MSPNP MSPNP specific Megasquirt related discussion.

NO MAF: Novice question

Thread Tools
 
Search this Thread
 
Old 03-01-2010 | 06:43 PM
  #1  
Carthusiast's Avatar
Thread Starter
Junior Member
 
Joined: Feb 2007
Posts: 77
Total Cats: 1
Default NO MAF: Novice question

It's time for me to be a noob with a topic I really know nothing about. I spent about 3 hours searching but couldn't come up with anything...

I am running without an MAF on my new 94 PTE miata race car and just installed a MS PNP. I selected '94/95 No MAF' project file and started messing with basic things. However, the car is running horribly and I have a feeling that I must do more to tell the ecu that I am not running an MAF. Through searches, it seems that I might have to flash an updated firmware to the ecu that supports the GM IAT. Is this correct? If this is correct, can someone point me in the right direction as to where to download this update, and instructions on how to flash it?
Old 03-01-2010 | 06:48 PM
  #2  
buffon01's Avatar
Elite Member
iTrader: (9)
 
Joined: Sep 2008
Posts: 5,609
Total Cats: 13
From: Michigan
Default

Please tell me you installed the actual GM AIT sensor and wired it to the MAF. If you didnt do that then sir youre an idiot, and if you did I only read like the first sentences.
Old 03-01-2010 | 07:19 PM
  #3  
Carthusiast's Avatar
Thread Starter
Junior Member
 
Joined: Feb 2007
Posts: 77
Total Cats: 1
Default

Originally Posted by buffon01
Please tell me you installed the actual GM AIT sensor and wired it to the MAF. If you didnt do that then sir youre an idiot, and if you did I only read like the first sentences.
GM IAT is wired to pin 3 and 4 on MAF wiring harness. Just opened up MS folder, ms9495 no maf, went to download_firmware and opened it up. Downloaded it and flash to MS, loaded the Msq back on. Is that all there is to it to get the ecu to read the gm iat? For some reason through searching I thought I had to do a lot more...
Old 03-01-2010 | 11:07 PM
  #4  
buffon01's Avatar
Elite Member
iTrader: (9)
 
Joined: Sep 2008
Posts: 5,609
Total Cats: 13
From: Michigan
Default

Originally Posted by Carthusiast
GM IAT is wired to pin 3 and 4 on MAF wiring harness. Just opened up MS folder, ms9495 no maf, went to download_firmware and opened it up. Downloaded it and flash to MS, loaded the Msq back on. Is that all there is to it to get the ecu to read the gm iat? For some reason through searching I thought I had to do a lot more...
When I installed my MS into my car I didnt select the any of the options that Megatune offered. I opened a "new project", where I selected no MAF. However I dont have the MSPNP from DIYautotune, I have a MS (Brain) which is prewiered to run the AIT ONLY. I would say try to do it by means of opening a "new project". If that doesnt help your problem shoot a PM to Brain, or Joe.
Old 03-01-2010 | 11:19 PM
  #5  
Braineack's Avatar
Boost Czar
iTrader: (62)
 
Joined: May 2005
Posts: 79,821
Total Cats: 4,152
From: Chantilly, VA
Default

did you unplug your coils before flashing?
Old 03-01-2010 | 11:21 PM
  #6  
buffon01's Avatar
Elite Member
iTrader: (9)
 
Joined: Sep 2008
Posts: 5,609
Total Cats: 13
From: Michigan
Default

Originally Posted by Braineack
did you unplug your coils before flashing?
Oh **** forgot that. I hope you did or you might have fried them
Old 03-03-2010 | 11:53 AM
  #7  
Ben's Avatar
Ben
Supporting Vendor
iTrader: (33)
 
Joined: Jul 2006
Posts: 12,659
Total Cats: 134
From: atlanta-ish
Default

Originally Posted by Carthusiast
GM IAT is wired to pin 3 and 4 on MAF wiring harness. Just opened up MS folder, ms9495 no maf, went to download_firmware and opened it up. Downloaded it and flash to MS, loaded the Msq back on. Is that all there is to it to get the ecu to read the gm iat? For some reason through searching I thought I had to do a lot more...
All you need to do is install the new IAT sensor and then flash the NO MAF firmware with the coils unplugged.
__________________
Chief of Floor Sweeping, DIYAutoTune.com & AMP EFI
Crew Chief, Car Owner & Least Valuable Driver, HongNorrthRacing

91 Turbo | 10AE Turbo | 01 Track Rat | #323 Mazda Champcar

Originally Posted by concealer404
Buy an MSPNP Pro, you'll feel better.
Old 03-03-2010 | 12:12 PM
  #8  
chicksdigmiatas's Avatar
Elite Member
iTrader: (11)
 
Joined: Apr 2008
Posts: 2,497
Total Cats: 0
From: Texas, 'Murica
Default

You DID flash the no maf firmware right? Just selecting the project fine does nothing. Load the firmware up. COILS UNPLUGGED! Try again. It will remind you to unplug the coils 3 times before it reflashes anyways.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
bigmackloud
Miata parts for sale/trade
19
01-08-2021 12:24 PM
Quinn
Cars for sale/trade
6
10-23-2016 08:58 AM
JesseTheNoob
DIY Turbo Discussion
15
09-30-2015 03:44 PM
skipstr
Miata parts for sale/trade
2
09-28-2015 11:53 PM




All times are GMT -4. The time now is 03:21 PM.