Back to stock ECU for emissions = Issues - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to   Members

MEGAsquirt A place to collectively sort out this megasquirt gizmo

LinkBack Thread Tools
Old 04-13-2008, 07:03 PM   #1
Thread Starter
iTrader: (1)
Join Date: Oct 2007
Posts: 18
Total Cats: 1
Exclamation Back to stock ECU for emissions = Issues

Hey guys,

I was switching back to the stock ECU from one of the beta MSPNP9697 temporarily for emissions. Currently the car is naturally aspirated but I will be ordering a hotside mp62 from TDR this week.

My PROBLEM is that once I connected everything back (including the vacuum hose), the car doesn't always start and then tries to cut off when little throttle is applied in neutral. When in gear, the car struggles to move unless I really hit the throttle. The car just shuts off. The A/C is now always cutting the car off.

I have unplugged the battery for several hours and the problem still exists after a 10 minute idle warmup. The check engine light has been on the entire time with the stock ECU back in place.

The only upgrades I have done that the stock ECU is now seeing for the first time is a 9lb flywheel and 93 octane. I do hear a loud bang from the left side of the motor in the 800-1300 rpm range under load.

Does anybody have any advice? Also, what exactly is the electrical connector that has the vacuum hose from the throttle body that the MSPNP used to be connected to.

Thanks for the help.
matredd is offline   Reply With Quote
Old 04-13-2008, 07:25 PM   #2
Junior Member
Join Date: Dec 2007
Location: San Diego to LA, CA
Posts: 297
Total Cats: 0

Did you remove the AFM with MS? If so, you need that back in. Although i dont think the car can start without it on the stock ECU.

Are you talking about the IAC valve?
91NApeewee is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
In what world... curly MEGAsquirt 11 09-22-2015 12:54 PM
Bp5a swap NA8 Will_da_beast Engine Performance 1 09-14-2015 08:06 PM
First to get it out of the way main Meet and Greet 2 09-05-2015 02:03 PM
Dumb question about crank and cam angle sensors AlwaysBroken Engine Performance 4 09-04-2015 02:35 PM

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -4. The time now is 03:23 AM.