darthripley
Moderator
I've had the ARC & now have the ST205 WTA ... honestly there is no comparison between the 2 units.
The ARC is an improvement over the stock A2A TMIC, but if you live in a climate where ambient temps get above 90F then it's just as useless as the stock interheater.
I put in some Water Wetter into the ST205 core & it works like a champ. Of course it gets hot too as it sits right over the motor, but I don't notice the heatsoak as badly as the ARC.
So from my experience, I'd put the ARC/Bay Area under the stock 185 A2A, then the ST185 CS WTA.
This is a good reference thread though for those new to the car & looking for OEM I/C mods.
The ARC is an improvement over the stock A2A TMIC, but if you live in a climate where ambient temps get above 90F then it's just as useless as the stock interheater.
I put in some Water Wetter into the ST205 core & it works like a champ. Of course it gets hot too as it sits right over the motor, but I don't notice the heatsoak as badly as the ARC.
So from my experience, I'd put the ARC/Bay Area under the stock 185 A2A, then the ST185 CS WTA.
This is a good reference thread though for those new to the car & looking for OEM I/C mods.