MegaSquirt PNP2

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10-12-2019, 07:15 PM
CHILL5.0

MegaSquirt PNP2

Anybody have any experience with a MegaSquirt PNP2 with MS2 firmware? I just installed one due to the fact that after my last engine mod I had my car retuned and its felt like shit ever since. Finally got around to installing a wideband afr sensor and gauge to watch what was happening and it was all over the map as I suspected. Now with the MegaSquirt PNP2 it already cruises around better than before. I've got my idle dialled in pretty good already but I'm going to continue to make a few small tweaks here and there to try and make it even better. I've got my AFR table set, now just have to tweak the VE table and timing table. I've already got the timing table adjusted but just wondering if anybody has experience with this stand alone computer and can give some tips and tricks or advice.

Engine is a 347 stroker, AFR 185 heads that have been re-worked, Edelbrock Victor EFI intake, 70mm TB, no power adders yet, run on 94 octane only. About 10:1 compression or slightly lower.

'89 Fox body.
10-15-2019, 06:34 AM
Scrape

I am sure someone here can help. Quite a few fox experts here.
10-17-2019, 11:29 AM
CHILL5.0

Crickets... That's ok. Tuning going well. Adjusting my cold start each day I can PWM% and WUE%. Have not gone over 3500RPM yet but it seems to have nice smooth power under light accel and feels really good so far. I just need to work on my throttle response from idle and between gears when taking foot off pedal and back on.
10-17-2019, 12:35 PM
Ghost Rider

^^^good to hear

don't thin there will be much help from here, don't think there are too many running the set up you have now, I'll I know is that car sounds fucking amazing!!

Have you taken an pics of the Mach lately?
10-18-2019, 12:23 AM
CHILL5.0

Ya I didn't think I'd hear too much on here but it is actually quite a popular engine management system.

Adjusted my throttle response today and got it pretty good now. Slowly getting my VE table dialled in driving it around each day I can. Car already feels 10x better than it did with the stock computer and SCT chip tuned by the fucktard out here. I enjoy driving it now, it feels how it should. Just wish I'd done this sooner.

No I haven't taken any pics of the Mach lately. It's under it's cover right now.

Ya my car sounds pretty good, can't complain... But my neighbours did a couple of weeks ago when I had just installed the new computer and was idling it in the garage at 9pm on a week day. Some lady came over and started yelling at me saying i woke her kids and that she doesn't want to call the cops but will if she has to. I kind of expected it, I know it's not quiet.
10-18-2019, 12:48 AM
Ghost Rider

Tell her to call the cops...curfew isn't till 11pm (at least in Ontario) I would think it's the same out there...all though who knows? Alberta has some weird shit out there LOL

Cool that the car is running better now though!!

on the previous note though...I try not to piss off the neighbours around here, sometimes makes life easier than fighting it... I wait till atleast the end of the driveway to turn the exhaust open!!
10-18-2019, 05:07 PM
CHILL5.0

As soon as she left I shut the car off a few minutes later. I don't want to piss off the neighbours. Car was idling for about an hour tho LOL. I don't have the option to turn my exhaust open and closed it's full time open AF. Gonna go take it for another rip while the weather is deadly here. Get in some more tuning.
10-18-2019, 08:13 PM
ttpinto

The more you drive with auto tune on the better it will run. I also datalog every time I drive it to see what its doing. You can also use it to help tune the ve table. Sounds like you are getting it dialed in. I run the megasquirt MS3X.
10-18-2019, 09:33 PM
CHILL5.0

Quote:

Originally Posted by ttpinto

The more you drive with auto tune on the better it will run. I also datalog every time I drive it to see what its doing. You can also use it to help tune the ve table. Sounds like you are getting it dialed in. I run the megasquirt MS3X.

I am using autotune each time I take her out. I have it set so that it doesn't adjust my VE table under 1200rpm and won't adjust till coolant temp reaches 160. I datalog as well however I can only view about 27 seconds of my log because I don't have the registered version of MegaLog Viewer. So much of my tweaks I've done so far have been real time just watching what is happening when it's happening.

I wanted to buy the Stinger PimpXS with MS3 as I liked the fact that it has sequential fuelling as opposed to batch fire but it seems to run pretty good... Even better than it did with the stock A9L with SCT chip. This PNP2 came up for sale brand new in box with everything for a really good price so I jumped on it. I know a few guys around here that run it and it does really well for them. I like being able to see everything that is happening and having full control over everything. Definitely a lot of stuff to learn and things that can be played with and adjusted. So far I love it!
10-21-2019, 05:34 PM
ttpinto

Ms3x or pro is great. I have it controlling so much of the car. Boost control, meth injection launch control and so much more. Its worth the extra cash.
10-22-2019, 09:07 AM
90GT

You guys are using Megasquirt, around my parts everyone preaches Holley.. is there a huge difference between the two? I was looking at the terminator X because i just have a 347 and plan on keeping it N/A. I was told the Megasquirt or Holley Dominator was overkill.. I wouldnt be using them to their full potential?
10-22-2019, 10:10 PM
CHILL5.0

It's not about using them to their full potential, sure there are a ton of different things you can do and control through them but the fact of the matter is at the end of the day your engine will purr when tuned up.

Holley and MegaSquirt are very similar. Some will argue that they prefer the Firmware of the MegaSquirt over Holley. Personal preference really. For me, many use the MegaSquirt around me so I've got guys I can go to for help. I know their cars run really good on them so that also kinda sold me. I also had a good deal come up that I couldn't pass on. In the short time that I've had the MSPNP2 in my car (3 weeks and about 8-10 hours behind wheel) the engine already runs better than it did on the A9L with SCT chip. Mind you the guy out here that tuned it didn't know what he was doing. The Ontario guys know what they are doing.

MegaSquirt is also much cheaper than Holley. I'm not sure about their new standalone plug n play that they just released but their other systems are very pricey.

I'm also running an NA 347 atm. On the shitty SCT tune it made 370 at the wheels. I do plan on boosting it in the future as it is built with good internals and the block is good for 1000 or so.

Another option to look at is the Stinger PimpXS standalone plug n play ECU. It features a factory style box/enclosure so it fits right in place of the stock A9L computer and it features MS3 Firmware which is a step above my MS2 Firmware in my MegaSquirt. So many things you can do, it's crazy. Plus it has sequential fuelling which is a plus for dialling in the idle. The MS2 Firmware is batch fire fuelling. Little harder to get the idle controlled nicely but I've gotta say mine is pretty damn awesome already.

One of the things I really like is the additional outputs. I run dual Contour fans on my rad and they are power thirsty mofo's. I wired them into my MegaSquirt separately so that I can control them separately through the MS2 Firmware. I have them come on 4 degrees apart from each other to minimize the mass amp draw during motor startup for a split second. (Over 100 amps on startup between both fan motors) Now my engine has never run a more consistent coolant temp.

I also love having full control in my hands and learning how it all works. So far I rate the MegaSquirt PNP2 a 10 out of 10. Did I mention that you can take your MAF out and throw it in the parts bin or sell it? The MegaSquirt utilizes its own built in MAP sensor that you run a vac line to. You can run your MAF in conjunction with the built in MAP but it's not necessary and I'm not using mine and it works great.
10-22-2019, 10:22 PM
CHILL5.0

Quote:

Originally Posted by ttpinto

Ms3x or pro is great. I have it controlling so much of the car. Boost control, meth injection launch control and so much more. Its worth the extra cash.

You can control all of that with the MSPNP2 as well. Right now all I have it controlling is my electric fans. Soon I will have it control my water pump too. I already have an ignition box with rev limiter and a 2 step module wired off my line lock button so I don't need to have my computer control all of that at this time. But I like that I could if I wanted or needed to. The MSPNP2 is more for beginners who like plug n play. Which I do. I don't feel like replacing my engine harness or sensors. I have no doubt that the MS3X is amazing, it can only be better than what I've got and I love what I've got so far.
10-23-2019, 05:39 PM
ttpinto

Quote:

Originally Posted by 90GT

You guys are using Megasquirt, around my parts everyone preaches Holley.. is there a huge difference between the two? I was looking at the terminator X because i just have a 347 and plan on keeping it N/A. I was told the Megasquirt or Holley Dominator was overkill.. I wouldnt be using them to their full potential?

I made my choice based on price. It was the most affordable on the market at the time. There was no terminator. It was around $850 us with the boost control solenoid, wires and some odds and ends. Its cheaper because I had to make my own harness. I have used Holley and Megasquirt and like them both, I have lots of I/O to control whatever I need to. More then the terminator. Holley is better supported locally for tuning if you don't plan on doing your own.