Megasquirt FAQ

Matt Cramer

Fresh Recruit
Tercel's are very similar to the starlets, if there's enough demand I'm happy to include some Tercel specific info. No - there's no significant differences between the EMS pro and an MS2 or DIYPNP. If anything I suspect the kits have better software and more accurate tuning capabilities. The EMS Pro is quite an old design now.
Correct, the eMS-Pro is an older, MS1 based system. The DIYPNP is MS2 based.

Sheldon said:
@ Fatman, can i use the preassembled one and ask them to add the Zeal Dual VR Conditioner daughterboard ?? as i said before i dont have much time to solder all components myself. i may have time on a weekend to fit it and maybe a week after to run it..
Yes. The directions for the Zeal Daughterboard show how to add it to an existing V3.0 (through hole) or V3.57 (surface mount) board. Even on the surface mount boards, you can just connect it to headers on the board so you don't have to deal with the SMD parts. Let me know if there's anything I can clear up in the directions to make them better.
 
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Matt Cramer

Fresh Recruit
your from diyautotune?
Yes, ran across this thread and some questions about our products, so I thought I'd answer them. The Zeal daughterboard is pretty new and I know I probably have a few confusing spots left in our directions for using it.
 

Sheldon

Malta Area Rep.
Yes, ran across this thread and some questions about our products, so I thought I'd answer them. The Zeal daughterboard is pretty new and I know I probably have a few confusing spots left in our directions for using it.
Great, :) will it be possible to order an ms-ii with the zeal daughterboard already fitted?

@Fatman - thats all i will need right? and use the msii extra code along with finding the right wires and plug it into our loom..
 

Fatman

Member +
@Fatman - thats all i will need right? and use the msii extra code along with finding the right wires and plug it into our loom..
Yep - that's all you'll need. Small mods required for boost control, nitrous etc if those are a requirement. I've just finished my two plug loom for my EP82 and will be testing it out tomorrow :) Wiring required is done, just needs to be tested and I need to do some further experimenting with the TPS.

Unfortunately for those of us with manual starlets, Toyota didn't see fit to include a TPS (throttle position sensor) that has a linear range of measurement across the entire range of motion of the pedal. Instead we've got an off and an on :p

This isn't the end of the world, when I was running MS on my Glanza I was running without a linear TPS and could tune adequately with just the map sensor. It is a bit of a pain and would be nice to solve so I'm going to write up a guide to converting the stock loom to run the linear TPS from an auto EP. Other compatible TPS can be found all over the place actually, many Toyota ones will fit.

Thanks a lot for your input Matt, appreciate the assistance.
 

Sheldon

Malta Area Rep.
Yep - that's all you'll need. Small mods required for boost control, nitrous etc if those are a requirement. I've just finished my two plug loom for my EP82 and will be testing it out tomorrow :) Wiring required is done, just needs to be tested and I need to do some further experimenting with the TPS.

Unfortunately for those of us with manual starlets, Toyota didn't see fit to include a TPS (throttle position sensor) that has a linear range of measurement across the entire range of motion of the pedal. Instead we've got an off and an on :p

This isn't the end of the world, when I was running MS on my Glanza I was running without a linear TPS and could tune adequately with just the map sensor. It is a bit of a pain and would be nice to solve so I'm going to write up a guide to converting the stock loom to run the linear TPS from an auto EP. Other compatible TPS can be found all over the place actually, many Toyota ones will fit.

Thanks a lot for your input Matt, appreciate the assistance.
Great bud. im sure it wont be easy to find and auto tps over here if any! if theres is any other tps that will fit our tb that would be great :)
 

finx

Member +
there will be one coming shortly i would say. got my ms2 today, so some more details will be added as we sort everything out.
 

Sheldon

Malta Area Rep.
there will be one coming shortly i would say. got my ms2 today, so some more details will be added as we sort everything out.
perfect :) just waiting for more info and will mail matt @ diyautotune to process the order.

1 question: if i was going to order the pcb 3.7(new one with smd board) its going to have some different pinouts... then its just a case where i need to match the pins right? fatman is going to upload a diagram for the pinouts on the MS to starlet loom right?

cheers
 

Fatman

Member +
Big update coming soon, progress temporarily halted as I finish putting in my other engine.

Wiring details are done for both EP82 and EP91, dual VR conditioner assembled, tested and working and getting a solid cranking RPM. Just need to fix my MS2 spark output :)
 

Fatman

Member +
perfect :) just waiting for more info and will mail matt @ diyautotune to process the order.

1 question: if i was going to order the pcb 3.7(new one with smd board) its going to have some different pinouts... then its just a case where i need to match the pins right? fatman is going to upload a diagram for the pinouts on the MS to starlet loom right?

cheers
I take it you mean 3.57? Yes, I'll be adding pinout diagrams.

If you're getting it prebuilt, why not go for a DIYPNP? Would certainly save you a lot of hassle...
 

Sheldon

Malta Area Rep.
I take it you mean 3.57? Yes, I'll be adding pinout diagrams.

If you're getting it prebuilt, why not go for a DIYPNP? Would certainly save you a lot of hassle...
yes 3.57 sorry for that. cos it has less fetures i think? and also, the MS2 can be used in another car while the PNP cant.. or at elast thats what i think.
 

Fatman

Member +
They share just about the entire feature set as far as I'm aware. You are right about portability though.

As a brief ETA my engine is back in the car and have done about half the plumbing and most of the wiring towards starting it again. Can't acheive much more on the MS until I have a car to run it on :D

The other thing you should REALLY be ordering is a wideband O2 sensor, I highly recommend the Innovate LC-1, as of this evening I actually have two of them! Wired directly into the MS this allows for some fantastic logging capabilities and automatically adjusting the map based on logged data is a great tuning tool.
 

Sheldon

Malta Area Rep.
They share just about the entire feature set as far as I'm aware. You are right about portability though.

As a brief ETA my engine is back in the car and have done about half the plumbing and most of the wiring towards starting it again. Can't acheive much more on the MS until I have a car to run it on :D

The other thing you should REALLY be ordering is a wideband O2 sensor, I highly recommend the Innovate LC-1, as of this evening I actually have two of them! Wired directly into the MS this allows for some fantastic logging capabilities and automatically adjusting the map based on logged data is a great tuning tool.
yes that is on the list too :) with the ECU
 

Sheldon

Malta Area Rep.
anyone wants to buy an auto TPS to go with the MS!? as i just paid for two and i didn't notice (well i paid more then other but this just looked perfect and other where dirty etc) and items are already in the post now so seller cannot refund me and send one :(
 

350ep70gr

Member +
anyone wants to buy an auto TPS to go with the MS!? as i just paid for two and i didn't notice (well i paid more then other but this just looked perfect and other where dirty etc) and items are already in the post now so seller cannot refund me and send one :(
I can think for someone...!!

Chris
 

Sheldon

Malta Area Rep.
anyone wants to buy an auto TPS to go with the MS!? as i just paid for two and i didn't notice (well i paid more then other but this just looked perfect and other where dirty etc) and items are already in the post now so seller cannot refund me and send one :(
GONE! lol

anyone needs one just PM me and i will search for one and give you the link :)
 
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