MAT Relocation, Mini Ram
Thread Starter
Team Owner
Joined: Oct 2004
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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
MAT Relocation, Mini Ram
OK, so the Mini Ram has no provision for the MAT, as does the Super Ram.
I spoke to TPIS and their suggestion is to relocate the MAT in front of the throttle body. I have the accordion style snorkel hose from the air filter box to the TB.
They comment was "just silicone it in.
Seems to me like a hack solution. I can have the MR drilled and tapped for the MAT.
Any suggestions on how to do this the RIGHT way? Is there any advantage to mounting it BEFORE the TB. Kinda seems if that were the right place, GM would have done that in the first place.
Thanks.
I spoke to TPIS and their suggestion is to relocate the MAT in front of the throttle body. I have the accordion style snorkel hose from the air filter box to the TB.
They comment was "just silicone it in.
Seems to me like a hack solution. I can have the MR drilled and tapped for the MAT.
Any suggestions on how to do this the RIGHT way? Is there any advantage to mounting it BEFORE the TB. Kinda seems if that were the right place, GM would have done that in the first place.
Thanks.
Team Owner
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From: SE NY
Cruise-In II Veteran
Why not just relocate the MAT into the side of the air filter lid?
Though your SD system uses intake air pressure & temp to determine mass air flow, the air temp at the filter is likely to be very close to that inside the plenum, IMO.
Though your SD system uses intake air pressure & temp to determine mass air flow, the air temp at the filter is likely to be very close to that inside the plenum, IMO.
Le Mans Master
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What is the MAT and where is it located on a stock '90? I think I will be upgrading to the mini ram in the near future.
Le Mans Master
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From: Tampa Florida
Safety Car
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From: Salem NH
If you turn the MAT (manifold air temp) into an iat (intake air temp) you need to make a calibration change in the prom.
Make sure you tell the tuner (TPIS in Jsups example) where you are putting the sensor.
I also changed mine to true IAT (application = any 3.1, 3.4 v6 car, an7 L03 fbody, any of the vortec 4.6, 5.7 trucks, etc) because it reads changes in air temp faster. (supercharger).
-- Joe
Make sure you tell the tuner (TPIS in Jsups example) where you are putting the sensor.
I also changed mine to true IAT (application = any 3.1, 3.4 v6 car, an7 L03 fbody, any of the vortec 4.6, 5.7 trucks, etc) because it reads changes in air temp faster. (supercharger).
-- Joe
Le Mans Master
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Drifting
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From: Hazel Park MI
You can get a relocation kit, with the sensor, grommet, and harness that just plugs right in. A 7/8 wood spade bit will make a nice clean hole in the plastic. Mine is right by the bend in the air filter housing before the snorkel
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Le Mans Master
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From: Akron Ohio
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I am running a K&N cone filter right on the end of my throttle body. Where would I put mine? Can I drill a hole in the end plate of the filter?
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Team Owner
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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
Their comment to me is "why would you want to suck in hot engine air"
They don't seem to be fans of it.
Le Mans Master
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From: Akron Ohio
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Well if you look on the inside of the hood there are two rails that seem to go along the underside of the hood bump (where the lights are mounted). In those rails there are cutouts for things like the radiator and alt bracket. this forms a tunnel from where the stock filter is right to the throttle body. I have a peice of sheet metal blocking the engine heat from coming up from the space between the rad and engine accessory pulleys. To my knowledge I am sucking cool air from the front of the car without having to go through all that wrinkle ducting...
Thread Starter
Team Owner
Joined: Oct 2004
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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
Well if you look on the inside of the hood there are two rails that seem to go along the underside of the hood bump (where the lights are mounted). In those rails there are cutouts for things like the radiator and alt bracket. this forms a tunnel from where the stock filter is right to the throttle body. I have a peice of sheet metal blocking the engine heat from coming up from the space between the rad and engine accessory pulleys. To my knowledge I am sucking cool air from the front of the car without having to go through all that wrinkle ducting...
Le Mans Master
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From: Akron Ohio
2025 Corvette of the Year Finalist - Modified
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Any thoughts on where to mount it? Where do you think yours is going?
Thread Starter
Team Owner
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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
I didn't mount mine, I am going to let them do it when they drop the engine in.
It is likely going to go in the air filter box where the snorkel attaches.
The relocation kit they sent me came with a new gromnet type sensor. If the right sized hole is drilled, the grommet just plugs into the plastic, done.
It is likely going to go in the air filter box where the snorkel attaches.
The relocation kit they sent me came with a new gromnet type sensor. If the right sized hole is drilled, the grommet just plugs into the plastic, done.
Drifting
Joined: Oct 2006
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From: Citrus Heights California
I think they're right. Most forum members think that cold air induction is junk. Air from outside the engine compartment can be a lot colder.
Drifting
Joined: Oct 2006
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From: Citrus Heights California
I didn't mount mine, I am going to let them do it when they drop the engine in.
It is likely going to go in the air filter box where the snorkel attaches.
The relocation kit they sent me came with a new gromnet type sensor. If the right sized hole is drilled, the grommet just plugs into the plastic, done.
It is likely going to go in the air filter box where the snorkel attaches.
The relocation kit they sent me came with a new gromnet type sensor. If the right sized hole is drilled, the grommet just plugs into the plastic, done.
Race Director
Joined: Jan 2008
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From: oregon
If you turn the MAT (manifold air temp) into an iat (intake air temp) you need to make a calibration change in the prom.
Make sure you tell the tuner (TPIS in Jsups example) where you are putting the sensor.
I also changed mine to true IAT (application = any 3.1, 3.4 v6 car, an7 L03 fbody, any of the vortec 4.6, 5.7 trucks, etc) because it reads changes in air temp faster. (supercharger).
-- Joe
Make sure you tell the tuner (TPIS in Jsups example) where you are putting the sensor.
I also changed mine to true IAT (application = any 3.1, 3.4 v6 car, an7 L03 fbody, any of the vortec 4.6, 5.7 trucks, etc) because it reads changes in air temp faster. (supercharger).
-- Joe
is this why motors seem choppy when cold if you do not alter the prom? i have been wondering this for the longest time. after 5 minutes of driving when underhood temps come up your fine, it's only the first few minutes. worse in winter. truth?
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From: Salem NH
-- Joe
Burning Brakes
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From: Athens Ohio
I have seen on this forum that on a MAF car the MAT sensor is only used in connection with the EGR system. I don't know if this is true or not. I remove the EGR on my car and am running a Miniram. I have the sensor strapped and laying on the top of the manifold. I have seen no adverse effect. No adverse effect after I supercharged either.
Le Mans Master
Joined: Feb 2005
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From: The Motor City
The sd (727/730 ecm) uses the input from the MAT for fueling changes based on temps. As Anesthes points out, changing it to read outside air temps will, and does change the fuel calculations based on the stock "look up" tables. (and backwards on top of that). Understanding what the MAT sensor is supposed to accomplish would help, as it iwas not designed to soley read the intake temp. as such. If it is not recalibrated your tune will change based on seasonal temps.