Originally Posted by bmkpriest
So just get the AFPR, run e85, and get bigger injectors and it should run fine? I daily drive a Infiniti g35 so I don't care that much for the Miata I just wanted to challenge myself with a custom turbo kit
'Fine' in this case means yeah, it probably wont explode under boost, and it wont stall out at a light. It will probably get horrible mileage. It will probably be reasonably quick for a 6 psig car if you mess with base timing.
Keep in mind that stock tune is crap to begin with, and we are basically just amping it up here. So it will probably run rich most of the time, yet lean out at some points under boost. I honestly have no idea what your timing curve will look like, but if you encounter knock at like 5000 rpm (which is certainly possible) then you will dial back the base timing. Which will have the effect of making the car boggy in normal driving situations.
Basically, if you want to flog this thing for ultra-cheap and don't give a damn, the idea is pretty cool. It will probably work and be good fun. I would totally do this if I had a blown out nasty car where I planned on replacing the engine with another 1.8. Because DILLIGAF and I like making crap fast.
I would not do this if the engine is in any way important to me or if I planned to resell. Or if I was putting the effort in on a lot of fab work. Or much effort at all really.
If I had the cash that I just did not give a damn, I would do a PnP MS3x, artech, borg, xidas, 6uls, rivals, OSG, 6 speed, 949 1.9L, all in a catfish chassis, and laugh at the serf car BS around me as it all went backwards on throttle tip-in. Or just buy an Exige.
The moral of the story is that you should probably just get an older MS unit, a real fuel system, and go from there and wind up loving the car. Which properly turboed will eat your G35 alive BTW.