MSPNP MSPNP specific Megasquirt related discussion.
Sponsored by:
Sponsored by:

Used MSPNP2 with old tune 94'

 
Old 02-12-2019, 03:51 PM
  #1  
Newb
Thread Starter
 
Join Date: Sep 2018
Posts: 16
Total Cats: -17
Default Used MSPNP2 with old tune 94'

Obviously a newb question but here we go:
I bought a used MSPNP2 for my 1994 1.8. The prior owner had it set for boost. I'm going to be running a wideband and MS with no boost for a while to learn to tune and whatnot.
So here's my question... For the initial tune, I think that all I need to do is power up the MS (key on) and after having downloaded the base tune for my car, start a new project and load the original base tune. By doing that the MS should be reset for my car/no boost right?
Frankenfab is offline  
Old 02-12-2019, 04:40 PM
  #2  
Senior Member
iTrader: (1)
 
Join Date: Dec 2010
Location: Farmington Hills, MI
Posts: 1,143
Total Cats: 151
Default

Yes, boost scaling is done in the tune, so base map equals map sensor scaling from the MSPNP2 base map. However, I believe the base map is setup for boost.
acedeuce802 is offline  
Old 02-12-2019, 05:17 PM
  #3  
Newb
Thread Starter
 
Join Date: Sep 2018
Posts: 16
Total Cats: -17
Default

I remember that too.. EG base map allowing boost. I think that running the old tune would just mess up fuel maps etc because it was setup for larger injectors. But so yeah, starting a new project and loading a downloaded basemap is essentially just starting over right?

**edit*** It wouldn't mess up fuel maps. That's just stupid. I think it would just run way rich??
Frankenfab is offline  
Old 02-12-2019, 05:38 PM
  #4  
Senior Member
iTrader: (1)
 
Join Date: Dec 2010
Location: Farmington Hills, MI
Posts: 1,143
Total Cats: 151
Default

Yeah, just use the basemap. You don't even need to rescale for N/A, especially if you're going to boost in the future. The extra resolution isn't really needed.

Correct, fuel maps may change a bit with new injectors, but the bulk of it is in the Req. Fuel value and dead times.

Just for info, you'll have to tune everything anyway. Base maps are just to get the car running, they should not be assumed to give you a good and safe driving car.
acedeuce802 is offline  
Old 02-12-2019, 05:40 PM
  #5  
Newb
Thread Starter
 
Join Date: Sep 2018
Posts: 16
Total Cats: -17
Default

Ok, so just reload the basemap I can get online and start again. That's what I figured if I'm interpreting what you're saying correctly.
Frankenfab is offline  
Old 02-13-2019, 04:26 AM
  #6  
Newb
Thread Starter
 
Join Date: Sep 2018
Posts: 16
Total Cats: -17
Default

Also... Where can one find an options port/26 pin plug? I cannot find one searching.... it's it just a generic from a computer store or? I know I will need it to pin my AEM wideband.
Frankenfab is offline  
Old 02-13-2019, 09:29 AM
  #7  
Senior Member
 
Join Date: Mar 2014
Location: Jacksonville, FL
Posts: 1,167
Total Cats: 139
Default

A tune that was made for a turbo car can run perfectly without a turbo, as you simply never hit the 100+ Kpa values in the tables.

For example, when I was upgrading my turbo, I removed the original Turbo then put the stock exhaust manifold on and drove the car for two months without the turbo setup with zero changes to the tune.
borka is offline  
Old 02-13-2019, 12:11 PM
  #8  
Newb
Thread Starter
 
Join Date: Sep 2018
Posts: 16
Total Cats: -17
Default

Interesting... Were you running a stock injector configuration at that point or had you already upgraded injectors as well?
Frankenfab is offline  
Old 02-13-2019, 01:21 PM
  #9  
Senior Member
 
Join Date: Mar 2014
Location: Jacksonville, FL
Posts: 1,167
Total Cats: 139
Default

Originally Posted by Frankenfab View Post
Interesting... Were you running a stock injector configuration at that point or had you already upgraded injectors as well?
I am running Flow force 640cc injectors.

car was all setup and tuned turbo car, with FF 640cc injectors, gt2560r turbo, aem WB, etc etc...

then i removed turbo/manifold/downpipe.

installed stock exhaust manifold/header, and drove it naturally aspirated for 2 month's until my EFR satup came in, without touching a single MS3 setting

in your case, you bought a ms2 from a different car, with different injectors etc... so his tune might not work for you.

but if you scale the maps to what ever injectors you are running, the whole map might be fairly close*

*assuming his tune wasnt **** to begin with.

or just load up base map and start from scratch.
borka is offline  
Old 02-13-2019, 03:13 PM
  #10  
Junior Member
 
Join Date: May 2011
Location: Miami
Posts: 158
Total Cats: 12
Default

I vote for loading up the stock basemap and starting fresh to learn what it is that you are doing as you make adjustments.
andym is offline  
Old 02-13-2019, 03:51 PM
  #11  
Moderator
iTrader: (12)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 18,718
Total Cats: 2,343
Default

I agree with Andy. You never know what obscure setting has been changed that might cost you an engine or hours of frustration.
sixshooter is offline  
Old 02-13-2019, 04:13 PM
  #12  
Newb
Thread Starter
 
Join Date: Sep 2018
Posts: 16
Total Cats: -17
Default

I agree as well! Anyone have input as to where to get an option port plug? Cannot seem to find one searching online/at DIY.
Frankenfab is offline  
Old 02-13-2019, 05:27 PM
  #13  
Senior Member
iTrader: (1)
 
Join Date: Dec 2010
Location: Farmington Hills, MI
Posts: 1,143
Total Cats: 151
Default

https://www.diyautotune.com/product/...gtail-harness/

It's a DB26 connector. You'll find it cheaper elsewhere, but it'd likely be a solder cup rather than this pigtail'ed crimp connector.
acedeuce802 is offline  
Old 02-13-2019, 05:34 PM
  #14  
Newb
Thread Starter
 
Join Date: Sep 2018
Posts: 16
Total Cats: -17
Default

Rad. Ordered.
Frankenfab is offline  
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
guacamole
DIY Turbo Discussion
0
05-21-2017 11:09 AM
Sidewaystocurb
MEGAsquirt
9
12-27-2016 10:43 PM
b&t
Meet and Greet
3
09-22-2015 09:32 AM
debris91
MEGAsquirt
14
06-25-2012 04:03 PM
wes65
DIY Turbo Discussion
12
09-20-2007 10:07 AM


Thread Tools
Search this Thread
Quick Reply: Used MSPNP2 with old tune 94'


Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.