Hey all, ive recently changed my fuel pump for a walbro as the oem pump died, before i changed the pump, higher up the rev range i would lose boost, it would just drop in chunks of 3/5 psi. After id changed it the boost holds better but still drops off higher up the rev range, ive ordered a sytec fuel pump and will see if that changes anything, but is there anything else i should look at? Ive checked all my boost hoses, and changed my n75 valve for a new unit, checked the 007p valve is ok aswell, any help/advice would be great!! Thanks, Dan

Car is running stage 2 fmic, air filter, tip etc

Did you changed your fuel filter?

Walbro is more than enough for your setup.

Log via vag com IDC, if it`s higher than 20ms your injectors are clogged or too small and can`t supply enough fuel. 

Edited 14 November, 201312 yr by Gonzaga

Yes bud fuel filter has been done, will try and get it hooked up to vag com asap. Ive only got a cheap ebay code reader unfortunatley! Cheers for the reply!

I had this problem boost drop by 5psi I fitted a walbro no more probs the walbro pump is fine for the vrs and no point in swapping for anouther pump as there's no prob with the walbro

Ended up swapping the walbro for a sytec pump, walbro kept cutting out when i took a bend with a bit of speed, i still get the drop in boost though. Beggining to think turbo might be on its way out or actuator is too weak?!

I had this problem was number 1 injector would sometimes not boost at all though

Ended up swapping the walbro for a sytec pump, walbro kept cutting out when i took a bend with a bit of speed, i still get the drop in boost though. Beggining to think turbo might be on its way out or actuator is too weak?!

;)

http://www.briskoda.net/forums/topic/296075-brand-new-k300-beach-buggy-hybrid/

;)

http://www.briskoda.net/forums/topic/296075-brand-new-k300-beach-buggy-hybrid/

I wish i had the cash mate :-(

I had this problem was number 1 injector would sometimes not boost at all though

Got to get it logged on vag com bud, just gotta find someone near me haha

Out of interest how high up the rev range mate?

Out of interest how high up the rev range mate?

My guess 5500rpm+ 

If the wastegate was lose, you would be loosing boost @3500rpm where it peeks, not at higher revs where boost is 0.8bar 

The spot my car suddenly looses boost is at 5000/5500rpm but only in 3rd gear upwards

Did u get this sorted? My brother has an 1.8t golf and just fitted a beachbuggy k260 turbo and a walbro pump and 4 bar fpr. Is waiting on a set of Saab injectors to come as well before he gets it mapped again. He's only took it a quick run and in 3rd gear wen on boost it's spluttering. I think it could be over fueling maby? I don't no.

Edited 25 November, 201312 yr by Mattyd8551

Used to only be around 5000+rpm but now has started doing it a lot earlier when put foot down in 5th gear. Bit of a wierd way of describing it but the needle on my boost gauge moves in a waving motion, if that makes any sense haha! I really need to log it and see what comes up its just finding someone near me with the right readers!

Argylevrs hi just about to order a sytec pump for my octy,do you remember the part number and is it a straight swop for the standard one ??? Cheers

Hi mate, ill try and find a link somewhere for you. It was a straight swap mate, took about 25 minutes!

Used to only be around 5000+rpm but now has started doing it a lot earlier when put foot down in 5th gear. Bit of a wierd way of describing it but the needle on my boost gauge moves in a waving motion, if that makes any sense haha! I really need to log it and see what comes up its just finding someone near me with the right readers!

Hi, do you mean the problems got worse with changing the Walbro for the Sytec pump? Or do you mean something else with before? I have similar problems...

Hi, do you mean the problems got worse with changing the Walbro for the Sytec pump? Or do you mean something else with before? I have similar problems...

Threads a bit old mate...

 

Wouldn't mind redeeming though, My vrs has a weird issue where boost drops off by a few psi then rebuilds back up again, all without lifting the throttle. 

Threads a bit old mate...

Sorry about that... ;-) I've searched on fuel pumps, so came to this one. Had a Sytec pump before in my old Astra C20LET

Sorry about that... ;-) I've searched on fuel pumps, so came to this one. Had a Sytec pump before in my old Astra C20LET

is the issue I'm having similar to what you have?

is the issue I'm having similar to what you have?

Yes, I guess so, it is exactly what argylevrs described. Fuel pump is on the suspicious list. There are lots of upgrades that work or don't, hence I want to choose the right one...

Edited 11 July, 20169 yr by dcstuurman