GTI tuning

1der · Post by **1der** » Sun May 25, 2008 6:20 pm

Right im thinking of playing with the cars engine this year.

Ive already got a BMC, and exhaust system. Plan to add a de-cat and cams at some stage also, followed by a remap

What else could i do? porting/ polishing?

any help would be good guys

tegwin · Post by **tegwin** » Sun May 25, 2008 7:10 pm

Im sure this has been discussed in length before...

The amount of money you would have to spend to get a decent power increase from the engine would be pretty high...

It would be fairly easy to add a small supercharger...but would the gearbox take it?

I think most people look at it and just dont bother, either get a faster car or fit the 1.8T engine...

1der · Post by **1der** » Sun May 25, 2008 7:13 pm

it has but couldn,t find the thread that discussed porting etc

im aware it prob would.nt be economical and would make sense to go get another car or a different engine, however i want to persevere with this one

Redline · Post by **Redline** » Sun May 25, 2008 7:31 pm

If you're serious about doing it, I'd recommend looking for some of the old threads by a Greek guy who had the username poussou.

From a few years back, but the information should still be useful:

http://www.tigerstyle.co.uk/poloforum/v ... hp?t=10454

Tim_GTi · Post by **Tim_GTi** » Sun May 25, 2008 7:32 pm

Theres a supercharged GTi around where I'm from. I think he's on his 3rd 'box.

1der · Post by **1der** » Sun May 25, 2008 7:40 pm

thanks for that redline

Redline · Post by **Redline** » Sun May 25, 2008 7:45 pm

No worries.

Just makes me realise I've been a member here far too long

tegwin · Post by **tegwin** » Sun May 25, 2008 8:03 pm

They do say the GTI engines weakest area is the intake/head gas flow...

So if you fitted individual throttle bodies and had a really good go at porting and balancing the head, I suspect that is where your greatest power gain would come from!

If your going really really in depth you could increase the power and rev limit of the engine by stripping the entire thing down and having all the parts balanced and fine tuned (blue printed)...

But thats really REALLY silly money...

1der · Post by **1der** » Sun May 25, 2008 9:58 pm

has anybody attempted throttle bodies on the gti yet?

Si_GTi · Post by **Si_GTi** » Sun May 25, 2008 11:33 pm

1der wrote:has anybody attempted throttle bodies on the gti yet?

Tigz is having a jolly good go I believe!

Tusc_si · Post by **Tusc_si** » Mon May 26, 2008 7:21 pm

Does anyone know who supplies a supercharger that fits or could point me in the right direction to find this out?

Si

tegwin · Post by **tegwin** » Mon May 26, 2008 9:32 pm

http://www.rotrex.com/

Or a mini supercharger would fit, but that might take a bit more thinking!

Mouse_GTI · Post by **Mouse_GTI** » Mon May 26, 2008 10:49 pm

I'm a silly person and would be prepared to pay silly money on my car

CymruPolo · Post by **CymruPolo** » Mon May 26, 2008 11:04 pm

I did think about all this at one point but then I couldn't really be arsed with it all. So much cost with from what I can see as small gains just don't seem worth it.

Mouse_GTI · Post by **Mouse_GTI** » Mon May 26, 2008 11:18 pm

Here is the solution (if you speak German and have a lot of cash):

http://www.sorgmotorsport.de/Kataloge/2 ... t_2008.pdf