BrynO

Had my '01 WRX remapped last year, still a cat in the downpipe and set up for 1.3bar boost, power is circa 260HP & torque 270ft lb's.

I know many fit an uprated 255 fuel pump after a re-map, I haven't and my mapper did not feel it necessary at the time I had the map..

As I am running the same BHP as a PPP'd WRX (although higher boost and torque), and Prodrive do not fit an uprated pump, is it really neccessary to uprate the pump at this level of tune? I'm not planning on any more mods to the car... cheers

jasonius

iTrader: (1)

If your mapper recons your IDC is ok then (provided he's reputable) it should be fine. TBH at your current level it isn't nec to upgrade fuel system (other than via mapping).



BTW who mapped it..?

BrynO

Mapped by PE so yep reputable for sure, I am just curious as to why some mappers say you need an uprated pump and some (inc Prodrive) don't.. I'm planning on getting it on a RR again in the next month or so for a health check, so fueling will be checked over then..

New_scooby_04

iTrader: (4)

Depends on their personal experience i.e. how many they've seen struggle/fail trying to keep up with the demands of a remapped ECU. At the end of the day an uprated one is a circa £100 part which could prevent a failure of the std pump costing you thousands in an engine rebuild, so I guess some would prefer to err on the side of caution.

If you have a Knocklink on your car, it'll tell you if the fuel pump starts to die and your car begins to run lean.

NS04

jaytc2003

iTrader: (1)

I believe its really only the classics that are usually advised to change the pumps. The newer cars from what I have read have better pumps anyway. I uprated mine but that was on a classic that is nearly 13 yrs old

scoobfan

In your cars current state of tune the standard pump is fine.

An uprated pump is normally used if the injectors are changed,
and this is usually for big power mods.

I know the classic pump is good for around 300bhp but not sure
about the newage cars.

Take a look at Andy Forest's site, it has some very good information
on tuning.

www.andyforrestperformance.co.uk
Rob

jasonius

iTrader: (1)

When my 05 WRX was mapped (280/270) Bob R said that the standard pump was fine as the IDC was only ~70-80% iirc..!

Trap2Terrorist

iTrader: (3)

I had my MY01 WRX remapped last November and had the fuel pump changed as a precaution.

It wasn't a necessity but as NS04 said, better to be safe than sorry and that was the advice of my mapper too.

I think it's matter of personal choice and piece of mind.

Neilo

it all depends on your target....if you mention the words "id like three hundred bhp" then they tend to suggest it

Trap2Terrorist

iTrader: (3)

With a new downpipe, uppipe and turbo, 300bhp may not be too far away.....

BrynO

I won't be doing anymore on mine, had the up-pipe done, want to stick with the OE downpipe cat, so I guess I'll need to think about changing the pump if i ever go to the next stage..

Neilo

yeah i know that im ditching that and going for 400 instead

ps. pumps still good for that too