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Discussion Starter · #21 ·
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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Yeah it is only possible with MMI 3G+ :(
 

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Discussion Starter · #22 ·
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.
 
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@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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Discussion Starter · #24 ·
@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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Yes it is and even better this weekend!!

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! (y)
 

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@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! :) AND this was 2 years and 8k miles after my remap! I periodically check with VCDS and never seen these faults before. I do get a sporadic PCV valve fault logged, but this is always at idle 700rpm and when the engine has warmed up!? I don't notice anything untoward. No CEL lights.
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.

Not sure exactly how the 2 fuel systems work on the CREC engine, or how they switch between the 2 using the same tank fuel pump. I'm guessing the LPFP (tank pump) sends 5 bar of fuel to the HPFP, which has a line off before the HPFP piston/pump to the port injectors, then when demanded a solenoid commands the fuel from the HPFP to the direct injectors in the cylinders. Maybe at this point of switch over, is where we see this fuel pressure error? As it does seem to occur at or below 3krpm.
SSP-624
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Discussion Starter · #28 ·
Ha ha! That's pretty much an open cone induction kit now! BUT, probably better as the filter is still shielded by 3/4 of the air box from the engine! Bet you can connect the secondary air induction pipe through the big hole, dead easy!?
 

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Discussion Starter · #29 ·
Thanks Dippy!
Ah so by the mapping chart, it looks like the MPI port injectors work all the time and the fuelling isn't switched between the 2 systems. Interesting that the 3krpm has been a marker in some of these fuelling issues and also the end of 3xFSI.

Also, I have noticed the fuel cut about 3 times, but only flagged on VCDS once (I cleared the DTCs and it did it once more) and no CEL in any instance. But HTB had a record of the fault on the dyno, but no power drop. Maybe it's over sensitive!?
 

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Yeah. No loss of power on each of the 3 occasions I've had the P0089; once on the road and twice on the Dyno

I'm basically ignoring it because it's only 3 occurrences in 5 years (or in 2 years since MRC stage 2) and it seems to have no impact on the car's performance.

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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! (y)
@Dave Kwatro

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. 🚗
 

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Discussion Starter · #32 ·
Yeah. No loss of power on each of the 3 occasions I've had the P0089; once on the road and twice on the Dyno

I'm basically ignoring it because it's only 3 occurrences in 5 years (or in 2 years since MRC stage 2) and it seems to have no impact on the car's performance.

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So you and Dippy have these faults logged but nothing noticeable in the performance of the car. I have noticed a power cut, but the power will be there again after coming off the throttle and getting back on it. Looks like some sort of glitch!?

Did you get the V power fuel?
 

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Barely call it a 'box' anymore
Ha ha! That's pretty much an open cone induction kit now! BUT, probably better as the filter is still shielded by 3/4 of the air box from the engine! Bet you can connect the secondary air induction pipe through the big hole, dead easy!?
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.
 

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Discussion Starter · #35 ·
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! :D

Have you replaced the intake pipe? I'm sure I saw that you had the IE intake?
 

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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.
IMG_20210524_212827.jpg
 

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I can't say that I've ever had any issue using either fuel and have been using tesco 99 since it was released 25 + years ago. I do use shell v power if I am over that side of town but either way no gains or loss in performance which ever fuel is in the tank on my S5 and I get it health checked every 14 - 16 months
I also use millers eco max every 4th fill up just for piece of mind
Regarding fuel cleaners I've tried most and whilst redline si-1 is good,nothing beats BG44K imho which I use 1 can every 12 months.
Redex is a bit old skool as you use to put this in your spark plug holes to clear gum and varnish in the engine once upon a time. Lol
The BP garage a mile away from me after 30 years is now a shell garage,so it's nice to have both tesco and shell station 1 mile away from home.
My car was mapped on tesco 99 fuel so I think I will stick with that and try shell ever 4th tank.

I'm not sure if it is related but Doug at Mrc said something about the fuelling on the crec engine when he mapped Dj switch's car a month ago. It was a procedure that he did not need to need to do on my engine when running at WOT.


Off topic
I will be visiting my shell garage alot more as I have bought a 2011 A6 tdi s line special edition 2 weeks ago and it had quarter a tank of tesco diesel in when I picked it up.
I ran it for 5 days then added 1 can of BG22k and added half a tank of shell v power diesel.
The car after 30 miles ran much better and definitely pulled stronger in all the gears.
 

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Discussion Starter · #38 ·
@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!! :D

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!? :)
 

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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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Well that's interesting. Was out yesterday going somewhere and pulled out onto the A1. Traction off and in sport mode, floored it through the gears on auto and I think 2nd to 3rd at the DSG farts it went into limp mode with a error light on the dash (can't recall which one). I had a miss fire afterwards too, sounded like at least one piston was not firing.

Stopped at the next traffic lights and turned off and back on and all back ok.

I've not read the codes yet, but will check later on. I suspect one of the coil packs needs replacing.

Only thing different is that the Mrs filled up recently with some unknown super brand (she doesn't know what apart that it wasn't Momentum or Vpower).
 
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