what map sensor and iat for speed density

[2GFWDbeast]

my goal is 500hp so question is what map sensor will i need for that and what iat am i going to need? I have a 1990 gsx

 

[viperlp01]

What tuning system are you going to use. If you are using dsmlink it is hard to beat there speed density deal they sell.

Also MAP sensors are rated in Bar(14.7 psi.) and most commonly seen in 3 bar(1 bar is atmospheric pressure and the other 2 bar put it at around 29psi), 3.3(34psi) bar, 4 bar(44psi). 5 bar(58 psi).

Easiest and cheapist IAT is a GM IAT found on about everything.

 

[snowborder714]

Keep in mind that bigger is not always better. If you don't plan to push your system past 25 psi, a 3 bar sensor would be ideal. The smaller the sensor, the better the resolution. You want to closely match your goal boost to what sensor you run.

 

[viperlp01]

Keep in mind that bigger is not always better. If you don't plan to push your system past 25 psi, a 3 bar sensor would be ideal. The smaller the sensor, the better the resolution. You want to closely match your goal boost to what sensor you run.

Very good advise and I will give you rep (since I never get any for being helpful in any thread.)..

 

[LiquidX]

Brian is correct. The larger rating the lower the resolution becomes. Just because you can run a 5bar doesn't mean you should run one. Get one that matches your max psi the closest rounding up. GM IAT is all you would need then. I wouldnt use the AEM MAP sensor personally either as IIRC is voltage signal is slightly lower than say Omnipower.

 

[oldman420]

Map sensor 3 bar
MSD P/N: MSD-2313
GM P/N: 12223861

IAT
MSD P/N: MSD-2320
GM P/N: 25036751

3/8 npt bung for iat
Summit P/N: SUM-220072

 

[2GFWDbeast]

i have all supporting modds for 500+hp thing is, i don't know how much boost im going to run to obtain that. There for not sure on what map sensor to get.

 

[LiquidX]

Well I would suggest a 4 bar personally as you will be roughly 30 psi from a larger turbo to hit that. That will also give you a bit more room as well as you are on E85 which you can push harder.

 

[2GFWDbeast]

ok thanks

 

[Killa_dsm]

Here is the package deal ecmlink is selling. I think its a great deal and should work for your needs. ECMTuning, Inc.

 

[snowborder714]

Brian is correct. The larger rating the lower the resolution becomes. Just because you can run a 5bar doesn't mean you should run one. Get one that matches your max psi the closest rounding up. GM IAT is all you would need then. I wouldnt use the AEM MAP sensor personally either as IIRC is voltage signal is slightly lower than say Omnipower.

The voltage on an AEM sensor is not 0-5v but instead .5-4.5v. Now, keeping in mind my previous statement about resolution, I personally run an AEM 5 bar on a small 16g pushing 20-25psi. Yep, I contradict my recommendation, but I have had no issues running my sensor, either from a voltage or resolution standpoint. The reason I wanted the sensor was the threaded housing so I can install into my intake manifold.

 

[2GFWDbeast]

ok thanks for all the info

 

[simple jake]

Sorry to thread jack, but can I use the ecmlink IAT and MAP sensors for speed density with ceddymods?

 

[snowborder714]

Yes, you can. Sensors are just sensors and not proprietary to one tuning solution.

 

[Moonlight GSX]

The voltage on an AEM sensor is not 0-5v but instead .5-4.5v. Now, keeping in mind my previous statement about resolution, I personally run an AEM 5 bar on a small 16g pushing 20-25psi. Yep, I contradict my recommendation, but I have had no issues running my sensor, either from a voltage or resolution standpoint. The reason I wanted the sensor was the threaded housing so I can install into my intake manifold.

You mentioned threading it into the IM, and I've seen pictures of you having it threaded into your manifold (clean). What about mounting to a JMF SMIM? They come with those four ports at the bottom, would it attach to just one of those among whatever else needs to be attached to those?

 

[snowborder714]

I'm not sure what threads are used for those ports, but if it's the same, then yes you can do it.

 

[LiquidX]

If you have a 1/8 NPT then it will fit. I'm sure you can find an adapter somewhere to have it mount up if the threading is different (assuming there is a threaded bung on the manifold).

 

[Moonlight GSX]

EXTREME PSI : Your #1 Source for In Stock Performance Parts

Well I won't be using the 5 bar only because I don't think I will go that high on psi, but will be using the 4 bar that comes with the SD kit from ECMtuning. The link above shows what the 4 ports are (with two added extras). I was curious as to if that was okay and then just mount it to the firewall like others have.

 

[snowborder714]

If you're using the 4 bar from ECMTuning, you'll have to mount it to the firewall. The sensor they include is not like the AEM sensor as it doesn't have a threaded body.

 

[LiquidX]

You will be getting the GM style MAP sensor

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You'll run a vacuum line to one of the hose barbs to the sensor. Keep it as short as possible .

 

[Moonlight GSX]

Awesome, thanks guys! (sorry for hijacking the thread)