sorry if im a bit slow ...but does this mean that if u put the k04 onto the regular GTI u'll get less lag....but also worse performance than the ed30/pirelli when the boost comes on?
This sounds right. The main issue is the compression ratio. That's where the lag comes from.
Basically if you just take a NA engine and then lower the compression ratio, performance will dramatically decline. Which is basically what happened to the 2.0T engine in this case; before the turbo kicks in, it's just basically the same engine with a lower compression ratio, hence lower performance. The bigger turbo on the S3/Ed30/Pirelli kicks in a bit later (I think around 2500, rather than 2000 on the GTI) due to its larger size, which exacerbates the lagginess.
I remember Jeremy Clarkson complaining about the lag in the S3 when he first drove it. I think it only seems so pronounced compared to our cars, which have basically no lag whatsoever. Compared to an sti or an evo or skyline, I still think it's pretty good.
Chipped the engine puts out around 230kw. Which would be a no brainer, lol. Albeit a little scary in our fwd platform when the 180kw or so I'm running is enough to stretch the chassis' talent.
Below is the power and torque curves for the Ed30 engine vs. the stock GTI engine; you can clearly see that the boost comes on later than in the GTI (due to the larger turbo) and that the initial dip is a lot lower than the GTI (due to the lower compression). Its a little hard to tell because of the inconsistent scaling, but if you look closely you can see the difference.
Cheers
