Steve's Megasquirt/tunerstudio Help Thread

Box 2 · Mar 29, 2017

a91what said:
ok I checked the tune over and made some changes, look them over carefully and try to run the car. I need datalogs to help you further.

Awesome!!! how do I share my datalog on here? via email? thank you very much.

Ryan

Sparky714 · Mar 29, 2017

Box 2 said:
Awesome!!! how do I share my datalog on here? via email? thank you very much.

Ryan

You can just upload the datalog here by clicking upload a file. And I want to give a shout out to @a91what. He's been helping me tune my DIYPNP. A little more tweaking and I'm all set! Thanks Steve!

CarMichael Angelo · Mar 30, 2017

Sparky714 said:
You can just upload the datalog here by clicking upload a file. And I want to give a shout out to @a91what. He's been helping me tune my DIYPNP. A little more tweaking and I'm all set! Thanks Steve!

Sparky714 · Mar 30, 2017

madmike1157 said:

Yup, it will be on its way to him next week

Box 2 · Mar 30, 2017

I loaded the tune but its raining here in Chicago...Looks like Saturday will be the best to try it out. I will share my logs Saturday.

Ryan

a91what · Mar 30, 2017

lol I should hire Mike as a business consultant.... always making sure I am not giving too much of my time away for nothing...

I don't get paid for this nor do I charge but tips are welcome.

90sickfox · Apr 7, 2017

Man, I've got a problem Steve. My car hasn't started in the last couple weeks. I thought I had done something to the tune ( being the idiot I am ).

I compared my current one to the one you sent and the only changes were where I inputted my required fuel in basic settings. So, no real changes were made....timing offset was still the same at 10.

With all that figured out....I data logged in MegaLogViewerHD. Found the MS is only reading about 125 cranking rpm. Ofcoarse , my cranking rpm is set to 450.

Now, I just put a new 1000ca AGM battery in last weekend and I know its cranking faster then 125 revolutions. My distributor pick up is new and so is my TFI module.

I did wire a tach to my coil... Do you think that could be causing some type of interference ? I'm going to remove it in the AM but wanted to know what you thought about it. I also did hook it up correctly... I think...

Figured I'd document this issue in case there are any other dummies like me out there.

Edit; my engine running threshold is 450rpm.

a91what · Apr 7, 2017

Make sure the settings are set to 8 cylinders. Also there is a tach output on the main board in the MS.... use it for the tach signal, if you unhook the tach that's wired in and get a proper signal to the MS then problem solved.

BTW great job using the data logger for troubleshooting I'll get you learned yet.

90sickfox · Apr 7, 2017

I'll do that tomorrow. Thanks man ! I'll report back.

90sickfox · Apr 8, 2017

Thanks again, Steve !

The tach and everything works. I had to reset my timing, again. Smh

The car is alive. Think I'm learning....slowly. The tach works fine... My cranking rpm is a hair under 200rpm. That rpm seems normal with the research I've done.

All of my spark plugs were fouled from cranking with the required fuel at 10.3. My fuel pressure is only 44psi and I have 42lb injectors in a 331. Cleaned them and they're OK.

Haven't data logged yet.

90sickfox · Apr 8, 2017

This is my datalog from my start. After a couple minutes my rpm hits the roof vacuum comes up, too. I have no idea whats causing this.

it was doing it previously...my temp stays steady around 200.....195 thermostat. I can't find any vacuum leaks but wont pull more than 10 vacuum until I hit the rpm surge.

Any help would be greatly appreciated. This surge is the reason I started screwing around with the idle. Should I just auto tune for the driving end and leave this alone for now ? its kinda scary when the rpm starts shooting above 2500.

a91what · Apr 12, 2017

just got done looking at the datalog and if you chart rpm with PWM idle duty you can see the car idle away at 900 rpm with the iac open 100%.... when the duty cycle drops the rpm comes up.... this is backwards to what should be happening. the valve is working in reverse.
go into startup/idle then [idle control] on the right side of the box in pwm idle settings change the valve mode.

this should fix the problem the mode should be set to "normal" 0% =closed

on a side note the datalog shows you idle very lean in the 20afr range please verify this.

FoxMustangLvr · Apr 12, 2017

@a91what You the man!

p.s. What version of TS are you using?

a91what · Apr 12, 2017

FoxMustangLvr said:
@a91what You the man!

p.s. What version of TS are you using?

I use tunerstudio MS Ultra v3.0.18 ---- with ms 2 I prefer the 3.4.2 firmware ----- ultra cost me extra but helps when I'm trying to build tunes for a large array of platforms even makes the MS3 pro stuff simpler.

AUBURN1111 · Apr 12, 2017

Prior to purchase Ive been reading this and other threads, haven't seen this questions asked: Can you retain cruise control functionality after swapping factory ecm to ms?

90sickfox · Apr 12, 2017

The cruise control uses a separate module ( under left side of dash ). The module controls a vacuum reservoir behind the left fender. The cable from that hooks up to the throttle body.

I'd have to check wiring schematics but I'm sure it could be made to work with MS.

There are aftermarket cruise control kits that work off the same principal...on/off switch, set/resume switch, vacuum hose, clutch switch, brake switch, cable to TB, and module.

I believe the cruise control in fox mustangs works independent of the ECU.

90sickfox · Apr 12, 2017

Man, I feel like an idiot...( most of the time I do )

I just added PWM to the datalog graph and instantly saw the problem...smh. I'll change those settings and check out how he runs tomorrow after work.

The lean condition is from an air leak at the v band behind the turbo before the WB. I planned on fixing it when I put the down pipe sleeve on. Starting and idling has been my focus thus far. I'll fix it before I really drive it.

90sickfox · Apr 12, 2017

Just checked my idle control settings in TS. The valve mode is set to normal, 0℅=off.

I switched it to inverted, 100%=off. We'll see what happens tomorrow. I'll post a catalog.

Thanks, Steve !!!

a91what · Apr 12, 2017

You may have one of those rare valves that are backwards. Depending on the application I think the polarity for the iac valve on Grand Marquis was reversed. (I would need to verify that statement)....

90sickfox · Apr 13, 2017

I've read were people had to reverse polarity with certain IAC valves. I'll see if I can command it open and closed and watch what it actually does.

Steve's Megasquirt/tunerstudio Help Thread

Box 2

Member

Sparky714

CarMichael Angelo

my rearend will smell so minty fresh,

Sparky714

Box 2

Member

a91what

SendMeUrDataLog

90sickfox

Wasn't a pretty sight...and I've got big hands

a91what

SendMeUrDataLog

90sickfox

Wasn't a pretty sight...and I've got big hands

90sickfox

Wasn't a pretty sight...and I've got big hands

90sickfox

Wasn't a pretty sight...and I've got big hands

Attachments

a91what

SendMeUrDataLog

FoxMustangLvr

I love my Pimp

a91what

SendMeUrDataLog

AUBURN1111

90sickfox

Wasn't a pretty sight...and I've got big hands

90sickfox

Wasn't a pretty sight...and I've got big hands

90sickfox

Wasn't a pretty sight...and I've got big hands

a91what

SendMeUrDataLog

90sickfox

Wasn't a pretty sight...and I've got big hands

Similar threads

Steve's Megasquirt/tunerstudio Help Thread

Member

my rearend will smell so minty fresh,

Member

SendMeUrDataLog

Wasn't a pretty sight...and I've got big hands

SendMeUrDataLog

Wasn't a pretty sight...and I've got big hands

Wasn't a pretty sight...and I've got big hands

Wasn't a pretty sight...and I've got big hands

Attachments

SendMeUrDataLog

I love my Pimp

SendMeUrDataLog

Wasn't a pretty sight...and I've got big hands

Wasn't a pretty sight...and I've got big hands

Wasn't a pretty sight...and I've got big hands

SendMeUrDataLog

Wasn't a pretty sight...and I've got big hands

Similar threads

Privacy & Transparency

Privacy & Transparency