Fast reacting IAT sensor replaces stock sensor - Page 5

***TitaniumTT*** · 09-20-2009, 09:59 PM

I'm in....... for two actually. However, I have two concerns.

1) I'm running a Motec and need to know the calibration "scales" if you will. Is this a standard Bosch type sensor or what other details can you provide for me.

2) I'd be using it pre-intercooler to monitor charge temps, what is the max temp these can endure. We were afraid about melting plastic so we decided to use a coolant temp probe at first, as you can imagine, the response is abysmal. The datalogs show temp increases when in decel

dudemaaan · 09-21-2009, 02:36 AM

I'll try to answer the questions as best I can, and if need be I can do some testing to help fully answer them.

I'm not familiar with motec and the calibrations used. If it helps, the calibrations would be exactly the same as the stock FD iat sensor. I did list the resistance values at 20*c and 80*c earlier in the thread I don't know if that tells you anything or not but here they are.

Tested @68 *F (20c) = 2.27 Ohms
Tested @176*F (80c) = 0.34 Ohms

Given the information in those tests I don't think the temperature will accurately read past 200*F because the resistance will have reached 0 ohms. I think the probe can handle higher temperatures but just don't have the resolution needed to go that high.

The sensor is made by sagem for triumph motorcycles, it does uses a common bosch connector, but I'm not sure if bosch makes any identical sensors or not. I couldn't find any.

What are your pre intercooler temps? I know turbo's are capable of outlet temps over 300*F, but if yours are under 200* F it would probably work fine. Otherwise maybe a fast reacting EGT type probe would work, I'm not sure how accurate they are at temperatures that low is the only issue. Let me know if you have more questions I can help with.

FC3S Murray · 09-22-2009, 12:30 PM

Sensor works GREAT! Easy install and man does it live up to it's name. The sensor after a good heat soak @ 45*C dropped to 36*C in a matter of 45 seconds of driving and by 2 minutes it was back down to 27*C.

Makes tuning my Air Temp-to-Fuel Inj table so much easier.

dudemaaan · 09-22-2009, 12:47 PM

Great! Glad more people are getting these hooked up, it really is a must have IMO. Did you mount it in the stock location?

Signal 2 · 09-22-2009, 08:22 PM

I just scanned this thread from the beginning so I might have missed it, but how will the open element style sensors perform long term? Especially with an FD that typically has varying amounts of oil blow-by in the intake tract.
My OEM IAT is already relocated and easy to access, so if it's just a matter of using some contact cleaner on it periodically, then it wouldn't be a big deal. But still curious and maybe something others should consider who still have it in the stock location.

dudemaaan · 09-22-2009, 09:18 PM

The sensing probe has a protective coating over it so oil residue or methanol etc shoudn't have any effect on it. The only thing that could ever be issue is if something sharp or hard like a rock hit the probe, but in that case you would have much bigger issues then the sensor.

***TitaniumTT*** · 09-23-2009, 01:45 AM

Quote:

Originally Posted by dudemaaan

The only thing that could ever be issue is if something sharp or hard like a rock hit the probe, but in that case you would have much bigger issues then the sensor.

Thanks for the quick response. I'm going to call Motec and see if they have a calibration table for it and what they expect the thing to live up to as far as temps. Thanks again.

Garfinkles Motor Works · 09-23-2009, 04:40 AM

I pulled my sensor out and clocked it so the moving air will be directed through the cage. Every detail helps. Thanks Dude for the research time.

dudemaaan · 09-23-2009, 05:04 AM

No problem. Did you notice any difference in reaction time after rotating it a bit?

Garfinkles Motor Works · 09-23-2009, 07:39 PM

I will drive it to the crusein Friday if it does not rain,I will see then .

dudemaaan · 10-04-2009, 11:20 AM

FearNoPiston posted a video on the other forum of him boosting with the new sensor installed, It's kinda blurry but you can get an idea of how fast the sensor reacts. The last number is IAT's. It starts at 36*c and drops to 30*c in 6 seconds and holds steady.

http://www.youtube.com/watch?v=qaLkVyZlNDw

Gomez · 10-11-2009, 05:44 PM

Jeezuz Brent, seems the Aussies on FDRX7.com have taken to your sensor!!

Got any left??!!

dudemaaan · 10-11-2009, 06:29 PM

haha yeah still have a few over here. no one has sent a payment yet, but they do seem to be interested. That's good though, they really make a big difference in keeping an eye on air temps. Everyone should have 1!

HDP · 10-14-2009, 11:46 AM

Quote:

Originally Posted by dudemaaan

haha yeah still have a few over here. no one has sent a payment yet, but they do seem to be interested. That's good though, they really make a big difference in keeping an eye on air temps. Everyone should have 1!

I'm still waiting on the info you were getting on the connectors...

dudemaaan · 10-14-2009, 12:57 PM

Quote:

Originally Posted by HDP

I'm still waiting on the info you were getting on the connectors...

Well I did find something very interesting. The connector from a Greddy Boost control solenoid fit's perfectly in the stock connector. If we can source those connectors then a pigtail could be made that plugs right in. Alternatively It looks like a small terminal blade connector, or computer pin could be pushed into the stock connector. Something like this. (red)

09-20-2009, 09:59 PM	#61
*TitaniumTT* Test Whore - Admin Join Date: Mar 2008 Location: Right Behind you son Posts: 4,581 Rep Power: 10	I'm in....... for two actually. However, I have two concerns. 1) I'm running a Motec and need to know the calibration "scales" if you will. Is this a standard Bosch type sensor or what other details can you provide for me. 2) I'd be using it pre-intercooler to monitor charge temps, what is the max temp these can endure. We were afraid about melting plastic so we decided to use a coolant temp probe at first, as you can imagine, the response is abysmal. The datalogs show temp increases when in decel __________________ -The Angry Stig- DGRR 2009, 2011, 2012 & 2013 - Best FC DEALS GAP!! WOOHOOOO!!!!! 2015 Audi S4 - Samantha - Zero Brap S4 2004 RX8 - Jocelyn - 196rwhp, 19mpg fuel to noise converter 2000 Jeep Cherokee Sport - Wifey mobile - Now with 2.5" OME lift and 30" BFG AT KO's! So it begins 1998 Jeep Cherokee - 5 spd, 4" lift, 33" BFG's - Rotary Tow Vehicle 1988 'Vert - In progress 1988 FC Coupe - Gretchen -The attention whore BEAST! I'm a sick individual, what's wrong with you? I'm pure Evil I'm still insane, in the best possible way. I think Brian's idea of romance is using lube. Your rage caused the meteor strike in Russia. The Antichrist would be proud of his minion. You win with your thread. Most everything It's a truck with a steel gate on the back. Just a statement of fact Motec M820, AIM dash, ported 13B-RE Cosmo, 6-spd trans, 4.3 Torsen, custom twin wg fully divided mani, Custom 4" split into 2x 3" exhaust, Custom HMIC, Custom custom custom custom I like to welder stuff.... No Bolt-ons allowed. Dyno'ed @ Speed1 Tuned by me - 405rwhp on WG.... WM50 cuming soon. *-Angry Motherfcker Mode ENGAGED-**

09-21-2009, 02:36 AM	#62
dudemaaan Rotary Fanatic Join Date: Mar 2008 Location: Brenham, TX Posts: 335 Rep Power: 18	I'll try to answer the questions as best I can, and if need be I can do some testing to help fully answer them. I'm not familiar with motec and the calibrations used. If it helps, the calibrations would be exactly the same as the stock FD iat sensor. I did list the resistance values at 20c and 80c earlier in the thread I don't know if that tells you anything or not but here they are. Tested @68 F (20c) = 2.27 Ohms Tested @176F (80c) = 0.34 Ohms Given the information in those tests I don't think the temperature will accurately read past 200F because the resistance will have reached 0 ohms. I think the probe can handle higher temperatures but just don't have the resolution needed to go that high. The sensor is made by sagem for triumph motorcycles, it does uses a common bosch connector, but I'm not sure if bosch makes any identical sensors or not. I couldn't find any. What are your pre intercooler temps? I know turbo's are capable of outlet temps over 300F, but if yours are under 200* F it would probably work fine. Otherwise maybe a fast reacting EGT type probe would work, I'm not sure how accurate they are at temperatures that low is the only issue. Let me know if you have more questions I can help with. __________________ 500+ HP thanks to: Fast reacting IAT sensor thread! Mechanical Pre-turbo Water Injection Thread Dual Stock fuel pumps Thread T2 differential swap!

09-22-2009, 12:30 PM	#63
FC3S Murray frustrated! Join Date: Apr 2009 Location: Montana Posts: 611 Rep Power: 17	Sensor works GREAT! Easy install and man does it live up to it's name. The sensor after a good heat soak @ 45C dropped to 36C in a matter of 45 seconds of driving and by 2 minutes it was back down to 27*C. Makes tuning my Air Temp-to-Fuel Inj table so much easier. __________________ Same pig, new soul

09-22-2009, 12:47 PM	#64
dudemaaan Rotary Fanatic Join Date: Mar 2008 Location: Brenham, TX Posts: 335 Rep Power: 18	Great! Glad more people are getting these hooked up, it really is a must have IMO. Did you mount it in the stock location? __________________ 500+ HP thanks to: Fast reacting IAT sensor thread! Mechanical Pre-turbo Water Injection Thread Dual Stock fuel pumps Thread T2 differential swap!

09-22-2009, 08:22 PM	#65
Signal 2 Viable Fossil Join Date: Mar 2008 Location: Mid-West Posts: 199 Rep Power: 18	I just scanned this thread from the beginning so I might have missed it, but how will the open element style sensors perform long term? Especially with an FD that typically has varying amounts of oil blow-by in the intake tract. My OEM IAT is already relocated and easy to access, so if it's just a matter of using some contact cleaner on it periodically, then it wouldn't be a big deal. But still curious and maybe something others should consider who still have it in the stock location. __________________ Jim VR R1 FD Last edited by Signal 2; 09-22-2009 at 08:28 PM.

09-22-2009, 09:18 PM	#66
dudemaaan Rotary Fanatic Join Date: Mar 2008 Location: Brenham, TX Posts: 335 Rep Power: 18	The sensing probe has a protective coating over it so oil residue or methanol etc shoudn't have any effect on it. The only thing that could ever be issue is if something sharp or hard like a rock hit the probe, but in that case you would have much bigger issues then the sensor. __________________ 500+ HP thanks to: Fast reacting IAT sensor thread! Mechanical Pre-turbo Water Injection Thread Dual Stock fuel pumps Thread T2 differential swap!

09-23-2009, 04:40 AM	#68
Garfinkles Motor Works RCC Contributor Join Date: Mar 2008 Posts: 535 Rep Power: 18	I pulled my sensor out and clocked it so the moving air will be directed through the cage. Every detail helps. Thanks Dude for the research time.

09-23-2009, 05:04 AM	#69
dudemaaan Rotary Fanatic Join Date: Mar 2008 Location: Brenham, TX Posts: 335 Rep Power: 18	No problem. Did you notice any difference in reaction time after rotating it a bit? __________________ 500+ HP thanks to: Fast reacting IAT sensor thread! Mechanical Pre-turbo Water Injection Thread Dual Stock fuel pumps Thread T2 differential swap!

09-23-2009, 07:39 PM	#70
Garfinkles Motor Works RCC Contributor Join Date: Mar 2008 Posts: 535 Rep Power: 18	I will drive it to the crusein Friday if it does not rain,I will see then .

10-04-2009, 11:20 AM	#71
dudemaaan Rotary Fanatic Join Date: Mar 2008 Location: Brenham, TX Posts: 335 Rep Power: 18	FearNoPiston posted a video on the other forum of him boosting with the new sensor installed, It's kinda blurry but you can get an idea of how fast the sensor reacts. The last number is IAT's. It starts at 36c and drops to 30c in 6 seconds and holds steady. http://www.youtube.com/watch?v=qaLkVyZlNDw __________________ 500+ HP thanks to: Fast reacting IAT sensor thread! Mechanical Pre-turbo Water Injection Thread Dual Stock fuel pumps Thread T2 differential swap!

10-11-2009, 05:44 PM	#72
Gomez 2001 RX-7 RZ Join Date: Sep 2008 Location: Melbourne, Australia. Posts: 31 Rep Power: 0	Jeezuz Brent, seems the Aussies on FDRX7.com have taken to your sensor!! Got any left??!! __________________

10-11-2009, 06:29 PM	#73
dudemaaan Rotary Fanatic Join Date: Mar 2008 Location: Brenham, TX Posts: 335 Rep Power: 18	haha yeah still have a few over here. no one has sent a payment yet, but they do seem to be interested. That's good though, they really make a big difference in keeping an eye on air temps. Everyone should have 1! __________________ 500+ HP thanks to: Fast reacting IAT sensor thread! Mechanical Pre-turbo Water Injection Thread Dual Stock fuel pumps Thread T2 differential swap!