All Things Mk5 > Performance Modifications
Who shall I choose to remap my GTI?
MC71:
A newbie trying to win friends I see! :signLOL: :signLOL:
pudding:
--- Quote from: Scottymon on October 30, 2014, 04:26:43 pm ---pmsl.
--- End quote ---
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.
pudding:
--- Quote from: MC71 on October 30, 2014, 04:39:34 pm ---A newbie trying to win friends I see! :signLOL: :signLOL:
--- End quote ---
I don't need friends like you lot. I think I've got the measure of this forum already.
Pikey Motorsports:
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
rtechniki:
--- 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
--- End quote ---
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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