MegaSquirt II Successfully Running on 7M-GTE!!! (Lots of pics and walkthrough)
- Thread starter 87_7MGTE
- Start date
http://www.supramania.com/forums/showthread.php?t=17558
for all the guys wanting to go megasquirt, check that thread, the group by is up soon, but i may have to extend it cause i dont have enough orders yet.
for all the guys wanting to go megasquirt, check that thread, the group by is up soon, but i may have to extend it cause i dont have enough orders yet.
Did this last night (megastim, not complete yet..), should be done with the main board in 2 weeks.
Is it possible to get the MSII to work on a 7M-GE? Cause thats what I got and i dont want to go turbo :/
Kai said:
Yep. MSII doesn't care whether you have a turbo or not. It just needs to know manifold pressure, air temp, rpm, etc...
You don't want to go turbo??
rakkasan said:
exactly. plus, maft pro is still scaling the AFM input.
if you want to see what it can do, just download the software and poke around in it. its free too.
http://www.not2fast.com/megasquirt/mt/2.25/mt225_setup.exe
Dont particularly want to go turbo, for only 30bhp more and to have all the expense of paying out £2000 for a decent engine and box, hacking the loom to bits to make it work etc - too much hassle for such a small horsepower gain, not to mention being on a virtually shoestring budget. Personally, i'd rather supercharge the engine - lot simpler that way 
As for the fact that my engine uses a distributor - does the MSII unit not care about that? And would it use the Hall sensor as input instead of me having to get a crank pulley sensor?
As for the fact that my engine uses a distributor - does the MSII unit not care about that? And would it use the Hall sensor as input instead of me having to get a crank pulley sensor?
if your using the distributor, you just midify the pickup in the stock dizzy, and the turbo motor is alot more then a 30bhp gain, why the heel would you leave it bone stock. that n/a 7m with headers, intake, port work etc.. wont make 200rwhp. the stock 7mgte wit ha full 3in turbo back exhaust, a good manual boost controller, an air filter and a good clutch should lay down ~300rwhp. if you add fuel and an upgraded turbo/i/c etc.. your knocking on 400rwhp easily. dont look at stock for stock, since you wont be running it bone stock. an exhaust alone on the gte makes ~40more rwhp, whats it do to the ge, 5-7?
Owning a turbo car is loads of trouble - i've owned two before (Sierra RS Cosworth & an Escort RS Turbo - both UKDM).
The thing i hate is a) turbo lag b) reduced fuel economy c) way more expensive road tax d) way more expensive insurance.
I have an N/A specifically because its the cheapest Supra to run and insure, as well as having the benefit of no turbo lag.
Already had the car dynoed at 204bhp by Power Engineering - hasnt lost anything since it was made, in fact its *gained* 4 bhp just from the 2.5" exhaust and the K&N
Dont forget, i'm in the UK, and an '88 means no catalytic converter and i can have CO levels of upto 3.5%
The thing i hate is a) turbo lag b) reduced fuel economy c) way more expensive road tax d) way more expensive insurance.
I have an N/A specifically because its the cheapest Supra to run and insure, as well as having the benefit of no turbo lag.
Already had the car dynoed at 204bhp by Power Engineering - hasnt lost anything since it was made, in fact its *gained* 4 bhp just from the 2.5" exhaust and the K&N
Dont forget, i'm in the UK, and an '88 means no catalytic converter and i can have CO levels of upto 3.5%
That and theres nowhere to give it a blast - speed camera's have taken all the fun out of driving in London :cry:
Help? The 7m ISCV is a stepper motor, correct? So I only need to jumper s12c and js9? Not all the others, correct?
From megamanual:
22. Now you need to make a decision on the first 'optional' component: if you are going to use an IAC stepper motor with MegaSquirt-II, you must install a jumper from the hole marked S12C to the hole marked JS9 (+12C). These are on the bottom side of the board, on the DB9 side of the processor. DO NOT INSTALL THIS JUMPER FOR NON-MegaSquirt-II APPLICATIONS - IT WILL DESTROY THE PROCESSOR!!
If you are going to use a stepper style IAC (such as the GM IAC), you need to connect jumpers to bring the controller signals out to the DB37:
Connect (1A)JS0 (under the processor socket) to IAC1A (near the DB37 connector) - this brings out IAC1A on DB37 pin #25
Connect (1B)JS1 (under the processor socket) to IAC1B (near the DB37 connector) - this brings out IAC1B on DB37 pin #27
Connect (2A)JS2 (under the processor socket) to IAC2A (near the DB37 connector) - this brings out IAC2A on DB37 pin #29
Connect (2B)JS3 (under the processor socket) to IAC2B (near the DB37 connector) - this brings out IAC2B on DB37 pin #31
All the jumpers on the bottom are confusing me, do I have to do those?
From megamanual:
22. Now you need to make a decision on the first 'optional' component: if you are going to use an IAC stepper motor with MegaSquirt-II, you must install a jumper from the hole marked S12C to the hole marked JS9 (+12C). These are on the bottom side of the board, on the DB9 side of the processor. DO NOT INSTALL THIS JUMPER FOR NON-MegaSquirt-II APPLICATIONS - IT WILL DESTROY THE PROCESSOR!!
If you are going to use a stepper style IAC (such as the GM IAC), you need to connect jumpers to bring the controller signals out to the DB37:
Connect (1A)JS0 (under the processor socket) to IAC1A (near the DB37 connector) - this brings out IAC1A on DB37 pin #25
Connect (1B)JS1 (under the processor socket) to IAC1B (near the DB37 connector) - this brings out IAC1B on DB37 pin #27
Connect (2A)JS2 (under the processor socket) to IAC2A (near the DB37 connector) - this brings out IAC2A on DB37 pin #29
Connect (2B)JS3 (under the processor socket) to IAC2B (near the DB37 connector) - this brings out IAC2B on DB37 pin #31
All the jumpers on the bottom are confusing me, do I have to do those?
Doward said:
MSII doesn't have a wheel decoder. MS isn't reading the 36-1 wheel, the EDIS module is and sending a signal to MS. You could use a GE distributor.
Doward said:
MSII cant read from the stock CPS because it has 2 wheels, one 24 tooth wheel for crank position and one 2 tooth (i think) wheel for tdc position. MSII cant add these 2 things together, yet. MSI has a wheel decoder built into the msns-e firmware, so the stock CPS can work with this firmware, but its on old hardware.
87_7MGTE said:
more specifically
Ne signal is the 24 tooth signal. No missing teeth or anything
Ge1 and Ge2 are the TDC signals for Cylinder #1 and Cylinder #6 respectively.
damn brilliant if you ask me. they put the sync AND the ref signal in one.
24 tooth x 2 for 48 teeth per engine CYCLE. TDC event happen once per cycle (tdc for #1 and 36)