Megasquirt

[oldag98]

I ordered a Megasquirt controller about 2 weeks ago. I have been running a 420A with custom intake, Ford 65MM throttle body from Crown Vic, custom fuel rail, stock injectors, MSD coil and wires, new plugs, adjustable cam gears, new cam belt and mechanical tensioner. the engine is basically stock internally with just boltons. I received the Megasquirt last week and installed it yesterday. Before the install, I did a dyno pull and was making 175HP and 180ft/lbs torque. the dyno pull was up to 7500RPM, but the egine flatlines at 7000, meaning it did not gain any HP or TQ past 7K. I thought this a bit weak for this engine, even though it is double the output of the stock MG engine and even though I was crossing my fingers that the engine would not explode past 6000 RPM. After the rough install of the MS, the car would not start. Via Tunerstudio I set and adjusted settings and got it to fire and run. It ran very well with very conservative settings, smooth idle, good throttle response, no black/rich smoke. After basic adjustments to the cams (adv a bit) and to the Megasquirt inputs, the engine seemed to come to life more and more. At the end of the day, I ended up with 235HP, according to the DYNO and 246 FT/lbs of torque. I relaize that this is not much compared to others, but for the little MG Midget with the N/A 420A, I was astonished/shocked at the difference in the performance and very pleased that I could tailor many of the inputs with my wife's laptop. I have never seen another MG Midget with this type of tuneability. I mounted the MS box inside and on the top of the passenger footwell. I honestly can not explain how cool it feels to be able to tune a modern-ish engine in an old MG Midget with a laptop. I am hooked!

 

[LeeSD1]

At the end of the day, I ended up with 235HP, according to the DYNO and 246 FT/lbs of torque. I relaize that this is not much compared to others, but for the little MG Midget with the N/A 420A,

Not trying to burst your bubble but i find this hard to believe if the motor(420a) and still stock. Cant be a normal 420a then, no stock 420a will make that much power. Post the dyno sheet since it was on the dyno!

 

[dsmcrzy]

Sorry but I am calling BS on that 235. Bulletdsm has the high HP NA 420a and it's 220 ish. Congrats in the install and everything but could it be that the dyno is wrong? I know some tell you the HP is higher than it really is

 

[LeeSD1]

Yeahh mark bullet over on 2gnt is probably making one of the highest HP N/A 420a and only made 219hp with 175tq. Buddys dyno must deff be wrong then.

 

[jayson427]

yeah theres no way you could make 235hp with stock injectors and internals for sure. even 175 hp with bolt ons is wrong. if your using what megasquirt estimates what your hp is then its wrong since it isnt accurate. you need to get on a real car dyno for real numbers.

 

[oldag98]

This is not good news. I will post the dyno sheet asap. It might make sense that the dyno was wrong, because the Vette (a really non-stock one) that was run after mine showed over 700HP.

 

[bullettdsm]

This is not good news. I will post the dyno sheet asap. It might make sense that the dyno was wrong, because the Vette (a really non-stock was) that was run after mine showed over 700HP.

Yeah, there are actually settings that they could put in differently or just original settings could be bad.

I don't think there was any intent on your part to try and deceive the guys, but I'm believing they (the dyno guys) may have a calibration situation. So even posting up the dyno sheets, wouldn't help.

Now, I would LOVE for somebody to get up there in the 200whp range, so its not that I'm being defensive. Its just that with your set-up, its not capable of the numbers they said you got. This has been proven many times by quite a few people (including the Neon guys). While my 219.4whp on a Dyno Dynamics doesn't top the Neon guys 2.0, I do know that I am very close (though I still haven't used the Crane 28's, but I digress). Some things like the injectors alone can't even support 235whp.

Oh yeah, you gotta love that Megasquirt though!

 

[Slo2gen]

Regardless of what it made, using the dyno as it is meant, a tuning tool, you picked up a ton of power! So if no changes were made to the dyno settings before and after I would say MS did its thing and picked you up a good bit of power! Numbers do seem inflated but the before and after is what I'm stoked about!

 

[bullettdsm]

Regardless of what it made, using the dyno as it is meant, a tuning tool, you picked up a ton of power!

Agreed! Quick math puts you at roughly 33% increase in power! On just MS (provided the reason for the funny numbers is not exponential).

Like we've been saying, gotta love that MS.

 

[dsmcrzy]

Yea that is a good increase as stated.

OP did the tuner do your VE table and the spark table?

 

[oldag98]

Yes he did. He did not use Tunerstudio though, which is what I have on my laptop. I asked for a print out from his laptop, so I have the settings for mine. If I don't get this, I will write down the info and transfer to mine. I'll let you know asap.

 

[dsmcrzy]

Ok, just curious what your spark map looks like. Tunerstudio will autoroute the VE but the spark table I find is a little more complicated.

 

[bullettdsm]

Yes he did. He did not use Tunerstudio though, which is what I have on my laptop. I asked for a print out from his laptop, so I have the settings for mine. If I don't get this, I will write down the info and transfer to mine. I'll let you know asap.

All the info is stored on your MS ECU. So if you plug into the MS ecu with your laptop you can bring up that info.

 

[LeeSD1]

It would be awesome if the OP could post his TS Tune file for us to check out..I'd like to see that spark map