09-11-2016, 09:23 AM
Join Date: Sep 2016
Total Cats: 0
MX5 with M45 supercharger woes (Megalog file included)
New user here. I'm really suffering with my MX5 and I'd really like some pointers.
The car: MX5 NA 1800
Boost source: M45 (from a mini) 67.5cm pulley
Setup: Dual throttle bodies, down and around intercooler, TDR 150mm pulley, Megasquirt V2, 450cc injectors.
Issue: Lack of boost.
So I have installed the SC, intercooler, megasquirt and injectors and I was getting the whole of 3.5PSI of boost. I then bypassed the intercooler and found that I was getting closer to 5.9PSI. I checked for boost leaks, couldn't find any, so I installed the 150mm crank pulley with the intercooler and I ended up with 5PSI.
As you'd imagine I was very disapointed so ended up purchasing a boost leak tester which I found was loosing boost at around 5.5 PSI - so I sorted that problem out.
Now the maximum PSI boost I am getting is 5.5PSI boost with everything attatched, the system not leaking any boost (apparently).
I have also installed new O rings on to the injectors and blocked off the EGR valve.
So miataturbo, is there anything I'm missing? Is there anything more that can be done?!
I have also included a Megasquirt log of a run earlier today if that is of any help?