Maxx ecu is good. I have two to install right now.
As far as boost by speed from the front wheel goes... Think about it like this. In most cases because of drag from the brakes, and wheel bearings as soon as the front wheel comes off the ground it should start to slow down. If the ams sees a decrease in speed it will start pulling boost because it’s targeting off of mph until the front tire touches down and then starts to ramp boost back in. That strategy may or may not slow you down on the drag strip. But pouring in big power from a roll, it works the best IMO.
On non abs bikes I’ve used the factory speed sensor and it works just fine. However it does take a lot more testing to dial it in. If you’re reading rear tire speed, should you get too aggressive with the boost ramp and over power the tire, depending on where you’re at in the boost ramp the ams then just helps to incinerate the rear tire. I’ve been messing around with a few simple bracket ideas to be able to add a front wheel sensor to Busa’s that weren’t equipped with abs from factory.
As far as the G42-1200 goes, I haven’t used or seen one in action yet on a busa. I will say any of the G series stuff is just retarded how efficient that stuff is. Crazy to think you can get a 900hp capable turbo that fits in the same footprint as the typical 450hp capable turbos in stage 1-2 kits.
I remember you saying you were building a stroker motor, and displacement always helps spooling a turbo. So does fuel type. Ethanol especially methanol because you have to burn so much helps with boost response do to more exhaust volume. But with all that said, if you plan to street ride that thing I feel like you’re gonna hate it. It will get in to boost eventually. One thing to keep in mind with small engines with large turbos. Yes they’ll make more power, but the power band is a lot smaller. So power delivery is very peaky.
I looked at the dimensions of that turbo and compared it to a GTX4088. The compact G42 is 10 to 15+mm larger in any given direction. I used the 4088 for a comparison as I’ve installed several super ultra kits with those, and there’s zero extra room. RCC does a good job of positioning that turbo where the full size rad and bodywork still fits. I just don’t see how you could squeeze in anything bigger without making compromises elsewhere.
