1997 Miata stock 1.8 w/no modifications. Stock injectors. Stock everything(for now).

96-97 MSPNP Gen1.
MAP hooked up.
Uploaded base map(MSPNP MM9697 Base Map 012808) from Megasquirt folder.
Changed fixed angle to 10 for timing set.
I also have the IAT sensor so I can remove the MAF.

So let's begin. The car runs and drives great with the stock ECU. After plugging in the MSPNP and experiencing a no-start issue, I plugged my stock ECU back in so I can drive it to run errands. I would love to know why the engine isn't starting/idling. Sometimes it would start for a few seconds and then die. I have a near complete turbo kit sitting in my room waiting to be installed, but first I would like to gain experience by tuning the stock 1.8 with the IAT replacing the MAF. Any type on inputs would be appreciated. Thanks

 

are you getting tach in TS when cranking?

 

Yes. It moved up to 575 when cranking.

 

My current gauge readings if it'll help with the diagnosing process. The RPM gauge does move when cranking.

 

why is it sitting at 60kPa? do you have it setup for the correct MAP sensor? that can pose a problem.

 

I'll have a look when I get home. I always thought that was weird but didn't think much of it until you pointed it out. Hope it fixes the problem! Are my Cranking Pulse Widths and After Start Enrichments looking okay? Hopefully I can tune in the 550cc injectors after I get everything worked out!

 

it's probably the issue.

 

MAP type is set to 400kPa which should be correct considering it is a 96-97 MSPNP.
(configurating on Megatune)

 

It's set to 400kPa..don't know what else it could be.
#group MAP_SENSOR "MS-I Map Sensor Type"
00086 #unset MPX4115 "MPX4115 - 115 kPa, Usually only on v1.01 boards"
00087 #unset MPX4250 "MPX4250 - 250 kPa, Default MAP sensor since v2.2 hardware"
00088 ;obsolete GM300KPa "GM 3.0 BAR - 300 kPa"
00089 ; Incorrect info from Aquamist
00090 ; Correct info from http://www.not2fast.com/electronics/...P_12223861.pdf
00091 ; Use MPXH6300A instead of GM300KPa, they have identical specifications.
00092 #unset MPXH6300A "MPXH6300 - 300 kPa" ; http://www.freescale.com/files/senso.../MPXH6300A.pdf
00093 # set MPXH6400A "MPXH6400 - 400 kPa" ; http://www.freescale.com/files/senso.../MPXH6400A.pdf
00094 #endgroup

 

Megatune was sitting at 88kPa. Started it with that. I'd rather use TS though but hey..I'm idling!

 

I'll be trying a way to configure the MAP setting but other than that I'm good! Drove it around my neighborhood with the MAF removed and it ran decently good. Next step is to connect my AEM Wideband and get the AFR and Spark settings right! (Correct me if I'm wrong)

 

Okay I figured it out. When I created my project I overlooked the MAP setting because I was a noob. Of course I still am noob but a smarter noob. Everything is good and I'm driving/tuning it. Thanks for the help Administrator. Thumbs up.

 

With MS1, you also need to specify MAP sensor type under Project Properties as well as in the tune file itself. Glad to hear you're making progress.