GTI Mk6 performance

[PenguinGTI]

Hello, had my Gti 6 now for a good couple of months. well run in.

I know VW quote 207 bhp as the output but I then found this:

The first numbers are a bit bigger than expected. The damp, chill November air is just about ideal for peak dyno readings, and it turns out Renault could re-badge the Mégane a 270 (it produces 268bhp), while the Golf, over 10 per cent up on where it should be (229bhp rather than 207), is almost halfway to having the power promised for the forthcoming R version. The car that already has that new VW Group engine, the Cupra R, is also up a chunk from the 261bhp it’s meant to have, returning 274bhp. Is the dyno at fault? A 279bhp reading for the Focus suggests not – Rapid GB has yet to see an RS with a full 300-strong stable. The upshot of all this is that the 50bhp chasm that should separate Mégane from Focus is really only a 10bhp crack in the pavement. It should make for some interesting times at Bedford.

taken from
http://www.evo.co.uk/carreviews/cargrouptests/246988/ford_focus_rs_v_renaultsport_megane_250_cup_v_seat_leon_cupra_r_v_vw_golf_gti.html

Does this seem right to anyone that their GTI is producing a bit more than initially thought?

I've yet to RR mine. Also when VW quoted 207 bhp, was that at the crank or the wheel?

Any information would be great. Perhaps someone that has RR their Gti (without a map) for some more light?

[Snoopy]

Crank, and you will get different readings on different rollers. for different weather conditions, fans used etc etc all play a part.
Alot of them seem to be around this figure. If you look at the rolling road figures posted by others in the past, or graphs shown on revo and superchips sites most oem mk6 gtis seem to be around  that level. A rolling road is a guide nothing more. Its good at comparing before and after graphs to see any difference a modification on that same day in a few hours has helped make, getting the fueling right or talking cr4p down the pub but little more imo.

[PenguinGTI]

"Alot of them seem to be around this figure. If you look at the rolling road figures posted by others in the past, or graphs shown on revo and superchips sites most oem mk6 gtis seem to be around  that level."

When you say "this figure" are you referring to the 207 bhp or the 220-230 bhp figure?

Just out of interest how much would I expect to get at the wheel if 207 at the crank. Is there a ratio or formula (ie like 75% crank figure etc) or does it vary from car to car?

[Snoopy]

The one quoted by evo the 220-230 one.

Here is a copy of one i saved someone else posted of a standard mk6 GTI a while back from one of the rolling road days.

[PenguinGTI]

Ok, thanks Snoopy.

One more question then... if I assume that my car is putting out 220 at the crank, how would a map affect this?

Superchips are looking at 255bhp (I'm assuming at the crank). Previously I considered this worthwhile over the 207 bhp output but if I'm getting 220bhp then it won't be as big a performance jump as I thought.

Anyone got any experience in this and could advise?

[PenguinGTI]

Hmm... I'm looking at the printout you've put up of the RR results Snoopy. The 224bhp output is pretty close to the ED30 output.

Am I right in saying that the ED30 was the introduction of the same TSI engine as in the Mk6?
If so then could it be that VW have under quoted the Mk6 in comparison to the ED30?

I remember reading that the ED30 had a new engine at the time making it different to a standard MKV GTI.

Again, just a thought...

PS I apologise if this whole conversation has already occurred on the site.

[VWKev]

VW are conservative with their figures.

I remember there being a thread on here not long ago that had the mk5 gti being tested and they were getting it around the 6 sec mark.

[Snoopy]

The edition 30 has the older engine design but modified head, block, bigger turbo etc etc, Its similar to the Audi S3 engine, SEAT Leon mk2 Cupra/Cupra R and the new mk6 Golf R engine.
The golf Mk6 GTI uses the new EA888 engine design with a chain driven cam rather than belt driven. It did see life in the last year of the mk5 GTI but only it seems in the USA. It came out in the uk in a VW branded car first in the scirocco then into the mk6 golf..

If you can find the thread i pinched that photo from there was also mk5 GTI, Mk5 Edition 30s and modified mk5's tested at the same time as a ruff guide.

As you say most rechips are around the 255 to 270 area and so a starting point maybe of 225 meens you maybe getting less bhp/£ than you thought. Its best to check the graphs they quote first to see what there base (OEM spec cars) graph figure was and there this new figure is, to find the gain they got. If they started with a car with 225 and it goes to 255 you can then see any gain, imo always go by the gain not the bragging big number.

[FamilyDub]

Am I right in saying that the ED30 was the introduction of the same TSI engine as in the Mk6?

No. The standard MKV ran on a K03 turbo, while the ED30 ran a K04 and slighty different internals.

VW are conservative with their figures.

^^^ Yes, Kev. Especially bhp and 0-62 times. A magazine - sorry, forget which - got a standard MKV to 62 in just over 6.0 secs.

[keelaw]

A magazine - sorry, forget which - got a standard MKV to 62 in just over 6.0 secs.

What you mean like 7.0 seconds



LOL - sorry for the crap joke but this thread has deja vu stamped all over it