Author Topic: supercharging an 8v gti  (Read 18533 times)

Offline Khare

  • Serious forum addict
  • *
  • Posts: 7,627
  • The bear that khares
Re: supercharging an 8v gti
« Reply #10 on: 13 January 2010, 19:22 »
I think the g60 cam would be a good start :wink:

Go and have a look on clubgti, lots of info
Will do dude, cheers!  :smiley:

Offline Khare

  • Serious forum addict
  • *
  • Posts: 7,627
  • The bear that khares
Re: supercharging an 8v gti
« Reply #11 on: 13 January 2010, 19:47 »
Ok from what I read the M45 is Ok for up to about 10 psi, hard to get anything more out of it, some people are running 12 though. However, I'm looking at running about 5psi or so, as anything over 7.5psi is bad on stock internals. Can't find that much info on club gti apart from what I've posted here already. Also read that a crossflow head is a good option. Opinions? I know DH has one on his track toy and he will be dropping an ABF in there soon, he said the head would be up for sale then and if I was interested he would make a deal with me  :smiley: However if the cross flow head requires lots of hassle to make it work with the charger then I won't bother.

So far it seems like if I buy an M45 charger and megasquirt ECU I could fabricate my own brackets and tensioner and run a low boost set up. Doesn't sound too bad or too expensive tbh....Well under a grand and it's possible.

Thoughts on intercoolers? G60 set up or FMIC needed or will running no intercooler be ok with only 5psi?

Offline Wayne

  • Sir Postalot
  • *
  • Posts: 32,051
Re: supercharging an 8v gti
« Reply #12 on: 13 January 2010, 19:51 »
Whetever happens your going to need to drop you c/r with a spacer plate and the standard ecu will be no good, you need a standalone set to cope with adjustments as required when it comes on boost.

Worth a read for the basics: http://en.wikipedia.org/wiki/Supercharger

Edit, I have got my wires crossed, looks like a M45 will do it: http://www.thefang.co.uk/eaton.htm
« Last Edit: 13 January 2010, 19:55 by Wayne »

Offline Wayne

  • Sir Postalot
  • *
  • Posts: 32,051

Offline topher

  • Administrator
  • Serious forum addict
  • *****
  • Posts: 9,594
  • fully functioning
Re: supercharging an 8v gti
« Reply #14 on: 13 January 2010, 20:12 »
does anyone know if the standard 8v ECU copes with a charger? or does it need MS or G60 ECU for sure?

I can probably provide you with maps for the oem ecu that will work, but ideally you want a map sensor in the equation. 3d mapping ftw!

Offline Khare

  • Serious forum addict
  • *
  • Posts: 7,627
  • The bear that khares
Re: supercharging an 8v gti
« Reply #15 on: 13 January 2010, 20:13 »
Dropping CR is a must I know, forgot to put that in my summary.
Megasquirt is my best bet as Danny is a master at using it and he can help me get it set up and tuned properly. Where can MS be bought and how much does it cost? eBay?

I had a read of the supercharging thread in the maintenance section  :smiley:

does anyone know if the standard 8v ECU copes with a charger? or does it need MS or G60 ECU for sure?

I can probably provide you with maps for the oem ecu that will work, but ideally you want a map sensor in the equation. 3d mapping ftw!

So it can work with the standard ECU, but it will obviously be better with MS right?

Offline JC

  • 10k hero
  • *
  • Posts: 13,429
  • Back in the North.
Re: supercharging an 8v gti
« Reply #16 on: 13 January 2010, 20:19 »
your insurance company are going to love you  :grin:

Offline topher

  • Administrator
  • Serious forum addict
  • *****
  • Posts: 9,594
  • fully functioning
Re: supercharging an 8v gti
« Reply #17 on: 13 January 2010, 20:21 »
well you can still scale the fuel and ignition to rpm and there's a certain amount you can get from a maf, which is passable for a supercharger as it's belt driven so is more linear than a turbo but if you can work it to pressure aswell you can take a few more "chances" for a better drive and more power.

Offline Khare

  • Serious forum addict
  • *
  • Posts: 7,627
  • The bear that khares
Re: supercharging an 8v gti
« Reply #18 on: 13 January 2010, 20:24 »
your insurance company are going to love you  :grin:
indeed  :grin:

well you can still scale the fuel and ignition to rpm and there's a certain amount you can get from a maf, which is passable for a supercharger as it's belt driven so is more linear than a turbo but if you can work it to pressure aswell you can take a few more "chances" for a better drive and more power.
I see, so with a custom map in the standard ECU it will work and produce decent power, but not as much as it could. Better investing in MS then.

Offline JC

  • 10k hero
  • *
  • Posts: 13,429
  • Back in the North.
Re: supercharging an 8v gti
« Reply #19 on: 13 January 2010, 20:30 »
you won the lottery khare > ?

or you pimping ya ar$e out ?  :laugh: