jacob80

Awesome! Where do you get your wheels from? I'm unfamiliar with staged wheels. I wonder how well your turbo setup would work with the stock cam?

Wow, you're all ready for a built bottom end. I'm scared to see what this thing will put down now!

I believe my piping is 2.5" and fit perfectly through the holes that were previously passages for the cabin vents. Yes, I too am going back and TRYING! to do things right. Slowly but surely

Like I said, some things were wired wrong and I'm sure 12v+ somehow made its way there. Now that I think about it, my fuel pump was constantly running and the only reason I noticed smoke is because I looked up from my computer because I heard the fuel pump sound like it either was sucking dry or had too much pressure in front of it, seemd like it just halted. Once I looked up I saw smoke and I immediately switched the key off. Right now, I'm worried about my sensors and stock tach. If those are fine (which I HIGHLY doubt the tach is due to smoke coming from the dash) I shouldn't be too worried. Once again, do you think I've damaged any other EFI sensors, or is the relay board the only component damaged here? I already ordered another last night and it shipped today (as you probably know, Matt). Thanks!

Yeah, I've seen that wiring, it looks good! I would go that route but the relay board saves me from my novice mistakes, such as this. This is my very first megasquirt install and I've been messing with it for almost two years and I'm finally just getting everything right, well, not this of course! From here, I'm going to draw up my wiring diagram and make sure that it looks good. I guess I'll remove my tach and hope its not fried, but I'd be surprised if it wasn't. Smoke clearly means no good!

I definitely did foul up on my wiring on try #1 (which is when this happened). I noticed there were a couple of wires that got hot/warm as I felt them after I keyed off the switch. This is really all my fault as I got a little over confident and didn't draw up a wiring diagram and just "went at it." So yes, I have learned my lesson! I'm thinking that my tach got friend. I say this because I have run NO wiring on the driver side cabin area under the dash and I fixed some wiring up on the coil to get my tach to work, and as far as I'm concerned, I can forget about that! Like I said, I think the reason this all happened is because I wired the board wrong and screwed it up. Perhaps I'll pull the tach out and see if I can discover some melted stuff...errggg Right now, I'm working on drawing a wiring diagram so that I won't do this again.

If its definitely not the turbo I would consider A ) The head gasket B ) A warped head C ) Maybe you broke rings/ring lands/piston damage At this point, if you pull the head off you'll know. Been there, done that! Check your dip stick and radiator too, that could possibly give clues as to what is going on. You said its probably coolant, so my thought is that the only place that would show up is from a leaking head gasket or maybe you blew a valve seal? Good luck Phil, you should take a video of your findings!

Z31 does NOT bolt straight up, 280z and 280zx will.

Decisions, decisions.

Seems logical. My thought process is that if I ever were to consider an aftermarket cam, I would have one ground for my specific turbo and be done with it. I want to stretch this turbo as far as I can with the stock cam. I've done some thinking and now believe I may want to throw in a turbo-specific cam in the future to match my exhaust side (whatever that may be, I think its a .68 housing on the hot side). Like I said, 350hp reliably in a 2450lb S30 is plenty of power and satisfaction for me and I have no ambition of exceeding this number with this specific motor/car combination.

Just ordered a new relay board last night. That was a $100.00 mistake Anyways, the only thing I'm worried about now is whether or not I damaged my other sensors. The only thing that I saw smoke come from is A) The relay board and out of the dash defrost vent on the driver side (probably my tach, right? ) Should I be worried that I didn't see a couple sensors show up in megatune, or can I safely say that the connections on the relay board were simply not there after the circuit overheated? Thanks guys!

Yeah, but with a single cam trying to move all that air around all while swapping exhaust housings all willy nilly disregarding cam profile, its quite possible its the head gasket.

Yeah, I'm pretty sure I had some stuff switched around. I'm going back and redoing everything and making a wiring harness so that i KNOW everything is right. Grr..time for a new relay board!

Oops

I'm not familiar with twin scroll, but why not utilize its function? Wouldn't this equate too good high and low torque curves?

Thats a big turbine housing... I also think you're thinking of a twin scroll turbo, which I am assuming this is not.

And for the record, I am getting a signal from my tach

Eh, no biggie, just gotta fix it and move on. Car sounds phenomenal!

You are truly an inspiration to many. I am VERY impressed with what you've done here man, great job. You should be very proud of yourself!

Hey guys, I've been working on rewiring my megasquirt to clean things up, but I think I'm just shooting myself in the foot. I keyed on my new wiring and some smoke came from the main connector (DB37 I think?) but I'm not sure what melted (I haven't pulled it off or done anyheavy investigation). Following this, I realized I had a couple things wired incorrectly. I rewired and hooked things back up and no smoke but now my TPS, CLT and another sensor I can't remember off the top of my head are not showing up in megatune (zero'ed out/red gauges). Also, my megasquirt relay board was putting out a high frequency sound, I could barely hear it but it was there. What is this? Also, after rewiring, a small stream of smoke came out from my dash on the driver side as I was sitting in the driver seat. Did I just fry the tach? Ugh, what a pain. I'm pulling EVERYTHING apart again to investigate if I've caused serious damage. Thanks guys.

What is this I see?...

There are many possible ways to go about doing it, but for simplicity sake, why not just signal a relay via megasquirt? Before I began re-wiring my EFI, it was run off a stock trigger box via the radiator hose, but I had to pinch a metal wire between the radiator input neck and hose, causing A) a small leak and a nasty metal wire had to be run down to the box, and in the end looked fugly as hell and janky at that. All I need is some output to trigger 12v when the temp is at 180 and turn off 12v when the temp is at 190...seems easy but maybe not. Feel free to chime in, Matt. Thanks!!

Wait wait wait...I just ran a wire from a relay to the Fidle output thinking its going to switch my fan on/off...now this won't work? Ugh, I need help, and more detailed instructions as to how to approach this. It is a 5 pin relay, how do I make this work?

Well I did a bunch of wiring last night and I'm hoping it'll turn out looking clean like I want it to. My starter relay works though (YES)! I'll keep you guys posted. I'm hoping to have the entire car wired up by tonight assuming I don't run into any major road blocks.

Good find! Any rust? Frame tweaked? If not, I applaud you!