[mullens]

The results are in. I did 5 minute data logs on the NAPA 180 and then the new Reische 170 thermostats. Conditions were similar, approx. 100 deg ambient temp and 7% humidity. I recorded the data in all kinds of driving (freeway, idling, suface streets). Fans were set for 188/198 for the NAPA and 182/188 for the Reische.

NAPA
Low IAT: 110
High IAT: 128
Average IAT: 119

Low ECT: 184
High ECT: 192
Avg. ECT: 188

Reische
Low IAT:98
High IAT:106
Avg IAT: 102

Low ECT: 176
High ECT: 182
Avg ECT: 179


Conclusion:
The Reische thermostat works as advertised. Average drop in ECT of 9* in the HOT So. Nevada weather is impressive. I would recommend this mod to anyone.

Joe

This post has been edited by mullens: 10 September 2009 - 10:00 AM

[mrfarmdog]

So where do you get one?

[mullens]

mrfarmdog, on Sep 10 2009, 11:05 AM, said:

So where do you get one?

Reische or Lethal.

This post has been edited by mullens: 10 September 2009 - 10:08 AM

[jared@lethal]

mullens, on Sep 10 2009, 02:07 PM, said:

Reische or Lethal.

As of Tuesday we're the exclusive distributor for all of Reische Performance's thermostats. We'll be handling the distribution for him from here on out so if you'd like to order one please feel free to give us a call.

We look forward to assisting you.

Thanks, Jared

[Joker45]

Good info. Thanks for sharing it with us.

[Secondo]

Joker45, on Sep 10 2009, 02:27 PM, said:

Good info. Thanks for sharing it with us.

+1 thanks for the work to get the data for us curious GT500 owners

[MY500SS]

Nice work Joe, thanks.

[jared@lethal]

mullens, on Sep 10 2009, 01:59 PM, said:

The results are in. I did 5 minute data logs on the NAPA 180 and then the new Reische 170 thermostats. Conditions were similar, approx. 100 deg ambient temp and 7% humidity. I recorded the data in all kinds of driving (freeway, idling, suface streets). Fans were set for 188/198 for the NAPA and 182/188 for the Reische.

NAPA
Low IAT: 110
High IAT: 128
Average IAT: 119

Low ECT: 184
High ECT: 192
Avg. ECT: 188

Reische
Low IAT:98
High IAT:106
Avg IAT: 102

Low ECT: 176
High ECT: 182
Avg ECT: 179


Conclusion:
The Reische thermostat works as advertised. Average drop in ECT of 9* in the HOT So. Nevada weather is impressive. I would recommend this mod to anyone.

Joe

Joe,

Thanks for posting your results. Joel did a great job with this product and I'm glad you're happy with how it performs.

Jared

[Joker45]

Okay Jared,

I just placed my order for one.

Thanks.

[Torch40]

Those are really interesting numbers if you think about it. You would think that the high ECT would even out and eventually be the same regardless of the t-stat. Is the stock t-stat restricted by design?
Looks like a pretty good mod for the money.

I'm assuming ECT = engine coolant temp and IAT = intake air temp.

[03 DSG Snake]

Numbers are very similar to what I was seeing during testing. This thing really works great in the SoCal heat.

[Revan Racing]

mullens, on Sep 10 2009, 01:59 PM, said:

The results are in. I did 5 minute data logs on the NAPA 180 and then the new Reische 170 thermostats. Conditions were similar, approx. 100 deg ambient temp and 7% humidity. I recorded the data in all kinds of driving (freeway, idling, suface streets). Fans were set for 188/198 for the NAPA and 182/188 for the Reische.

NAPA
Low IAT: 110
High IAT: 128
Average IAT: 119

Low ECT: 184
High ECT: 192
Avg. ECT: 188

Reische
Low IAT:98
High IAT:106
Avg IAT: 102

Low ECT: 176
High ECT: 182
Avg ECT: 179


Conclusion:
The Reische thermostat works as advertised. Average drop in ECT of 9* in the HOT So. Nevada weather is impressive. I would recommend this mod to anyone.

Joe

Am I missing something?

How does a Thermostat Reduce IAT1? Ambient Inlet Temperature which is read at the MAF?

Also, why would you change the fan settings which directly affect the ECT due to the heat extraction of the radiator? Why wouldn't you test the same fan speed settings in the data logs with different products? You've got the low speed fan coming on earlier and the high speed fan coming on earlier with the Reische Thermostat. Of course your temperatures are going to be different. Your puller fan is engaging earlier.

How about testing both products on the same day with the same fan speed settings?

Am I missing something?

[Kostas]

dactyl, on Sep 10 2009, 06:12 PM, said:

Am I missing something?

How does a Thermostat Reduce IAT1? Ambient Inlet Temperature which is read at the MAF?

Also, why would you change the fan settings which directly affect the ECT due to the heat extraction of the radiator? Why wouldn't you test the same fan speed settings in the data logs with different products? You've got the low speed fan coming on earlier and the high speed fan coming on earlier with the Reische Thermostat. Of course your temperatures are going to be different. Your puller fan is engaging earlier.

How about testing both products on the same day with the same fan speed settings?

Am I missing something?

Hey i just noticed that (IAT1) I agree about the fan settings. Also 5 minute datalogging runs???

[jcthorne]

Torch40, on Sep 10 2009, 02:15 PM, said:

Those are really interesting numbers if you think about it. You would think that the high ECT would even out and eventually be the same regardless of the t-stat. Is the stock t-stat restricted by design?
Looks like a pretty good mod for the money.

I'm assuming ECT = engine coolant temp and IAT = intake air temp.

This one I can answer, since the new stat properly closes the bypass port in the thermostat housing, it has effectivly increased the capacity of the radiator in addtion to opening sooner.

[Torch40]

jcthorne, on Sep 11 2009, 06:07 AM, said:

This one I can answer, since the new stat properly closes the bypass port in the thermostat housing, it has effectivly increased the capacity of the radiator in addtion to opening sooner.

Thanks

[mullens]

dactyl, on Sep 10 2009, 07:12 PM, said:

Am I missing something?

How does a Thermostat Reduce IAT1? Ambient Inlet Temperature which is read at the MAF?

Also, why would you change the fan settings which directly affect the ECT due to the heat extraction of the radiator? Why wouldn't you test the same fan speed settings in the data logs with different products? You've got the low speed fan coming on earlier and the high speed fan coming on earlier with the Reische Thermostat. Of course your temperatures are going to be different. Your puller fan is engaging earlier.

How about testing both products on the same day with the same fan speed settings?

Am I missing something?

1) I never said IAT1 was affected by the thermostat. I included it for info.

2) I don't see your logic in the fan question. You can't test two different temp thermostats with the same fan settings. 180's will open at about 180-183. If you set the fans at the same temp as the 170 they will run constantly and you still won't go below 180, because the stat will start closing at that temp. Remember rated temp of the thermostat is the the minimum it will run, not the maximum. So, in theory you can set the fans at 160 or 150 and a 180 will still run at 180.

Maybe I'm missing something..

This post has been edited by mullens: 11 September 2009 - 05:50 PM

[mullens]

Kostas, on Sep 10 2009, 07:19 PM, said:

Hey i just noticed that (IAT1) I agree about the fan settings. Also 5 minute datalogging runs???

5 minutes did not include warm up. It was 5 minutes at operating temperature, which was sufficient to gauge thermostat performance. You are welcome to do a 30 minute data log. I will be happy to see the results.

This post has been edited by mullens: 11 September 2009 - 05:57 PM

[Kostas]

mullens, on Sep 11 2009, 06:53 PM, said:

5 minutes did not include warm up. It was 5 minutes at operating temperature, which was sufficient to gauge thermostat performance. You are welcome to do a 30 minute data log. I will be happy to see the results.

Thank you for clarifying that for me. I datalogged before, with Steeda H/E and the 180 stat. If you search "datalooging results" in the forum you will see it. I dont doubt your findings but i cant understand how on 100* weather your ITA1 was low 98* high 106* and avg of 102* witch is only 2* above ambient. I was averaging higher temps than that on cool 74* night! Did you test during the day?? Did you beat on the car at all??

Kostas

[mullens]

Kostas, on Sep 11 2009, 07:49 PM, said:

Thank you for clarifying that for me. I datalogged before, with Steeda H/E and the 180 stat. If you search "datalooging results" in the forum you will see it. I dont doubt your findings but i cant understand how on 100* weather your ITA1 was low 98* high 106* and avg of 102* witch is only 2* above ambient. I was averaging higher temps than that on cool 74* night! Did you test during the day?? Did you beat on the car at all??

Kostas

I can't explain the low IAT's with the 170, but I did the logs at 2PM and it was 100* both times. I only did one short WOT run, mainly because there was so much traffic and I had no room. I didn't do much idling, so maybe that's why the low IAT's. I do know that under hood temps were much cooler with the 170. I didn't get that blast of heat when I opened the hood, especially with the stock thermostat. Either way, I like the results and am very satisfied with the product.

[Bad Horse]

mullens, on Sep 12 2009, 01:19 AM, said:

I can't explain the low IAT's with the 170, but I did the logs at 2PM and it was 100* both times. I only did one short WOT run, mainly because there was so much traffic and I had no room. I didn't do much idling, so maybe that's why the low IAT's. I do know that under hood temps were much cooler with the 170. I didn't get that blast of heat when I opened the hood, especially with the stock thermostat. Either way, I like the results and am very satisfied with the product.

Mullens. IAT1 is inlet temp. IAT2 is air temp after intercooler. Which did you datalog?