All Things Mk5 > Performance Modifications
Who shall I choose to remap my GTI?
rtechniki:
It was an r&d setup to say fook it lets see what a k04 tfsi can do, it was to compile data on all aspects of the tsfi tuning and develpomet methods to find the best methods and limits which has been passed down to the base of the stage1 tuning we offer.. we found all the limitations need on both the common cdl and bwa compression ratio setups.
The findings got added to our retail base stage2+ maps which now hold the fastest k04-065 1/4 times in the uk at 12.1 at santa pod with an s3 and a 12.4s at shakey from a mk5 gti..
The finding have been added to all our tuned tfsi engine which as far are I know are all happy and 80% of the owners are on here...
rtechniki:
--- Quote from: nicky on October 12, 2013, 09:26:15 pm ---Two ed30s with stage2+ with 30bhp difference from the same tuner, 30bhp is quite a big difference.
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is custom mapping Nicky the biggest factor to the final hp is the the hardware and how well it works. The mapping and methods work with the hardware, the mapping could happy tune to 1000hp but is always limited by the hardware. puts a 350hp map on stock car will limit to 300-307hp, more you do to flow the setup and make it effective the more power you will gain post mapping.
rtechniki:
--- Quote from: Pudding on October 30, 2014, 04:45:38 pm ---
--- Quote from: Scottymon on October 30, 2014, 04:26:43 pm ---pmsl.
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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.
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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. :happy2: Any questions about tfsi or tfsi tuning please feel free to ask me I am more than willing to help everyone.
Pikey Motorsports:
--- Quote from: OVERTFSI on October 30, 2014, 09:23:20 pm ---
--- Quote from: Pikey Motorsports on October 30, 2014, 05:42:55 pm ---Not sure if the car was rr elsewhere but it wasnt something what r-tech would do to an average customers car as far as i can remember anyway
And it did go pop at some point i belive.. Wether it was at that point of tune i dunno
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it did I went and ran on jkms dyno ... and got same numbers as r-tech.
The car was running a rich wmi setup... and as we all know the tfsi engines are high compression and knock limited under boost which non det aided will only see 10-13deg advance with 99ron, so the out right flow of the k04-064 is not limited at stage2+ infact the out right power is knock limited which decent tuners will agree with. Now run race fuel 104+ or a rich wmi setup and the knock window moves and the combustion stroke becomes more effective, basically free power from timing advance.
The k04-064 on its out right compressor flow is maxed out around 360-365hp by 6500rpm, so to make 400hp mark you need to be aiming for peak hp closer to 5000rpm where the aggressive compressor of the k04 is in its sweet spot, but combustion pressure and emp is very high so the wmi is used to keep a decent timing window.
Correct you cannot make 60hp from fuel or timing if at the point the turbo is maxed out at 7000rpm.... its never going to happen, so you move the tuning to the left and work on the area where the turbo can give more but limiter by peak cylinder pressure ie knock on a 10.3:1 CR 20v lump..
TIV is removal of the med9 ARMD function which hinders the torque climb rate, with this function remove an unique timing setup can be used..
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cool i wasnt doubting the figures
rtechniki:
not you dude sorry. Pudding above who clearly got confused on how a tfsi and ko4 works when they are tuned hard. I think he will under stand now.
Apr do race fuel setup which also sees 400hp... :jumpmove:
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