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Old 11-17-2015, 08:38 PM   #5141
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Quote:
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You used the map sensor I'm looking at years ago on your adaptronic. Any issues ever? (besides the wrong pinout?)
FWIW, I'm using the identical-looking-but-sold-by-diyautotune-for-a-lot-more-money GM 3 bar sensor on my car, it's been working great. I've had it since June or so.

I have it wired to EXTMAP, no special conditioning, although I did need to add a +5 output to the db37 on my mslabs ms3.

--Ian
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Old 11-17-2015, 08:40 PM   #5142
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Is it a "GM Style" or is it an actual GM sensor.

When you're scoping the abs sensors for me could you do a basic voltage test. 0psi, vacuum, and then boost? If our suction is calibrated correctly I can tell if the sensor is good.

I need 5v out for the oil/fuel pressure anyways, might as well get a line run to the engine bay.
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Old 11-17-2015, 08:51 PM   #5143
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Is it a "GM Style" or is it an actual GM sensor.

When you're scoping the abs sensors for me could you do a basic voltage test. 0psi, vacuum, and then boost? If our suction is calibrated correctly I can tell if the sensor is good.

I need 5v out for the oil/fuel pressure anyways, might as well get a line run to the engine bay.
It's the one DIY auto tune sells. I think it's genuine GM, but I dunno, there are a lot of counterfeits out there.

MAP - GM style 3 Bar MAP Sensor DIYAutoTune.com

This is the calibration I use:



TK derived the custom calibration by hooking up all four sensors (builtin, GM, plus a couple of the mouser ones I bought for measuring back pressure) to the same line, data logging at various MAP values (mityvac is useful for this), and then massaging the data so that they line up. I don't know what the curve-fitting algorithm he used was.

--Ian
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Old 11-17-2015, 08:54 PM   #5144
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GM is 0v->1.1 5V->315.5

So close.
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Old 11-17-2015, 09:03 PM   #5145
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GM is 0v->1.1 5V->315.5

So close.
Nominally. They vary a bit. That's the calibration that DIY auto tune says to use on their site, but the custom one works better for my sensor.

--Ian
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Old 11-17-2015, 09:04 PM   #5146
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Hmm, interesting.
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Old 11-18-2015, 01:42 PM   #5147
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Star Spec ZII or 595rsr.

I'm leaning toward the rsr because its a $150 cheaper. But at the same time I really liked the z1 star specs when I had them.

I'm hung up.

I know turbofan will say 595RS-R and curly will say z2's.

Will the z2's last 32% longer than the 595s?
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Old 11-18-2015, 02:21 PM   #5148
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rs3 or rival
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Old 11-18-2015, 02:24 PM   #5149
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I dislike the RS3 availability. I will get some of those when I get 15x9s.

I only see rival s in 15". I thought those wore like crazy.
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Old 11-18-2015, 02:34 PM   #5150
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I dislike the RS3 availability. I will get some of those when I get 15x9s.

I only see rival s in 15". I thought those wore like crazy.
Are you looking for 14s? Yes they wear quick, we got maybe a season out of ours. The xs lasted almost 2.5 seasons with a shitty alignment and were only a second slower on a 1:15 course.
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Old 11-18-2015, 02:37 PM   #5151
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Are you looking for 14s?
I was looking for rival non s.

I want more than a season.
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Old 11-18-2015, 02:43 PM   #5152
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I was talking about the non S, I have 0 experience with the S.

What size tire are you looking for?

I think the forum consensus is the 595 in any case.
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Old 11-18-2015, 02:44 PM   #5153
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Old 11-18-2015, 02:54 PM   #5154
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RR

--Ian
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Old 11-18-2015, 02:59 PM   #5155
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Not sure what to tell you, I have non-S 15s and I bought them from tire rack...

Maybe with the release of the S, they discontinued the non S in track fitments?
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Old 11-18-2015, 03:33 PM   #5156
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Maybe with the release of the S, they discontinued the non S in track fitments?
I think this is the case. It's the "S", or nothing.

FWIW - I have a set of "gently-used" 225/45-15 Rival's (non-S) on 15x8 Konig's that I'll let go for a song (to finance some 15x9's next year). They were only used on the street
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Old 11-18-2015, 04:12 PM   #5157
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PM me. But probably not, unless they are the same price as new tires.
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Old 11-19-2015, 01:05 AM   #5158
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Old 11-19-2015, 01:32 AM   #5159
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I positively despise the second one. The first one is super ricey but also kinda cool in a way, how it turns down.
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Old 11-19-2015, 01:35 AM   #5160
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Haha. The second one is just like my current one.
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