Author Topic: GTI Turbo  (Read 1435 times)

Offline SmeeDub

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GTI Turbo
« on: 13 July 2005, 21:46 »
Hello there, as you can see i'm a newbie, not just to this forum but Dubs too.
Only had the motor a few weeks and i wanna get some more horses from it, Pleeeeeeeeeeeeeeease help.
Can anyone give me an idea how easy or hard it is to fit a larger turbo intake pipe and a diverter valve please. i have a haynes manual which i am now thinkin wasnt a good buy cos it gives you very limited info on petrol turbo.
Also do i need any special tools?
Thanks

Offline topher

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Re: GTI Turbo
« Reply #1 on: 13 July 2005, 22:25 »
Diverter valve is a piece of p!ss to swap, just 3 hose clips, its worth checking the vaccum hose (little skinny one that comes out of the top) all the way along its length for any splits, they go brittle over time and crack quite easily.

Inlet pipe is a little trickier, ramps help because its so much easier with access from underneath.. you WILL need to remove your lower valance if you drive up ramps though. So that's a couple of torx screws behind the front of the wheel arch on each side, then it just pulls off with a bit of a tug.

There's only one allen head bolt holding the inlet pipe on, and thats on the turbo itself, the rest is just hose clips. It's quite a tight seal to the turbo though so it needs a bit of a wiggle to pull it off.

If it's a silicone pipe you're replacing it with (like i have on mine, make sure you buy the correct one for your engine code) then again its just hose clips to fit it, the allen bolt is no longer used so you need a big clip to go over the pipe to secure it to the turbo inlet flange. If you've bought an alloy one like the Neuspeed part, then just re-use the allen bolt to attach it.

One last tip.. before you fix the pipe to the turbo (which is the most fiddly bit of the job.. scraped knuckles time) attach the little hose to the bottom of the new pipe, saves a lot of hassle trying to get it on once it's in place.

All in all.. 10 minutes max. to fit the diverter, and give yourself an hour minimum for the TIP (turbo inlet pipe)

toph.

Offline Lewy

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Re: GTI Turbo
« Reply #2 on: 13 July 2005, 22:43 »
As long as the DV is still intact, and as far as you know still working, don't bother changing it, as an aftermarket one does absolutely naff-all for engine performance. This is backed up by many different independant tuners, but not by manufacturers, as they want your cash. The Bosch one which is supplied by VAG is just as good as the aftermarket ones, but suffers from diaphragm failure, so if your DV goes tits-up, then might be a good idea to replace it with an aftermarket one, just for sheer reliability issues.

I've also read conflicting stories about the TIP. The neuspeed one gave 2bhp on the car I was reading about, and it was revo chipped, full stainless exhaust, plus a k&n panel filter to boot. Have you thought about getting a revo/amd/apr free trial re-map, this may then point you in the right direction as to what to do next. One other tuner to look at is Jabbasport, they offer tailor-made 'chips', thus enabling you to tune your car to your desired parameters.

Have a gander at http://www.uk-mkivs.net/

Have fun

Offline SmeeDub

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Re: GTI Turbo
« Reply #3 on: 14 July 2005, 00:17 »
Thanks for the info guys, checked out the link and it seems people are warning about revo trial.
DV has gone silly so i have ordered an after market one. not enough cash at mo for a full remap. is it worth changin inlet pipe?
I'll have to check engine code, i think its AUM but i may be wrong, car is 2001 with traction control and i believe that is AUM.
 :undecided:
Thanks again