Mazdaspeed Forums - WI Tank Chiller

If you bought one of our WI kits you get the benefits of our new chiller.

How many of you run pure meth but hate how it gets hot during the summer? How many of you have added ice to WI tank just to keep the temptures cool?

Dropping the tempature of the WI tank fluids have reported gains up to 15 WHP.

This was the idea behind our Tank Chiller.

You can fill it with water and put in the freezer or you can fill it with dry ice and really drop the tempatures of your WI tank. We recommend the dry ice for 80% meth or higher mixtures due to the dry ice freezing the water in the tank. The ice only method works very well for the 80% and lower mix ratios.

Your standard tank contents sit at near ambient temps. So if its 70 degrees outside, you content in the tank are 70 degrees. Problem being is that when the car is in direct sunlight we have seen tank temps soar to over 130 degrees due to the heat that is trapped in the trunk. With ambient at 90 degrees but your WI content at 130 degrees is crazy and not helping your motor much in the way of knock protection. Just imagine how hot the tank content are in some of the southern states .

Test results with ice showed that we could get the temps in the WI tank down 20 degrees below ambient. Dry Ice testing with meth showed a drop of 60 degrees below ambient. Ambient temps during test time were 72 degrees. The first test with water and dry ice ended up with the sleeve frozen inside the WI tank. We had to wait 2 hours before the ice melted away enough for us to remove the sleeve. This is why we recomend that you use dry ice for 80% + meth mixes only. Results were recorded after the tank had sat for 2 hours prior to testing the tempatures. In a moving car the results are going to be a little less due to the cooler fluids being moved around with the warmer fluids vs a bottle just sitting stationary.

Intake manifold temps were effected so much that we couldn't believe the results. All testing was done with an M7 nozzle and ambient temps at 62 degrees. Testing parameters, cruise until we had 80 ish degrees showing on the IAT, WOT 3 times from 60 to 120 MPH, pull over measure surface temp. Same section of road, same stop point everytime.

Testing with no sleeve water only intake surface temps were 114 degrees
with sleeve filled with ice (let car sit for 1 hour) 88 degrees at surface
Tank temp no sleeve 66 degrees
Tank temp with sleeve 50 degrees (sitting for 1 hour)

Testing with no sleeve pure meth only intake surface temps were 110 degrees
with sleeve filled with dry ice (let car sit for 1 hour) 68 degrees at surface
Tank temp with no sleeve 67 degrees (sorry had the heat on in the car)
Tank temp with sleeve 21 degrees

With meth and dry ice we had to change the tune due to the drastic drop in temps and running lean up top. The spray point for the meth is above the IAT so not changes were caused from the IAT getting cooler and sending that info to the PCM.

I did one long WOT pass with the dry ice sleeve installed and then checked the intake runner tempature and it was recording 48 degrees (OMG!) That is 18 degrees below ambient.

Now this is on the Caliber running a plastic intake manifold, so the temps are going to drop quicker in this application than it will with an aluminum manifold. So please take note of the differences between them.

The cooler the spray into the intake the greater the reduction in tempatures. Every 10 degree drop is worth 1% in power gains, in our case that would be; 485 WHP tune on the car running 24 psi with WI. Max temp drop was 62 degrees. 6.2% gain in power, 6.2% of 485 = 30.07 WHP gain and we feel that this is accurate (it was a felt difference running the meth this way).

We will be adding this to the site early this week, so all of you that have bought our WI kit, will get the benefit of the WI Tank Chiller!

Thanks.