Looking for a tune

For discussing B&G MS-I/MS-II set-up and tuning of fuel parameters (including idle valves, etc.).
Forum rules
Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.

If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0). For tuning/troubleshooting questions, please attached a datalog and your MSQ file to your post.

If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days

The full forum rules are here: Forum Rules, be sure to read them all regularly.
Post Reply
Rockin C Racing
MegaSquirt Newbie
Posts: 13
Joined: Mon Dec 22, 2014 4:58 pm
Location: Vancouver, WA
Contact:

Looking for a tune

Post by Rockin C Racing »

I'm looking for a tune as a starting point. I know each engine has it's own quirks and no one tune is the same even if the engines are "the same". I'm looking for either someone here to share their tune, or a place to browse and download a tune.

The specifics: MS1 v2.2 (fuel only)
Engine: sbc 383, 13:1 comp, 36 lb injectors @ 42 psi (42 lb injectors @ 56 psi), port injection, edelbrock 4 barrel throttle body (1000 cfm), aluminum heads, msd ignition

Not sure what other information someone would need to know. Any help would greatly be appreciated.
MS1 v2.2 with DIY relay board installed
on 1996 Soran rear engine dragster
Matt Cramer
Super Squirter
Posts: 2951
Joined: Sat Jul 03, 2004 11:35 am

Re: Looking for a tune

Post by Matt Cramer »

If you have estimated torque curves, you could use the VE table in the registered version of TunerStudio to get a decent starting point on the VE table.
trakkies
Super Squirter
Posts: 1162
Joined: Tue Dec 30, 2008 3:06 am
Location: SW London, UK

Re: Looking for a tune

Post by trakkies »

It does sound the easy way to start out with a 'near enough' tune from someone else. And it may well be for someone very familiar with MS who can see any obvious 'gotchas' in the MSQ at a glance. But if you're new to MS, it makes sense to go through the setting up procedure from the base tune after loading fresh code. If only to familiarise yourself about what everything does.
If we were dealing with a factory EFI installation where every example was the same, the same tune would be fine. But since we're talking about individual conversions, no two are identical.

IMHO, the best way is to get the engine running reasonably well from basics. Then by all means compare the tune from a similar engine to yours.
Dave P, London UK.
Rover V-8
MSII V3
EDIS
Tech Edge Wideband
Rockin C Racing
MegaSquirt Newbie
Posts: 13
Joined: Mon Dec 22, 2014 4:58 pm
Location: Vancouver, WA
Contact:

Re: Looking for a tune

Post by Rockin C Racing »

As suggested, I installed the base tune and went through those settings as outlined in the manual. The engine won't start. The engine was run on an engine dyno with a carb. We did the break in and set the timing at this time. I've checked and the engine has spark and I can smell fuel, so I know it is getting it. Does anyone have any suggestions as to why it won't start?
MS1 v2.2 with DIY relay board installed
on 1996 Soran rear engine dragster
kjones6039
Master Squirter
Posts: 618
Joined: Sat Jul 22, 2006 7:02 pm
Location: Eureka, Nevada USA
Contact:

Re: Looking for a tune

Post by kjones6039 »

Post your msq and a log of an attempted start.

Ken
1979 Corvette - 383 CID SBC w/ Holley Pro-Jection 900 CFM TBI, 4-85 lb lo-z injectors & Walbro 255 pump
MS2 v3 w/ms2extra 3.4.0 Release
36-1, Delphi LS2/7 coils in wasted spark, driven by v2.0 logic board from JBPerformance
Spartan Lambda Sensor from 14point7
Rockin C Racing
MegaSquirt Newbie
Posts: 13
Joined: Mon Dec 22, 2014 4:58 pm
Location: Vancouver, WA
Contact:

Re: Looking for a tune

Post by Rockin C Racing »

Here they are.
You do not have the required permissions to view the files attached to this post.
MS1 v2.2 with DIY relay board installed
on 1996 Soran rear engine dragster
Rockin C Racing
MegaSquirt Newbie
Posts: 13
Joined: Mon Dec 22, 2014 4:58 pm
Location: Vancouver, WA
Contact:

Re: Looking for a tune

Post by Rockin C Racing »

Does anyone have any suggestions? I've double checked the ignition system and confirmed it with spark. I've sprayed fuel (using a squirt bottle) in through the throttle body and the car tries to start. And the spark plugs have been dry when I pulled them and checked immediately after an attempt. So conclusion is that I don't think I'm getting enough (or any) fuel to start the engine. Thoughts?
MS1 v2.2 with DIY relay board installed
on 1996 Soran rear engine dragster
Matt Cramer
Super Squirter
Posts: 2951
Joined: Sat Jul 03, 2004 11:35 am

Re: Looking for a tune

Post by Matt Cramer »

There seems to be a problem with the RPM input; it's only reading 30 RPM. It also appears the MAP sensor may be unplugged.
Rockin C Racing
MegaSquirt Newbie
Posts: 13
Joined: Mon Dec 22, 2014 4:58 pm
Location: Vancouver, WA
Contact:

Re: Looking for a tune

Post by Rockin C Racing »

The MAP is not unplugged. I've also blown and sucked on the vacuum hose to the MAP while running the software and it increases or decreases depending whether blowing or sucking. I don't know what to say about the RPM signal. It is a brand new MSD ignition box that has a square wave output. Again the engine isn't starting and just cranking it over, so I wouldn't expect much for an RPM signal.
MS1 v2.2 with DIY relay board installed
on 1996 Soran rear engine dragster
Post Reply