Audi RS2 Avant
Engine:
2.2l
Mahle pistons
scat rods
GT3071R turbo (0.63AR)
OEM inlet/exhaust manifold
custom intercooler/downpipe
water-meth injection
70mm catback with x2 200cpi BN pipes catalysts
Stock cyl head with stock ADU cams
Spec 3+ clutch kit for dual mass flywheel
running VEMS with megatune 1.1.27 for 9 months now!!!
Results with Perfomance box: around 410hp with 1.85bar overb. and 1.7-1.8bar steady to redline on 4th gear pulls.
Max torgue reached: 600Nm, but keep it around 580Nm now.
Next year:
Holset super HX40 with 0.70AR
reverse inlet manifold
SQ exhaust manifold
New downpipe
Issues:
Idle control finally solved but always small modifications for fine tuning. I use diode for ISV valve and a combination of ignition based idle and IAC intervention to keep idle steady and allow minimal play when fan kicks in or A/C is working. So far im very pleased with the results
Version 1.1.27 is very stable but would like to switch to 1.1.62 with vemstune.I managed to connect the laptop to ECU on 1.1.27 with vemstune. I will wait for the 1.1.63 version which has the boost control bug fixed, as i use vemstune to control boost with an industrial solenoid valve. Very accurate boost control!!!
15/11/2009
Removing the MAF from the airfilter caused some overboost cut outs for some reason and i had to adjust the boost control figures. Noticed that the offset feature will not accept value 15 on 1.1.27. It will only go from 16 to 14, although when i did save and burn to ECU the value 15, i did notice a change in the highest boost reached.
13/12/2009
After more tests, i had to reduce the boost offset to 12 and redo the boost control vs rpm in order to avoid fuel cuts as it was spiking. But everything seems to be working fine now. I do get a bit of drop in boost on higher revs, but i dont mind. it is minimal,and maybe required as well.
The idle has been altered a bit,but here is a video of how it works now. I am really pleased,and the only thing which has been posted before about A/C control and idle is the one thing that can possibly make it even better.
http://www.youtube.com/watch?v=JR13Wx9h2-0
Marcel has my settings and can work with them or improve them,but the way they are now, it is working quite well.
Car is making about 420hp and 620Nm of torgue.
08/2010
car now has:
SQ exhaust manifold
New downpipe
GT3076R turbo, 0.82AR
reverse Wagner inlet manifold
220psi water injection pump
7A flywheel and southbend clutch kit
Car now produces around 500hp
Im still using 1.1.27version of megatune as Vemstune still gets upgraded every other week and there isnt a version yet that can utilise boost offset feature. Im planning to upgrade to a later version of vemstune as soon as i feel that it is stable and working nicely.
So far im pleased with the results from the car and i drive it everyday!