pmsl.
I normally refrain from such outbursts, but seriously, I respect R-Tech as a tuner but this guy seriously needs to calm down a bit, and stop wagging his tail and humping the table leg every time they are mentioned.
I know of 2, maybe 3 highly skilled tuners, but they are not widely publicised because they don't hang out with the kids on facebook or come onto forums. It's not all about punching numbers into the mapping software. The engine is just an air pump and there's no way a K04 can pump enough air in to make a genuine 400hp. The VV Race cars see 400ish from a hybrid K04 sure, but not a straight 04 off the shelf that's thrown onto 8P S3s and ED30s. Take the engine out of the car and put it on a proper engine dynamometer and it will be nowhere near 400.
Mapping is just manipulating the rail pressure to see 0.8 lambda in the meat of the boost and lambda 1 every where else. Nowhere do I see boost pressures quoted, air mass figures, ignition timing at WOT, intake air temps etc etc to support these hp numbers thrown around.
Normally you see 340ish hp and torque from 1.4 bar spike, held at 1.2 to the red. Now 1.4 is pretty close to the ragged edge for a K04. Either 400 is coming from seriously over spinning it - turning the intercooler into a nice interheater in the process, so WMI just cools it back to where it would be normally running less boost - or there's some pixie dust sprinkled on that engine. 60hp cannot come from fuel and timing adjustments.
Oh and TiV is just sales speak for flat spot removal.
I struggle with making a true linear 400hp from a hybrid, by linear I mean 400hp close to peak rpm, they all struggle due to one huge factor common with the k04-064... the exhaust manifold which give high emps which contributes to knock and low post head effectiveness. not many hybrids run a linear 400hp without the wmi in there, Take the l04xx which I tuned on a 9.8:1 CR CDL s3, knock limited sub 400hp by 6500rpm, yes can pull out timing and run more boost which at 1.7bar is more heat and it dont work. That ended at 412hp with wmi then went on to prove the point on the 1/4 mile by running a 11.9s.. L0400 I hit al knock wall at 385hp non wmi.
TIV is the name I used to promote a unique method of tuning, on the tfsi med9 it was about removing the anti buck maps ARMD maps, which are also in play in the me7 1.8T maps which over the year all tuners missed out, we was the first to remove them and tune with a refined ignition output which opened all new methods to gain performance under all conditions, the main one was lower egts. I started to use the term TIV mapping, to say remove the timing based torque interventions, I then shared this info with another tuner, you might know him? Bill at badger5? he then started to use the term TIV, which I had trademarked to stop him confusing people.
by the way 1.4bar peak is so 2008..... its at 1.7bar @4400rpm now because its all about tuning the k04 like a small turbo and not trying to flow linear like a big turbo, tune it for the power band which is going to get used...... and by turning the inlet cam maps in to maps for performance and not to save the planet to meet strict emission laws there is a whole new avenue of power to unlock!!!
By reading your past posts on the forum it seems you dont understand the concepts of the tfsi gdi engine? you question why is dont run stratified injection so what is the point?? the point is and the development was to build a high compression engine which can run hot lean clean and safe on the edge of the knock window. With pre mixed combustion setups like the 20v 1.8T the engine would knock its tits off, but they got around the knock at high cr by running homogeneous fuel injection which gives a perfect boundary layer, to aid cooling and emissions. The tfsi can run happy lambd 1 with homogeneous lean injection. Yes the mpg would be much better if it was stratified lean burn setup.
I can see your point fully dude, but make your own mind up and not what others tell you. Any questions about tfsi or tfsi tuning please feel free to ask me I am more than willing to help everyone.
Thanks for that, I appreciate your time to explain. I was sceptical about 400hp, probably because I am old school and my Edition 30 is by far the newest VW I've owned, so you are correct, my TFSI knowledge is not there yet. I thought all the TFSI engines were stratified (isn't that what the S in TFSI stands for?) but obviously not! I did wonder why I only saw 28mpg average from my ED30 when it was standard. Only 2mpg more than my old R32!
400hp also seemed improbable because I was running into low rail pressure problems at just 307hp. I've since fitted the Loba pump, fresh injectors and fresh lift pump and I'll be heading back to the dyno for another shot.
Now that you've explained you can push the K04 to 1.7 bar and it's not held all the way to the redline, the numbers make more sense to me. From a personal perspective, I'd not be happy pushing past 1.5 bar, just for reliability and to avoid fitting a clutch! Mega EGTs from the stock cats and the turbo being so close to the exhaust valves also concerns me. I take it binning the front cat and using a 3" DP alleviates this problem quite a lot?
Thanks for the TiV info. I've not delved too deeply into Bosch tuning, I mainly do standalones and have done VR6 Turbos and R32s. I'm a bit old school.....like Bill Brockbank, who I do know, sort of, from his DTA 1.8T tuning days.
So the BYD engine has variable intake cam phasing? I read the VW self study PDF and they quote 42 deg of advance on the inlet, but how can that be when the cam phaser is on the exhaust cam? On the EA888 engine, the phaser is on the intake cam where you'd expect it to be. I therefore assumed the phaser on the BYD motor was just for internal EGR, along with -15 deg timing when cold. Anyway, if it does have inlet phasing, happy days!
Yes knock is the killer. I think the TFSI has a decent combustion chamber like the R32, so high timing isn't necessary. I remember running 24 deg advance on my VR6 Turbo @ a bar of boost and 5500rpm because it has sh*t combustion chambers, so the fuel burns a lot slower. How much more advance can you run with WMI in the TFSI engine? I bet the TFSI runs mid to high teens timing at say, 90mph and 30% throttle? That and lambda 1 is what gets the EGTs rocketing as well. I'll do some data logging as I'm curious. I'm sure more timing can be added in those load sites.