'90 Miata w/NOW '01 VVT engine DIYPNP Megasquirt!
Posted: Tue May 11, 2010 11:08 am
Some details about the car...
It started out when I picked it up as a retired Spec Miata. It had the '90 short nose crank issue, which allowed me to get the car for a good price. I have since installed a '96 engine, which I have been running for the last year or so. Last month I took the Megasquirt plunge and ordered a DIYPNP unit based off a Microsquirt. More details about this unit can be found here: http://www.diypnp.com. I am very happy with the results so far. I went from opening the box to having the car running on some downloaded basemaps in about 5 hours. The best part was not having to cut a single wire in the car. I still have a long way to go as far as tuning goes, but the car runs better than it did on the stock ECU. I just have to fix a few issues like the idle, while the car idles smooth as silk, 1400 is a little higher than I would like. Anyway, enough talking, how about a dyno sheet? The RED line is the car's previous best on the stock ECU, the BLUE line is the last run I made the other night with the Megasquirt installed. Please remember that this is a basic tune with very little time spent working on it. You can see that if you look at the fuel curve, the waves show how untuned it really is.
Some details on the car that did not change between dyno runs:
'96 Engine
RACELAND brand Ebay header (I know... but I could not resist $90 shipped new)
Racing Beat intake elbow
Koyo Monster radiator
RX-7 AFM (Was removed for the Megasquirt runs)
'96 Crossover tube with the stock chamber in place
Again, the RED line is the car's previous best on the stock ECU, the BLUE line is the last run I made the other night with the Megasquirt installed. Here is a picture of the completed unit. I have since installed four more wires to control the stock fuel pump and also to enable launch control.
It started out when I picked it up as a retired Spec Miata. It had the '90 short nose crank issue, which allowed me to get the car for a good price. I have since installed a '96 engine, which I have been running for the last year or so. Last month I took the Megasquirt plunge and ordered a DIYPNP unit based off a Microsquirt. More details about this unit can be found here: http://www.diypnp.com. I am very happy with the results so far. I went from opening the box to having the car running on some downloaded basemaps in about 5 hours. The best part was not having to cut a single wire in the car. I still have a long way to go as far as tuning goes, but the car runs better than it did on the stock ECU. I just have to fix a few issues like the idle, while the car idles smooth as silk, 1400 is a little higher than I would like. Anyway, enough talking, how about a dyno sheet? The RED line is the car's previous best on the stock ECU, the BLUE line is the last run I made the other night with the Megasquirt installed. Please remember that this is a basic tune with very little time spent working on it. You can see that if you look at the fuel curve, the waves show how untuned it really is.
Some details on the car that did not change between dyno runs:
'96 Engine
RACELAND brand Ebay header (I know... but I could not resist $90 shipped new)
Racing Beat intake elbow
Koyo Monster radiator
RX-7 AFM (Was removed for the Megasquirt runs)
'96 Crossover tube with the stock chamber in place
Again, the RED line is the car's previous best on the stock ECU, the BLUE line is the last run I made the other night with the Megasquirt installed. Here is a picture of the completed unit. I have since installed four more wires to control the stock fuel pump and also to enable launch control.
