Megasquirt turbo 351 - Ford Mustang Forums : Corral.net Mustang Forum
 1Likes
  • 1 Post By Assassin
 
LinkBack Thread Tools Display Modes
post #1 of 12 Old 09-10-2016, 09:21 PM Thread Starter
Registered User
 
93Svt331's Avatar
 
Trader Feedback: (38)
Join Date: Feb 2006
Location: Midwest
Posts: 1,211
Megasquirt turbo 351

Using it on a 358,t56 turbo mustang. Here are my numbers for fuel and timing. Im looking for feedback on any numbers that look off or areas that need work.

I should be shooting for 11.2-11.5 afr under boost correct?

Attached Images
File Type: jpg image_1473556745077.jpg (87.9 KB, 32 views)
File Type: jpg image_1473556771664.jpg (82.4 KB, 27 views)
93Svt331 is offline  
Sponsored Links
Advertisement
 
post #2 of 12 Old 09-14-2016, 03:46 PM
Registered User
 
Trader Feedback: (0)
Join Date: Oct 2002
Location: Shawnee, Kansas (Kansas City)
Posts: 243
Yes, 11.5 is a safe AFR to target.

I assume you're not running very much boost at all if your load % only goes up to 130kPa? That's only about 4psi. If you're running more than that, I'd suggest bumping up your load column so it more accurately reflects what it will see. Around 170kPa (load %) would be about 10psi for example, depending on your altitude.

FYI, the ECU will use whatever value is in the top row of the table if you exceed that load value so you don't have to worry about it shutting down or something if you exceed the table values.

93Svt331 likes this.

Stinger-Performance.com - Plug & Play PiMPxs Standalone ECM's for 83-95 Fords
06 GT - 67mm Turbo | 85 SVO - 63mm Turbo | 86 SVO
Assassin is offline  
post #3 of 12 Old 09-14-2016, 04:36 PM
Registered User
 
Badboss351's Avatar
 
Trader Feedback: (11)
Join Date: Aug 2002
Location: SC
Posts: 2,661
Do you have the upgrade with autotune? It is so worth the money, as long as you have a good calibrated wideband

XSRcylinderheads built nitrous 445".......5.32 @ 136 w/1.30 60ft (best 60 to date is 1.252)
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Badboss351 is offline  
Sponsored Links
Advertisement
 
post #4 of 12 Old 09-19-2016, 11:30 PM Thread Starter
Registered User
 
93Svt331's Avatar
 
Trader Feedback: (38)
Join Date: Feb 2006
Location: Midwest
Posts: 1,211
Crap. Just noticed I loaded the wrong pictures. I'll get updated ones tomorrow. I'm running about 10lbs now. I'm having trouble syncing my wideband with megasquirt. Does the wideband need to have the same power/ground as ms?
93Svt331 is offline  
post #5 of 12 Old 09-20-2016, 08:10 AM
Registered User
 
Bluecoupe22's Avatar
 
Trader Feedback: (15)
Join Date: Feb 2015
Location: Alabama
Posts: 254
They told me that the wideband needed to be grounded to the same ground as megasquirt is , some ppl suggest grounding to battery , my experience grounding with megasquirt worked !
Bluecoupe22 is offline  
post #6 of 12 Old 09-20-2016, 10:35 AM Thread Starter
Registered User
 
93Svt331's Avatar
 
Trader Feedback: (38)
Join Date: Feb 2006
Location: Midwest
Posts: 1,211
Quote:
Originally Posted by Bluecoupe22 View Post
They told me that the wideband needed to be grounded to the same ground as megasquirt is , some ppl suggest grounding to battery , my experience grounding with megasquirt worked !
so same ground off frame?(computer harness in the passenger kick panel?) and also into the o2 of the main harness, correct?

thanks for your help!


and what color blue is your mustang? any pictures of it?

90 lx, 408w, T56, 88mm
93Svt331 is offline  
post #7 of 12 Old 09-20-2016, 11:37 AM
Registered User
 
Trader Feedback: (0)
Join Date: Sep 2006
Location: Covington, Georgia
Posts: 1,597
The pick panel is just the case ground. It's best to ground both the ECU and wideband to the battery negative terminal if possible, with the engine block being a second best choice. Good grounds will improve the reading accuracy a lot - Ford went with a chassis ground to save some assembly time, but in my experience, a good chassis ground is usually bad, and a bad chassis ground is horrible.

Matt Cramer
Matt Cramer is offline  
post #8 of 12 Old 09-20-2016, 12:57 PM
Registered User
 
Bluecoupe22's Avatar
 
Trader Feedback: (15)
Join Date: Feb 2015
Location: Alabama
Posts: 254
Quote:
Originally Posted by 93Svt331 View Post
Quote:
Originally Posted by Bluecoupe22 View Post
They told me that the wideband needed to be grounded to the same ground as megasquirt is , some ppl suggest grounding to battery , my experience grounding with megasquirt worked !
w

so same ground off frame?(computer harness in the passenger kick panel?) and also into the o2 of the main harness, correct?

thanks for your help!


and what color blue is your mustang? any pictures of it?
Here is a pic of my car
Attached Images
File Type: jpg IMG_2431_1474390591712.jpg (91.0 KB, 15 views)
Bluecoupe22 is offline  
post #9 of 12 Old 09-20-2016, 10:22 PM Thread Starter
Registered User
 
93Svt331's Avatar
 
Trader Feedback: (38)
Join Date: Feb 2006
Location: Midwest
Posts: 1,211
Finally have the MS and LC2 paired! Will update the fuel tables tomorrow when its light out. Thanks guys

90 lx, 408w, T56, 88mm
93Svt331 is offline  
post #10 of 12 Old 10-16-2016, 02:45 PM Thread Starter
Registered User
 
93Svt331's Avatar
 
Trader Feedback: (38)
Join Date: Feb 2006
Location: Midwest
Posts: 1,211
Here are the tables and last data log.

Seeing about 9-10 psi

Couple concerns:

1. 1st holds boost 5-6 but 2-4 will loose boost seems like the gate opens. Does anyone know why this is happening?

2. When I let off the afr runs lean 22.(car is coasting)

Any tips on fixing the fuel and timing tables? Thanks guys

Attached Images
File Type: jpg IMG_2782_1476643405862.jpg (73.0 KB, 18 views)
File Type: jpg IMG_2780_1476643438428.jpg (73.7 KB, 17 views)
File Type: jpg IMG_2778_1476643459557.jpg (71.0 KB, 16 views)
93Svt331 is offline  
post #11 of 12 Old 10-19-2016, 05:20 PM Thread Starter
Registered User
 
93Svt331's Avatar
 
Trader Feedback: (38)
Join Date: Feb 2006
Location: Midwest
Posts: 1,211
update: fixed the wastegate issue now on to tweeking the tables.

90 lx, 408w, T56, 88mm
93Svt331 is offline  
post #12 of 12 Old 11-26-2016, 08:47 PM
Registered User
 
Trader Feedback: (0)
Join Date: Oct 2002
Location: Shawnee, Kansas (Kansas City)
Posts: 243
Quote:
Originally Posted by 93Svt331 View Post
2. When I let off the afr runs lean 22.(car is coasting)

Any tips on fixing the fuel and timing tables? Thanks guys
The AFR is supposed to go lean when coasting. The factory ECU does this as well. It's known as over-run fuel cut or decel fuel cut. It shuts off the injectors when coasting. This saves fuel, eliminates decel backfiring, and makes it smoother on decel.

Fix the fuel table by either manually tuning it, or using VE Live (auto tune) to let the computer adjust it. Just make sure your AFR table is set to the AFR's you want it to run under varying conditions as this is what it will use to know what AFR to tune it to at idle, cruise, WOT, etc.

Timing can really only be tuned on a dyno, or on a track IF you have a really consistent car and know how to use the results from each pass to adjust timing. Short of that, all you can do is get it in the ballpark.

Stinger-Performance.com - Plug & Play PiMPxs Standalone ECM's for 83-95 Fords
06 GT - 67mm Turbo | 85 SVO - 63mm Turbo | 86 SVO
Assassin is offline  
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Mustang Forums : Corral.net Mustang Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
351 Turbo ??s Rock777 5.0/5.8 Engine Tech 3 05-18-2015 04:51 PM
Bench building 351 turbo 1984 jws4621 Turbochargers 16 01-06-2015 02:36 PM
For Sale 85 MUSTANG 351 TURBO 10.20 139 on et streets strypes1 Mustangs For Sale/Wanted, 1979-1986 5 11-20-2014 03:25 AM
How much power??? 351...67mm turbo... 03SonicBlueSVT 5.0/5.8 Engine Tech 13 08-01-2013 02:25 AM
I need your help with Ford Modular ¼ mile ET Quick list all time mobeydick Drag Racing 27 04-17-2013 02:53 PM

Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome