whoosh.....stutter........CheckEngineLight! [fixed pg5]

[bacillus]

nope, std pump which should deliver 130bar. (which to be fair it does at lower rpm) , thats why a swap was attempted.
Adding a HPFP has been considered but a) I shouldnt need it and b) it may not even help
(still cant believe it pulled 320bhp @ prosport!) but time will tell.
Ironically some maps request less fuel pressure (and allow AFR to lean and EGR to raise above recomended limits), so on those I may not have had a problem!

John

The standard pump will provide 130bar but the problem lies with it  not being able to keep up the rail pressure.

[RedRobin]

^^^^

Well, I know of several very highly modified GTI's (not Ed30's) of around 300 bhp and they only have the stock fuel pump without any issues. Also VW Racing's track cars which are raw race cars and not used on the road.

[The same cars also don't bother with the S3 intercooler, as do the SEAT race cars have stock intercoolers.]

[bacillus]

RR those cars will have a map that caters for the rail pressure being around 110bar that the standard pump can manage.

The pump specific software from APR and Revo calls for 130 bar rail pressure and the standard pump isn't up to the task.

[gazbutS3]

John hasn't got the pump specific software

[RedRobin]

RR those cars will have a map that caters for the rail pressure being around 110bar that the standard pump can manage.

....Good point!
 

The pump specific software from APR and Revo calls for 130 bar rail pressure and the standard pump isn't up to the task.

....My understanding was that you could run Revo2+ with a stock FP

[gazbutS3]

you can run revo stage2 with stock pump, revo stage2+ is the fuel pump specific map

[RedRobin]

you can run revo stage2 with stock pump, revo stage2+ is the fuel pump specific map

....Good, because that's what I run!

But do you HAVE TO run an aftermarket FP with Revo Stage2+? I thought not

[gazbutS3]

It was my understanding that the stage2+ is the fuel pump specific map, designed for the HPFP so I would have thought the pump is req to get the best from the map. The car would probably run ok as the ECU would adjust but not t its true potential

[bacillus]

But do you HAVE TO run an aftermarket FP with Revo Stage2+? I thought not

Yup, revo want you to have an uprated HPFP before they flash you with the stage 2+ software as the software requires the rail pressure to be 130bar lower down the rev range.

[sibart]

It really is a puzzle of which no-one has found a defined answer.

....Those are the worst kind of faults!

Btw, your ex K03 turbo is holding out and delivering very well indeed so far!

Thanks

It was frustrating for sure as the car was fine for a while then fault appeared.
Glad all is well with your car Robin.

[john_o]

update

Ran the car for a while and tbh it has been better but problem still persists  at high rpm
New fuel filter fitted and nada difference
Next stop is the tank lift pump........
after that who knows , only ECU and Injectors left!

[Greeners]

  Sorry to hear this is still not resolved john_o 

Must be really starting to pi$$ you off 

[Phil Mcavity]

Have they tried running it stock without a remap on it??, i bet the maps causing it.

[john_o]

thanks Greenouse , yeah it is a pain but Awesome have been great so far
However we are fast approaching a decision point!

Have they tried running it stock without a remap on it??, i bet the maps causing it.

lol Phil we've been here 2 pages ago.
Runs fine on std map, it IS the remap demanding more of the OE fuel system.
The problem is that the OE system should be able to deliver whats asked.

[Phil Mcavity]

id maybe try a different map then john? is this a problem with just Revo maps  and not others.

Sorry didnt read the pages in between to catch up on the latest.

This "Bad fuel" youve had, no signs of water in the fuel, which may of lead to other damage. Have they done any form of

compresssion checks to all cylinders??  , head off maybe and inspect ??