1994 mega squirt vs tweecer

Tfownes

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Apr 5, 2018
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#1
Hey I’m having trouble finding anyone that will tune my stock computer so was thinking about going the mega squirt or tweecer direction. I was just wondering for someone with mild mods like injectors, cam, intakes, throttle body, MAF, what would be a good platform to use. Also at the moment my stock computer has some sort of chip that was installed at steeda I believe. Is this something I could tune or I should stick with? I’ll post a picture of the chip any help would be great thanks.
F50EE344-5197-4AC1-9ACB-DF69351810BD.jpeg
D4DBBE93-ADDC-4EDC-9FCE-BD3EC782DC8F.jpeg
 

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Tfownes

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#2
also the cam was installed by the previous owner and I have no idea what cam it is will this matter?
 

a91what

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#3
No it wont, if the car runs ok no reason to mess with it. Tuning the stock ECU is not that difficult and there is a ton of info over on eectuning
 

Tfownes

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#5
The car runs super lean right now, completely off the wide band gauge i installed. The previous owner installed a cam and never tuned it i believe everything else i got off a different engine that was parted out. So with the different cam then the engine had when it was tuned in this engine is why im running so lean i believe.
 

a91what

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#6
yup sounds like you need to tune it, now its mostly just getting the MAF transfer function correct. you cannot change the injectors or MAF without making sure they are matched for the ECU.
What is the combo?
 

Tfownes

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#7
It’s a proflow MAF that’s calibrated for the 24lbs injectors 7C2BE35F-7092-4B8F-9C2D-11622CBF985D.jpeg
 

Tfownes

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#9
All I've done is let it idle and it goes so lean the gauge stops reading was too afraid to drive it
 

a91what

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#10
were you driving it before you hooked the gauge up?? what wideband are you using?
 

Tfownes

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#11
No I changed everything and installed an AEM wideband at the same time thinking I'd need one if i needed to get it tuned. Called around and no one will tune the factory computer they either don't deal with stuff that old or they don't tune 94/95s, so now I'm looking at my options for either tuning it myself or chnaging the computer so someone will do it.
 

a91what

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#12
you do have 24lb injectors correct? sorry for the lame questions just trying to narrow things down a bit
 

Tfownes

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#13
Yes they are the blue tops. Everything came off my brothers engine which ran great with this computer I think just the different cam has messed things up. He had a B303 cam I believe and I'm not sure what is in this engine.
 

Tfownes

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#15
Okay I will tomorrow. So the tune isn't on the chip? what is the chip for then?
 

a91what

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#16
The tune is on the chip, if the tune is for a different ECU or if it was burned for different maf/injectors you cannot use it
 

Tfownes

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#17
Oh okay well I got it all from my brother so I know its all the stuff that came out of his car. The wire coming out of the chip has 7 settings I'll call steeda tomorrow and ask what number the tune should be on i would assume 1 but who knows.
 
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#18
A lot of the chips have multiple settings, so you can have more than one tune on a single chip. This means you could have a street tune, race tune, valet tune, etc.
 

Tfownes

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#19
Okay so the SCT chip isn’t going to be much help to me so I was thinking sell it and go megasquirt? Anyone have any opinions on megasquirt vs tweecer? Is a full stand alone like megasquirt overkill unless I’m going turbo or something?
 

a91what

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#20
I have alot of them... the main thing here is how much time do you have to invest yourself into learning to tune a car on your own?