Stage 1 Re-Map, should I buy and fit a filter first?

[RedRobin]

Hi Robin, this is where it goes a bit 'grey'! I mean, i am planning to have a Twintake, then full TBE (BCS), then a custom map (1.5) from R-Tech, hoping that i will get perhaps 260bhp, maybe even a bit more, but i am being told conflicting comments reference the HPFP, you for example are suggesting that it is better to have it, others are stating categorically that it's not required unless you are having a Stage 2+ (R-Tech Stage 2)!? I have a Mk V Golf GTi..

All comments welcome, as most confused now!

Andrew

....Okay, relating my experience to your setup: My first mod was a Milltek TBE, then a Stage 1 remap (Revo with adjustable settings), then Revo Stage 2 followed by a Twintake, all still on OEM fuel pump. JKM who are also very experienced on the 2.0T FSI (as you doubtless already know and agree) found that the extra efficiency of the Twintake (ITG would definitely be similar) when combined with Revo Stage 2 resulted in occasionally 'overworking' the OEM fuel pump. So the solution (until I had an APR HPFP) was to reduce my Revo settings.

I would be confident that Nick at R-tech would advise and remap according to your individual car. So, take his advice rather than mine but hopefully my individual experience may help you understand the principles and what can possibly/probably happen.

A fuel pump might typically cutout or hesitate when subjected to demands beyond those allowed for by VAG - This is not what you want while hard on the throttle during an overtake!

[gigolo456]

Interesting point though Robin. Am i right in saying that a HPFP is only a few hundred quid, and relatively easy for a specialist to fit??

[RedRobin]

Interesting point though Robin. Am i right in saying that a HPFP is only a few hundred quid, and relatively easy for a specialist to fit??

....Relatively easy for a specialist to fit or possibly someone experienced (not like me!) - It just requires great care AFAIK.

An Autotech HPFP is 'only' a few hundred quid because it's only the replacement of the internals into your OEM pump body. JKM strongly advise against them and although those with them post that they are totally happy I have heard some stories, one involving fire, which meant that I bought the much more expensive APR pump (~£700 IIRC). If you don't want to spend the money for peace of mind with an APR, then I would advise buying a brand new OEM pump from VW/VAG and having the Autotech internals fitted in that. However, personally i would save up for the APR or, of course, not go as far as modding your car quite so much and hence being able to work with the stock pump.

Again, if you are going to R-tech, take his advice - View him as the expert on your individual car (as I do with JKM). I don't think he is against the Autotech pump as much as either myself or JKM.

I'm trying to be as objective and practical for you in my advice as I do personally favour the APR pump for a Stage 2 or 2+ car.

[gigolo456]

Cheers Robin, i will certainly ask R-Tech about a new HPFP, hoping he will say it's not necessary for a Stage 1.5 with them!? I say this because i have an insurance quotation of £490.00 for those 3 mods, ie Twintake, TBE (valvetronics) from BCS, and a Stage 1.5 custom map from R-Tech...
 

[56OctyVRS]

^^^^
It's as Gareth says. And my review may offer you some additional helpful information:  http://www.mk5golfgti.co.uk/forum/index.php/topic,9988.0.html

You would benefit more fitting a sports cat downpipe than an intake. The standard air filter will flow up to about 270bhp to 280bhp and a stage 1 map wouldnt be near that. If you fitted a downpipe you could go straight to stage 2 and have about 260bhp and a more driveable car.

....Firstly, Stage 1 is totally "driveable". But perhaps you mean something different than I understand the term 'driveable' to mean.

Secondly, be aware that if, having fitted both high-flow downpipe and air intake and a Stage 2 remap, you will probably find you then need an aftermarket HPFP to avoid cutouts etc. The slippery slope is great fun but starts getting expensive.

What I meant by more driveable was that the stage 1 is good but runs out of puff. Where as the stage 2 map gives a bit more in the mid range and top end.  The issue about the hpfp is really down to how aggressive the map is setup as to whether you get fuel cut.  Although sometimes fuel cut can be down to a worn or sticky fuel regulator valve.  Mine had fuel cut at stage 2+ but I changed it for the RS4 valve and it runs prefectly.

[gigolo456]

I have just spoken with an Independent VAG specialist in Doncaster, and he suggested that if i do go for a Stage 1.5 with R-Tech (same as usual Stage 2 with others), and if i have a new HPFP fitted, it could lead to further problems down the line, eg with the cam-follower! However he did suggest that i have a new 'bucket' fitted, although i didn't quite grasp what this actually is, any ideas folks??

Andrew

[56OctyVRS]

Its called a cam follower .  If you click the link it willshow you how to and what one looks like

http://www.briskoda.net/forums/topic/142836-how-to-change-fuel-pump-cam-follower-on-2-0-tfsi/

[gigolo456]

ahhh, are you suggesting that the cam-follower and 'bucket' are one and the same??

[56OctyVRS]

The follower is bucket shaped.

[gigolo456]

Cheers, any ideas y he mite want 2 change only that and keep the standard fuel pump??