Found and read this thread shortly after i bought my is220d as i had traded in an impreza wrx for the is220d for cheaper driving. I went for the is220d as it has more power than the 320d and c220 cdi.
At any rate i soon found there is no aftermarket for these cars and the ecu could not be mapped (they can be now).
So in my quest for power i first found a good used tuning box and added that and more recently i made an intake with a cone filter and heat shield using a combination of aftermarket parts (impreza wrx MAF pipe and is250 intake heat shield). The intake does improve power lower down and removed a flat spot between peak torque and peak hp as well as making nice turbo flutter noises and an air pressure whoosh noise if i build boost and then lift off throttle or change gear.
Anyway im revisiting this egr thread and commenting this time as im thinking of doing this either by looping egr to the intake or venting the egr to atmosphere similar to a dump valve as with the intake i seem to have developed a random problem with the car going into limp mode. If i shut the car off and turn it on again or shut off and let sit and then turn on the problem clears and runs normal again. It doesnt throw a fault code when it does this.
I did get a fuel leak detected/large leak fault code coming up randomly when i was using my tuning box at the highest setting. If i shut the engine off and restarted then it would run normal again.
I believe these two limp mode issues are related to my intake and perhaps the turbo flutter/chatter with the intake or the lack of intake restriction compared to the airbox. Id like to try venting intake egr solenoid to atmosphere first and see if that stops or reduces the problem, i will maybe also try recirculating it to the IAT sensor location and maybe also to infront of the turbo to see what does what.
I bought the car with a dpf emulator already installed and i have had no clogging problems so i assume my dpf has been gutted. I think my emulator is dying/dead though as i have had a recurring dpf efficiency fault that will not clear. I erase it and it comes back instantly. The car runs perfectly otherwise..
I want to remap the car properly now that it can be done but want to try the egr as a dump/recirc valve first to see if it helps the limp mode issue that started since making the intake for the engine.
I would ideally like to pioneer a few things for more power from these engines as if you could do what people do to 320d's or tdi vw's with hybrid turbos and other modifications i dont see why the toyota 2AD cant have a similar amount of tuning potential.
I have attached a picture of how the intake is currently. Its wrapped in tape because there are two pieces of pipe there. i need to get them tig welded or make a one piece pipe.
Also here is a video of the sound with the intake. The flutter/surge sounds nice but i think it may be causing my intermittent limp mode problems. Venting egr to atmosphere may stop or lessen the surge/pressure fluctuation in the intake.
