[scarceller]

In my opinion any EFI to be used on the street really needs a very accurate way to meter air and the very best is a modern day MAF meter. MAP only setups are OK but leave holes in the tune for drive ability and TPS setups are even far worse. MAP with TPS is somewhat better but you just can't beat a MAF for perfect metering of fuel and air under all conditions. This is why just about every modern day engine uses MAF devices, they simply work!

So if you plan to drive this car primarily on the street you already have a clue from what you said: "Car hates the cold" this is very telling that the tune is wrong and not properly done and changing mechanical parts like the TB won't fix it!

If you want a street car that drives well and is reliable under all environmental conditions this may not be the car for you. At least as it's tuned now. And to fix a tune can cost $1000 in tuning time, paying the tuner and paying for proper dyno time.