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Author Subject: tuning
vrsy

Newbie

Location: gillingham

Registered: 23 Mar 2010

Posts: 11

Status: Offline
Post #1
all my previous modded cars have been either VAg or ford, and have had turbos, so im not to familiar with the likes of tuning on N/A engines.

few questions(ive had a search around)

1-what GOOD companies are there that remap the GTI-6.


2-i know on my current car a stage 1 remap requires no mods, stage 2 requires exhaust and intake, and stage 2+/3 requires all the above and an intercooler and uprated fuel pump.
Is this the same for the gti-6?

3-what is the cost Incl fitment as well as the REALISTIC reliable power output for a car wit the following

a. full exhaust system, air intake remap
b. throttl bodies it exhaust etc
c. turbo
d. supercharger

4-can someone supply me with some good websites for tuning this engine

cheers guys
Posted 26th Mar 2010 at 23:43
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soton_s16

Senior User

Location: Southampton

Registered: 18 Jun 2007

Posts: 703

Status: Offline
Post #2
Not being rude, but have you done a search on the site? As most of the above has been covered numerous times so there is a wealth of information already here Smile

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Posted 27th Mar 2010 at 01:47
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adam b

Seasoned Pro

Location: The Nam

Registered: 24 Jan 2006

Posts: 12,828

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Post #3
vrsy wrote:

a. full exhaust system, air intake remap
b. throttl bodies it exhaust etc
c. turbo
d. supercharger


a. None whatsoever
b. you need pistons, rods, cams, tbs, matched exhaust inc manifold. Depends how long you want it to last, but say about 250BHp. Expensive though.
c. No idea as its not that common.
d. Search as there are loads of Lynx high (400+) and low (250BHp) boost s/c cars on this site. Cost is up to you really I think.

e. V6 can be done too. 194BHp and 200lbft for around

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Posted 27th Mar 2010 at 02:26
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monkeyman

Seasoned Pro

Location: Sunny St Albans

Registered: 01 Oct 2008

Posts: 1,955

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Post #4
The 306 isn't a dragster, it's a handling car. You make it go faster by improving both the handling (tyres/suspention/brakes) and improving your driving skill.

A remap will make little difference unless you fit cams. The engine is good out of the box, unless you are thinking of spending

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Posted 27th Mar 2010 at 19:57
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vrsy

Newbie

Location: gillingham

Registered: 23 Mar 2010

Posts: 11

Status: Offline
Post #5
i know they are more about the handling mate, that is the reason im getting one, however my current car is 287Hp 300ibft, so i want something that can give me that shove into the seats as the GTI-6 wont with std power

predominately my focus will be on handling as this is more of a toy than a daily driver, but once thats done, i want at about the same power to weight ratio i have now which is 197hp/ton
Posted 27th Mar 2010 at 20:28
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monkeyman

Seasoned Pro

Location: Sunny St Albans

Registered: 01 Oct 2008

Posts: 1,955

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Post #6
Get away with those figures Razz

There isn't a great deal you can do that is cheap, I've got a DIY induction kit and straight through mid pipe exhaust, gives an extra few bhp, but the base systems is not bad, just a bit heavy. I doubt remapping would add anything more.

To get the best from a TB setup, I think you'll need aftermarket management so that adds another grand. The low boost SC is a great improvement, and there are a few drivers with this tried and tested approach, it also gives the option of high boost Shock , with an engine rebuild/uprated components. Power delivery is very linear, unlike a turbo, so no boost surprises.

I don't know of anyone with a turbo conversion, but I guess it would be a similar cost to the low SC system + research time and cost.

If you can get hold of an old BTCC engine, they are great, but rare and expensive.

A cheap upgrade is vernier cam pullys, and cam adjustment. I'm looking to do this but need to find out which are the best for it, Kent, Piper CatCam or an other, and also the timing adjustments. There's not much clearance between valve and piston. This can give a noticeable improvement in mid range torque, but not monumental.

Uprated cams can give 10-12 hp at the top end, but you loose a bit of midrange.

You can strip a fair amount of weight form the 306 to improve pwr/weight ratio. The final drive can't be swapped but fitting 50 instead of 55 profile tyres gives a roughly 5% improvement in gearing.

I'm at a RR meet near Stanstead tomorrow,http://www.306gti6.com/forum/showthread.php?id=121300&page=1 there is also a Kent meet http://www.306gti6.com/forum/showthread.php?id=121095&page=last

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Posted 27th Mar 2010 at 21:37
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vrsy

Newbie

Location: gillingham

Registered: 23 Mar 2010

Posts: 11

Status: Offline
Post #7
LOL, those figures are pukka mate. 2.5k worth of engine mods on a 2.0 Tfsi car go a long way in the power department. the cupras for the same money shoot from 240 upto 360Hp.


thanks for the reply mate.
im not after spending to much money on the engine, TBH. couple grand max. coming from a history of turbo'd engines im used to a good
Posted 28th Mar 2010 at 00:21
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monkeyman

Seasoned Pro

Location: Sunny St Albans

Registered: 01 Oct 2008

Posts: 1,955

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Post #8
I think cams, throttle bodies, and remap / new engine management will get 210, low boost SC is around 240.

At the RR meet a guy with a stripped and caged 205 Gti took me for a spin. I know the car is different, different gearbox etc, but he had a plate diff on it. What a difference! No understeer, just powering in and out of corners.

At the first one I was thinking When is he going to brake?, but just a dab then BRRRRMMMMMMM, powering through and out the corner. Shock

However, they're more expensive than a torque based one, and I guess while the gearbox is out a new clutch and lightened flywheel make sense to do, so it's a chunk of money, but for track use you will slash circuit times.

The guy does sprint/track races and easily beats Elises, and gets close to Caterhams.

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Posted 30th Mar 2010 at 00:40
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