914 megasquirt info- Scott's 1.7 Options

[Scott-thundercat]

hey, just bought a megasquirt complete kit from DIYautotune. saw a few good threads about em with 914's on here. any other suggestions? i have a stock 1.7 liter. reason i bought it is that my fuel trigger points went out, so 195 vs 145 it wasnt a tough decision since i've been wanting to build one for a few years now.

anyhow any help or tuning tables would be appreciated! i saw the 2 liter tuning tables. anything for a 1.7?

[toon1]

thanks for all the input guys! so far i am on step 50- just started tonight. built the stim first- then started on the megasquirt. all the tests have come back A okay- good stuff! i'm just going to trigger off the coil- so i guess i can leave the VR circuit out? i will for now- and worst comes to worst will install it later. this thing is pretty fun to build! my soldering iron has made it a bit difficult as it is one of the "gun type" so the tip is too bulky for my needs and i keep touching the board- no real damage though. any how- if anyone else has any info- please post up! please post some pics of the TPS sensor! thanks guys!

hmmmm. so i have a hall sensor- but i am going to be triggering off the coil for now (one thing at a time- i'll do ignition timing later), so i guess i assemble if for off the coil triggering- and then later i can go back and remove the components i need to to control ignition timing when i get brave?

Hey Scott, build thew board with every componenet, do not OMIT anything because you are not using it. I think the hall sensor input and triggering off the dizzy points (not the stock FI trigger points) to drive the coil for timing are the same circut. they are both sqare wave signals. It explaines in the MS assembly.

If you decide to use something later, it will be there , all you have to do is make a couple jumpers and your set.

I put everything in mine, even the coil driver. I'm not using it right now but it's there, a couple jumpers and I have spark control.


BTW.... when you get to the step of installing the TIP transistors, it's going to be a PITA with a solder gun. It was hard enough tih a small iron.

[yarin]

thanks for all the input guys! so far i am on step 50- just started tonight. built the stim first- then started on the megasquirt. all the tests have come back A okay- good stuff! i'm just going to trigger off the coil- so i guess i can leave the VR circuit out? i will for now- and worst comes to worst will install it later. this thing is pretty fun to build! my soldering iron has made it a bit difficult as it is one of the "gun type" so the tip is too bulky for my needs and i keep touching the board- no real damage though. any how- if anyone else has any info- please post up! please post some pics of the TPS sensor! thanks guys!

hmmmm. so i have a hall sensor- but i am going to be triggering off the coil for now (one thing at a time- i'll do ignition timing later), so i guess i assemble if for off the coil triggering- and then later i can go back and remove the components i need to to control ignition timing when i get brave?

Hey Scott, build thew board with every componenet, do not OMIT anything because you are not using it. I think the hall sensor input and triggering off the dizzy points (not the stock FI trigger points) to drive the coil for timing are the same circut. they are both sqare wave signals. It explaines in the MS assembly.

If you decide to use something later, it will be there , all you have to do is make a couple jumpers and your set.

I put everything in mine, even the coil driver. I'm not using it right now but it's there, a couple jumpers and I have spark control.


BTW.... when you get to the step of installing the TIP transistors, it's going to be a PITA with a solder gun. It was hard enough tih a small iron.

Agreed.. I built every option in to mine.

Here is a pic of my $10 junkyard mazda TPS and adapter plate I machined.

(IMG:http://farm1.static.flickr.com/53/193061236_8649d5f42e_o.jpg)