 5th!
Touching plenty of wood (British saying) the fuel issue seems to be ok!
I may have to go back on Momentum just to prove to myself that the new blend of V Power is now better than Momentum 99 as the weather does have an affect on the power or at least the way it feels. Not sure if the engine running nicely affects the gearbox changes, but they feel more like my Bro's M2, sharp and a little bit of kick, like the old SMG in the E46 M3 or a straight cut dog leg box.
When I plant the accelerator from a standing start, I heard the SC whine, not heard that before, especially on a CREC engine which has the SC clutch.
Not trying to say it magic fuel, but it does feel good on the placebo butt dyno!
1 point to add, I have serviced my airfilter as it's been 2 years, wasn't that dirty, but I've only done about 8k miles in 2 years and I made further mods to my air box. Totally removed the snow shield as I had just drilled holes in it and added another 25mm hole at the back on the box.
Anyhoo, to back me up please try some, you might like it. Bit expensive at nearly £1.45 per litre, but as I don't do the miles, I'm paying for the smiles.
@Dave Kwatro
It's a cracking day for me to put the roof down and go on a 20 minute spin out for a tank full of Vpower. As you say, you don't own a car like this to worry about the cost of petrol, haha.
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It's a cracking day for me to put the roof down and go on a 20 minute spin out for a tank full of Vpower. As you say, you don't own a car like this to worry about the cost of petrol, haha.
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Yes it is and even better this weekend!!@Dave Kwatro
It's a cracking day for me to put the roof down and go on a 20 minute spin out for a tank full of Vpower. As you say, you don't own a car like this to worry about the cost of petrol, haha.
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I always keep thinking of a Cab, especially on nice days.
I think the way to tell if it's the new 'blend', it says Britain's best performance fuel on the trigger handle and some other Ads around the forecourt. My local one which is half a mile away from my house had big board stands further advertising it. But I guess all Shell stations will have it now.
Let us know!
Dave just going back to the airbox mod, I might have got a little carried away with mine...
![Automotive tire Hood Motor vehicle Automotive design Bumper]()
Barely call it a 'box' anymore
Well the difference between us is that I only noticed the code on a routine VCDS scan. Nothing had happened on the road to make me concerned, and as I'm sure you would expect, I'm as sensitive to any glitches in my car's performance as anyone else here.@Dippy - that's exactly what mine said, Actual LPFP was 7.3 and specified or default is 4.99 bar and the error log started at 1800rpm to 2800rpm, which was when I was prodding the accelerator in disbelief that my lovely S5 was having a wobble!
SSP-624
@Dave KwatroI think the way to tell if it's the new 'blend', it says Britain's best performance fuel on the trigger handle and some other Ads around the forecourt. My local one which is half a mile away from my house had big board stands further advertising it. But I guess all Shell stations will have it now.
Let us know!
I hadn't seen your post before filling up so I didn't see the ads. But there again I don't notice anything much at the forecourt - just fill up and go. 🚗
Barely call it a 'box' anymore![]()
I've got to tell you, its one of the best mods I've done to the car, it still looks totally stock from above, the cold side is totally open and doesn't seem to suffer from any heat soak from the engine, and I can hear the supercharger now but it's not ridiculously loud and I can still use the stock filter.
The best bit though... It didn't cost a penny.
Yeah that's what mine is like, can hear the SC, but I have only hole sawed mine and removed the snow shield. Mine cost £65 for the ITG cone filter.
Makes £350 for some shields look a little over priced! Have you replaced the intake pipe? I'm sure I saw that you had the IE intake?
Yes I found a second hand IE intake pipe from an early kit. It didn't fit to the stock airbox but after trimming back slightly it went in like a glove. Changing that added some sound and I tried with no box at all just to see what an open intake was like (filter still attached) it was too much for me but taking out 1 side of the airbox is just right and shouldn't be affected by hot air.
As it looks now.
@Smokey Joe Looking good Joe! I agree, open cone is a bit loud on the old whine. Mine probably sounds the same as yours, you can hear it, but it's not like an old A series gearbox (Mini/Metro).
Looking at your pic, I need to do my annual engine bay clean!!
@Redline_dtm1 Ade, I remember putting Redex in my plug holes on my Rover coupe Tomcat! It smoked like tyres on a fire! I thought I'd broke it! Eventually it disappeared! Best engine clean out and when the engine runs at it's best is after a trackday!!
Interesting what you say what Doug said, be interesting to know what that was, but then again HTB was tuned at MRC and he still had this fault code, so what ever it is, it doesn't affect this fuel pressure glitch.
I found on my 3.0TDi that the difference between std diesel and V power was V power pulled better top end but std fuel seemed to pull a little better low down!?
Looking at your pic, I need to do my annual engine bay clean!!
@Redline_dtm1 Ade, I remember putting Redex in my plug holes on my Rover coupe Tomcat! It smoked like tyres on a fire! I thought I'd broke it! Eventually it disappeared! Best engine clean out and when the engine runs at it's best is after a trackday!!
Interesting what you say what Doug said, be interesting to know what that was, but then again HTB was tuned at MRC and he still had this fault code, so what ever it is, it doesn't affect this fuel pressure glitch.
I found on my 3.0TDi that the difference between std diesel and V power was V power pulled better top end but std fuel seemed to pull a little better low down!?
It's interesting that 3 of us with MRC stage 2 CRECs have had intermittent P0089s.
I don't believe in coincidence when it comes to fault arisings.
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I don't believe in coincidence when it comes to fault arisings.
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21 - 40 of 50 Posts
