[s-cars] rough running when cold

[Elijahallen92 at aol.com]

Hi all, my car is running great when it warms up but when I first start it  
and drive at neutral throttle it feels like all at once the car will just loose 
 engine power for a couple seconds then as fast as it was gone its back. This 
 only happens in the first mile then it runs normal. aAny idea's? The only  
other thing that I'm trying to figure out is every once in a while when I push  
in on the clutch to downshift when coming to an intersection the car will 
stall.  I have switched the ISV with a spare but it still does it. What else 
could cause  this? Thanks for any help.

Elijah (my cars specs to date below)
 
91 Audi Coupe Quattro- AAN engine transplant, K27 hybrid turbo, Bailey BV,  
custom tube header, 3" custom turbo back exhaust with WG exhausted seperate,  
stiffer WG spring, port and polished head with 3 angle valve job, 7A exhaust  
cam, RS2 injectors, RS2 MAF, 19 row Mocal oil cooler, 24x12x3 FMIC, Dahlback  
Racing intake manifold, Pauder Rods, TS tuning SW (soon to be Mihnea tuned), 
ARP  head studs, multi layer steel head gasket, custom dual core aluminum 
radiator,  battery relocated to the rear, custom front crossmember, 11lb aluminum 
flywheel,  clutchnet six puck clutch, H&R springs, Koni adjustible shocks, 28mm 
RS2  front swaybar, 18mm whiteline adjustible rear swaybar, solid aluminum 
subframe  bushings, solid aluminum strut tower bushings (Mance Mounts), Nylon 
control arm  bushings, Five lug URS4 hubs in front with 993 Porsche big blacks, 
custom  aluminum hats with 993 cast drilled rotors in front, new beetle vented 
280mm  rotors in rear with URS4 rear calipers with S8 carriers, s2 gauges, 
30lb boost  gauge, RS2 headlights, RS2 (fiberglass) front bumper, B4 hood, S2 
fogs and  sidemarkers, SSR competition wheels, and a whole hell of a lot of  fun!