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-   -   Sooooo close, but I need YOUR help! Please? (https://www.miataturbo.net/megasquirt-18/sooooo-close-but-i-need-your-help-please-60950/)

astroboy 10-09-2011 05:44 PM

Sooooo close, but I need YOUR help! Please?
 
12 Attachment(s)
Specs: 90 chassis, ms1 (using megatune hires 10g), 94 bottom end, 99 head and tb, 1000cc id's, exhaustake, aeromotive fpr@50psi (currently not rising rate)

Got her started last weekend and she went to 3000rpm's immediately, unplugged the iacv (which wasn't being used on the previous setup which was stock 94 block with 90tb and bosch vtps) and she calmed down but I didn't let her run because she had not been broken in yet.

Today I went out and bumped the injector dead time down to 1.1ms and started her up. She ran for ~2 minutes then died. The 2 minutes was all surging/seeking. After she quit I checked for a vacuum leak (didn't find one) and couldn't get her to repeat the 2 terrible minutes of running.

Things I changed:
-bumped the id time down to 1.0
-took it out of mapdot and put it to tpsdot
-smoothed out the 1000rpm section of the fuel table
-cried as my excitement boner deflated

Lastly the only things wrong with the car is the tps reads all funny and iacv has not been set up/tuned (?), so I was in mapdot (which I changed after she stopped working) with it and the iacv unplugged.

The plugs are carbon covered and smell strongly of fuel.

The logs are in order and the map is how I ended the day. Also I was under the disillusion today was the 8th

If anybody could give some advice to get this show on the road I'd grrrreatly appreciate it.

astroboy 10-10-2011 10:32 AM

6 Attachment(s)
Double checked my injector dead time and decided it should be 1.1ms because I am at 50psi (1ms would be for 42psi) so I will be leaving it there.

I brought req fuel down to 2.9 (from 3.2) and was still seeing unburnt fuel on the plugs. I then brought ase down to see if that would change things any and it didn't. I'm going to try to bump the cranking pw's down till it won't start because maybe I'm flooding it when I crank? Anyway more logs in order of attempts.

wittyworks 10-10-2011 11:52 AM

When you go it started, what were the afrs you were seeing? Did you get the chance to set your base timing when it was started?

The order i have done things when doing a first start:

1. Get timing light all set up
2. Start Car (you might have to fiddle with those fuel settings again to get tit to start)
3. Get the idle afrs to around 13-14
4. SET BASE TIMIMG. Lock the timing to 10, then use the trigger angle to make sure your notch in the crank pulley is on 10 with the timing light.

The car will most likely run like crap without timing set.

240_to_miata 10-10-2011 12:13 PM

You free Wednesday or Thursday evening? Lets get this bitch going.

astroboy 10-10-2011 02:20 PM


Originally Posted by wittyworks (Post 781740)
When you got it started, what were the afrs you were seeing? Did you get the chance to set your base timing when it was started?

The order i have done things when doing a first start:

1. Get timing light all set up
2. Start Car (you might have to fiddle with those fuel settings again to get tit to start)
3. Get the idle afrs to around 13-14
4. SET BASE TIMIMG. Lock the timing to 10, then use the trigger angle to make sure your notch in the crank pulley is on 10 with the timing light.

The car will most likely run like crap without timing set.

When I first started it (ran for 2 minutes of fluctuating idle) I was getting ready to time it and it died (I had the timing set to 10, burned to ms, and had the gun in my hand when she quit). I have the timing light sitting on the head and all hooked up and if it does start and stay running again I will be much quicker to get the timing light on it.

According to the log the aft's were between 10.5:1 (when the idle dipped low around 800rpm's) and 21.6:1 (when the idle went high around 2500rpm's).


Originally Posted by 240_to_miata (Post 781759)
You free Wednesday or Thursday evening? Lets get this bitch going.

Definitely man! The help is most welcome so whichever day works for you I am game.

240_to_miata 10-10-2011 02:26 PM

Lets do wednesday. Ill head over after work.

BTW... I have bigger brakes than you!! :fawk::fawk::loser::loser:

astroboy 10-10-2011 02:48 PM


Originally Posted by 240_to_miata (Post 781821)
Lets do wednesday. Ill head over after work.

BTW... I have bigger brakes than you!! :fawk::fawk::loser::loser:

Sounds good man. Wirr have Brue Moon and pizza on tap.

Bigger brakes do both of us no good rite now:makeout:

240_to_miata 10-10-2011 02:56 PM

Pizza on tap? COOL

astroboy 10-10-2011 03:02 PM

Yeah, it is a big tap and it comes out pretty lumpy but tastes fantastic!

So if I were to hook the iacv back up, and if it runs at 3000rpm's, would setting the timing be ill advised? I feel as if it is not the best idea but I kinda wana do it...

240_to_miata 10-10-2011 03:14 PM

it may work. If itll keep you running long enough to get it timed I say do it. itll also be a lot easier with 2 people.

astroboy 10-10-2011 05:10 PM

It didn't work. Car went to 3500 rpm's and died, all the time lengths are about the same though (about 10 seconds) so maybe something is turning on/off and stopping the combustion cycle...

Also I think I killed the starter...it makes a loud grinding noise after a few revolutions and then the motor spins freely :(

240_to_miata 10-10-2011 07:57 PM

if it only runs for 10 secs or so and then dies that means your ASE's are the only reason its running. once they shut off it probably goes too lean. I still havent looked at your logs. too lazy to start up my computer.

Replace the starter so we can run wednesday! get a 99-00 one cause its smaller :)

astroboy 10-10-2011 08:46 PM

I think it will be tough to get a starter in a day but I'm going to try like hell.

240_to_miata 10-12-2011 09:45 PM

It runs.. but only on ASE. We make the ASE's a few minutes long to allow us to set the base timing. Timing is now set.

It dies the second ASE turns off. While in ASE it runs pig rich at 9.5:1
ASE is currently at
fixed then decay
Works below 120*F (max i could set it )
3 minutes long (so we could set the timing)
Fixed MAP is at 80 kpa

We obviously need to do some tuning. Id like to get it to atleast run closer to 13.5 -14:1 in ase, and then start making it run out of ASE

I am just so surprised how suddenly it dies. Martin can post the logs, but here is the video.

astroboy 10-12-2011 10:01 PM

14 Attachment(s)
I just got back from walking the dog lol

Here's the logs and the more or less tune.

240_to_miata 10-12-2011 10:06 PM

Thats not the latest msq. The latest is "timing set but not tuned 10-12-11" or something

astroboy 10-12-2011 10:09 PM

2 Attachment(s)
Here it is!

Which button do I push?

240_to_miata 10-12-2011 10:10 PM

haha i couldnt cut it out. its priceless

astroboy 10-12-2011 11:14 PM

Makes me sound so old and technologically inept :(

astroboy 10-13-2011 10:31 PM

Well the guys at diy think that req fuel should go up and ase's should go down...

240_to_miata 10-13-2011 10:37 PM

That makes sense... except for the fact that the ase's were only at like 7% and the car was still running. Its worth a shot tho.

240_to_miata 10-13-2011 10:39 PM

Hey I figured out something that definetly wasnt helping us. We were only changing the fixed map time period, never changed the TOTAL time... so essentially what we made it do is just suddenly turn off instead of decay

If we make it really slowly decay we might get a better idea of what we need to do elsewhere.

Make Fixed MAP like 3 seconds, and make ASE Total time LONG... like 2 minutes. Log it.

astroboy 10-13-2011 10:40 PM

Yeah, I have much doubt about that recommendation but who knows. Maybe they are onto something, on the other hand it may do nothing.

astroboy 10-13-2011 10:41 PM

I could do that tomorrow and post the goodness. Maybe afterwords try what DIY recommended and log that too.

240_to_miata 10-13-2011 10:49 PM

Just save all tunes with date and description

astroboy 10-14-2011 08:58 PM

Damnit all! The battery is still dead as fuck (charger somehow got flipped to 6v) so going to postpone the run to tomorrow. I am halving ase and bumping the req. fuel up by .1 because I really don't know how much I should be going up with it but it should go up.

astroboy 10-17-2011 10:58 AM

8 Attachment(s)
So the ase's have been halved, bumped req fuel up by .1 and ran it with a lengthened total time to 120 seconds and made the fixed time length to 30 seconds. Car ran and oscillated like a bipolar woman after the 30 seconds.

I thought I'd try taking the kpa down by half because it was cutting in half after the 30 seconds. She woudn't start. Then I put it at 70 (halfway in between the original value and the value it wouldn't run at). She went but everything remained the same.

I think I am going to have to jump into the fueling table even though the car isn't warmed up. Anybody have any input?

240_to_miata 10-17-2011 11:01 AM

Ill check it out on my netbook tonight.

astroboy 10-17-2011 11:10 AM

4 Attachment(s)
And then she stayed running.

Increased fuel did the trick, it is running lean as fuck if wb is correct (which I am not doubting) so much more tuning is needed but at least she doesn't die rite away. She also made it to 136 degrees :D

Braineack 10-17-2011 11:13 AM


Originally Posted by 240_to_miata (Post 783447)
Make Fixed MAP like 3 seconds, and make ASE Total time LONG... like 2 minutes. Log it.

I dont like this advice. ASE shouldn't last very long.

Fixed map isn't a great idea either, but it essentially locks your VE%, if you have a highly untuned table in that area this could lead to headaches trying to get your startup settings correct. I've seen plenty of fuel maps where users absolutely do not tune the area between 100-30kPa in your first two columns.

ASE should last maybe 30 seconds at the max, where your warmup should take you the rest of the way. You aim for low 13s while the motor is still below 160*F.

If you can only run while ASE is engaged, this suggests your fuel map is untuned or your req_fuel needs to be increased to inject more fuel altogether.

240_to_miata 10-17-2011 11:14 AM

Awesome. If she is still running lean as F(CK but the table still seems to be scaled nice, go ahead and bump up your req fuel a bit more. You shouldnt need to touch ASE's much. Maybe cranking

240_to_miata 10-17-2011 11:15 AM


Originally Posted by Braineack (Post 784572)
I dont like this advice. ASE shouldn't last very long.

Fixed map isn't a great idea either, but it essentially locks your VE%, if you have a highly untuned table in that area this could lead to headaches trying to get your startup settings correct. I've seen plenty of fuel maps where users absolutely do not tune the area between 100-30kPa in your first two columns.

ASE should last maybe 30 seconds at the max, where your warmup should take you the rest of the way. You aim for low 13s while the motor is still below 160*F.

If you can only run while ASE is engaged, this suggests your fuel map is untuned or your req_fuel needs to be increased to inject more fuel altogether.

This was to prove a point that it would run, scott. Now that he got it running he can dial it back to normal people ASEs

astroboy 10-17-2011 11:18 AM

2 Attachment(s)
So a slight adjstment and nothing changed but she did start at 140° and 150° so pretty happy rite meow.

astroboy 10-17-2011 11:24 AM

When I bump my required fuel up the idle also jumps up so I am going to leave it be for now. Gotta go put in time with the fam :P

I will be putting the ase's back to civil settings and, hopefully with some advice, try dialing her in so I can take her out for the maiden voyage.

So when I say lean the wd is going between pegged high (21.something) and ~16 which in my mind isn't ok. Perhaps I should leave req fuel alone and start working on the ve table...

240_to_miata 10-17-2011 11:25 AM

As long as you dont start going up really high to the point where you will have VE's well above 100 in boost. At that point you need to add more req fuel and re-scale.

DO NOT drive that sucker with it that lean

astroboy 10-17-2011 02:26 PM


Originally Posted by 240_to_miata (Post 784581)
As long as you dont start going up really high to the point where you will have VE's well above 100 in boost. At that point you need to add more req fuel and re-scale.

DO NOT drive that sucker with it that lean

I won't be driving it until I can get everything under some sort of control. As of present it is running but that is about it, I want to get it running correctly before I go any further.


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