PO had no clue what mods have been done to this car.. Please help
02-26-2014, 11:10 AM
#41
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Join Date: Feb 2014
Posts: 23
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I am uncertain of how to differentiate between a regular O2 sensor and a wideband. Will I be able to gleen this from pulling them? I have tried following the wires from the O2 sensor that is downstream from the turbo.. I didn't see a controller.
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02-26-2014, 11:14 AM
#42
Because what's going to happen now is that you're going to install ANOTHER wideband in your car, then wire it to your Megasquirt... which is already clearly receiving a wideband signal from an existing wideband.
And that's just dumb.
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02-26-2014, 11:26 AM
#45
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I am thinking that someone else did the same thing at one point because my shuttling issue was still there. My shuttling issue is now non-existant with the fuel value I am running now.
Regarding the wideband, I will probably swap it out for the innovate, because I've heard great things about it. Also I can put another sweet gauge in my car. Because, you know. Gauges.
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02-26-2014, 11:51 AM
#47
I loaded the vanilla base map from Mega Squirt for that year miata.. Unfortunately fiddling with the req_fuel value was something I could not avoid doing (I think). I just loaded that map on there and started fiddling, praying to Miata Jesus that my car didn't blow up or pre-fire or.. something.
I am thinking that someone else did the same thing at one point because my shuttling issue was still there. My shuttling issue is now non-existant with the fuel value I am running now.
Regarding the wideband, I will probably swap it out for the innovate, because I've heard great things about it. Also I can put another sweet gauge in my car. Because, you know. Gauges.
I am thinking that someone else did the same thing at one point because my shuttling issue was still there. My shuttling issue is now non-existant with the fuel value I am running now.
Regarding the wideband, I will probably swap it out for the innovate, because I've heard great things about it. Also I can put another sweet gauge in my car. Because, you know. Gauges.
You could have sucked the old tune out of the megasquirt that likely had many of the variables and settings loaded correctly.
Can you post a screen shot of your o2 sensor settings page? Also, take a picture of your injectors and post that. We have asked for pictures several times here and I don't believe we have seen them.
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02-26-2014, 11:57 AM
#48
Re: required fuel
Only it appears it is not. It appears he loaded a NEW basemap. So all bets are off on everyfuckingthing.
Ok, so everything doesn't necessarily have to come out, but you need to know what ACTUAL parts you have. You don't know what injectors you have, you don't know if you have a narrowband or wideband o2 sensor, anything you might have suspected by looking at your old tune (the one that was running the car when you bought it) is moot because (it appears) you just wrote over it.
So now you are at square one blind with a turbo motor. Congratulations.
You don't have to rip everything out, but you damn well DO need to know what you have FOR CERTAIN.
Some 550cc injectors can be run directly into the megasquirt natively. Some injectors need what is called a "peak and hold" board. Some injectors that might have 550 on the injector might not actually be 550cc injectors but might just have those numbers in the part number. We don't even know if you have a megasquirt 1, 2, wither or not its a plug and play unit or if it is custom. We don't know if you are running sequential or batch. We don't know if you are running wasted spark... We don't know if you have a variable throttle position switch. If you have a non-pnp megasquirt, we don't know what wires are routed into what pins. (this matters).
So we know almost nothing, and just like a doctor, when you know nothing, you need to investigate and often times that includes looking at the parts themselves and not just changing medication, diet, other bullshit till something happens.
Right now you may be trying to milk a cat. Stop. Take pictures. Take screenshots. POST THEM AND HOST THEM HERE. My employer and other employers block instagram and other picture hosting services and like it or not, I check out this site on my breaks.
So now you are at square one blind with a turbo motor. Congratulations.
You don't have to rip everything out, but you damn well DO need to know what you have FOR CERTAIN.
Some 550cc injectors can be run directly into the megasquirt natively. Some injectors need what is called a "peak and hold" board. Some injectors that might have 550 on the injector might not actually be 550cc injectors but might just have those numbers in the part number. We don't even know if you have a megasquirt 1, 2, wither or not its a plug and play unit or if it is custom. We don't know if you are running sequential or batch. We don't know if you are running wasted spark... We don't know if you have a variable throttle position switch. If you have a non-pnp megasquirt, we don't know what wires are routed into what pins. (this matters).
So we know almost nothing, and just like a doctor, when you know nothing, you need to investigate and often times that includes looking at the parts themselves and not just changing medication, diet, other bullshit till something happens.
Right now you may be trying to milk a cat. Stop. Take pictures. Take screenshots. POST THEM AND HOST THEM HERE. My employer and other employers block instagram and other picture hosting services and like it or not, I check out this site on my breaks.
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02-26-2014, 07:37 PM
#49
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If you didn't know how to tune before, you sure will learn how to now. 
I'm going to go ahead and suggest what i suggested before and park the car until you get things figured out.
Why did you go ahead and buy a modded vehicle as a daily anyway? That's never a good idea, ever.
I'm going to go ahead and suggest what i suggested before and park the car until you get things figured out.
Why did you go ahead and buy a modded vehicle as a daily anyway? That's never a good idea, ever.
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02-26-2014, 07:46 PM
#50
OP, you really need to heed the advice given here, and stop tinkering before you blow it up for good. Please post some detailed pictures and listen to the advice! There is in incredible amount of knowledge here, and lots of it comes from experience. You aren't the first one to run across this situation, but if you keep playing with it you'll likely end up like many others before you, parting out the car within a few months of purchase.
Right now, it seems the injectors are the first critical step. Pull one and get the numbers, or post some close up pictures. Maybe it can be easily identified.
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02-28-2014, 02:35 PM
#52
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Join Date: Jan 2010
Location: Anderson, SC
Posts: 146
Total Cats: 9
So, it's been three pages, but I haven't checked through them.
Has he taken photos of anything yet? Or is he still in the "I'm not sure if I have a wideband or not, and I don't know how to tell, but pictures that might help others determine that for me will never happen, so I'm just going to install a new wideband and ask the same questions." phase?
Has he taken photos of anything yet? Or is he still in the "I'm not sure if I have a wideband or not, and I don't know how to tell, but pictures that might help others determine that for me will never happen, so I'm just going to install a new wideband and ask the same questions." phase?
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03-31-2014, 04:35 PM
#54
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Join Date: Apr 2010
Location: Murfreesboro, TN
Posts: 60
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It's up on Craigslist. I almost went and looked at this car. Had a trip come up, couldn't make it and ended up buying a buddy's car instead. It seemed a little sketch to me, but for the price I almost took a chance.
1997 TURBO MAZDA MIATA MX-5 Extremely FAST FS/FT
1997 TURBO MAZDA MIATA MX-5 Extremely FAST FS/FT
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03-31-2014, 04:39 PM
#55
It's up on Craigslist. I almost went and looked at this car. Had a trip come up, couldn't make it and ended up buying a buddy's car instead. It seemed a little sketch to me, but for the price I almost took a chance.
1997 TURBO MAZDA MIATA MX-5 Extremely FAST FS/FT
1997 TURBO MAZDA MIATA MX-5 Extremely FAST FS/FT
I also hate people who say they cant afford the speeding tickets with a particular car. You pay the same ticket for doing 90 in a 65 whether your driving a miata or a grand marque.
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