Hello people. Story so far... a friend of mine owns an Escort mk4. At some point, and after seeing my conversion, he wanted to do the same transplant to his car. After some search, he found a reputable garage...500 miles away from where we live, and drove the car to them to do the transplant. They did a full refurbish of the engine prior to install it to the car, new shells, springs, gaskets, etc etc. Problem was that the garage that did the transplant, had no electrician... so they bodged the loom, connected the fuel pump to run continyously, had A LOT of corroded wires, "forgot" to supply the CO pot, running the engine with wrong wirring on the TPS, and some other nice things that I can write for days... it also "runs" on stock boost, with beige injectors, and has a Garrett T3 turbo. When he took it back after a fight with the garage, since they had it for 3 months almost and never finished it, he said that enough with that joke, I want my car back. Of course as you realise, they finished it in the fastest way they could,so he can have it, and now the car consumes petrol like it is a Volvo tractor, idles like f@@ck, stumbles at accelerating, some times when boost hits boost limit etc etc... When he took it back, I had a look and managed to fix most of the problems, I wirred a CO pot correctly, fixed the TPS wirring, installed a fuel pump relay to run the fuel pump from the ECU,unwrapped the loom to check for other faults etc etc. Car runs much more better now, boosts fine, he ordered a wideband to set it up, but my problem is that if it idles for some time it starts to hunt a bit. It is not missfiring, it sounds like it is going to turn off momentarily, but it comes back again. After 2-3 minutes it does it again and works fine too. I am thinking that perhaps the injectors are a bit bigger than what is needed and floods the engine at idle. I set the CO pot about where my setting is, I set up mine with a wideband, and did the same setting at my friends pot. It is a rough setting, when I made it a bit leaner it idled much much better but I didn't want to lean it more to avoid melting anything. I told him not to drive it till his wideband arrive and install it so we can set it up correctly, but it seems we are in the correct route. Is there any chance that the injectors could cause erratic idle, am I correct on thinking that way?