taijohnsen

I don't think there is even a choice here. The 8474 should out perform the 8374 with close to identical response.

Thanks MotHot, It has been a long build, but I have enjoyed the journey for the most part Sorry for the delayed response, but the tuner took a while to get back to me with the logs. The internal power calcs of the EMtron say 350kw engine, this run was 350rwkw @ the wheels (roller)

🤣👍

The genV twin port is $500ish AUD and the std one is $300ish AUD. I managed to get the e-iwg landed from USA for $350 AUD. A bit of 3D printing and a carton of beer sorted the rest. More pics in my thread http://soarercentral.com/sc-forum/messages/263854/354587.html

The new genV turbosmart twin port is probably the way to go. It has a better lower seal and a universal joint to the wastegate actuator arm. I wasn't very impressed with the first two versions (non twin port and the first twin port) but the latest one should be good. Use a low pressure spring or it'll be too sensitive. The e-iwg cost wasn't too bad (less than the turbosmart actually), but yes, you will have to adapt it to fit and have an ecu that can drive it. Position data is nice.

Semi off topic, but Geoff. Is there any way if getting some of the EFR 3D models that I have been seeing used (SEMA shows, Papadakis exhaust manifold video etc) I have searched, but found nothing really. I have no commercial interest with it, I'd just love to print one

Hi Geoff, can you explain in more detail what did and didn't work well? Are these for the 74mm turbine? And how much would you want for one?

1) Can your ECU drive it? Spare DBW output or external h bridge driver and control strategy. 2) Do you have the space? Sticks out further 3) Price. RRP for these in Aus is $600+ just for the actuator. I designed my setup so I could revert back to pneumatic easily.

Any turbo you want complete authority over. They aren't affected my exhaust back pressure and you can run any pressure you want at any time. No minimum spring etc.

Thought this may interest some of you. 1.5J with the IWG 8374 EFR controlled my an EMtron KV8. DBW is a 68mm Bosch unit and the second DBW output is controlling an electronic wastegate actuator from the new 2020 supra (which is also a 3L motor and BW turbo) The control strategy is interesting, but seems to work well and having the actual position of the gate is pretty cool.

Not unless it's bleeding boost or compressor stalls on throttle lift off... My 7136 used to comp stall a lot, and I don't have a VL commo, so I put the 50/50 kompact shorty on it with a lighter spring. I'm not using it any more if anyone would like it. It's bronze now, not black tho...

Conical seat would be for an o-ring I would have thought... Perhaps they thought people might run a banjo fitting.. It's not that big of a deal really...

I had the dual port turbosmart bov on my 7163 to help with compressor surge on throttle lift off. No longer an issue with the 8374, so if you'd like a cheaper 2nd hand one let me know. The other main difference is adjustable spring tension for the given vacuum of the engine.

Thank you for taking the time to reply to everyone Geoff, I will double check the oil return line for possible internal deformation etc. I have taken the opportunity to upgrade to an 8374 with the 0.92 rear on it to give the motor a bit of an easier time, but would still like to see the 7163 at its limits ?