Aem v2... So maybe it's set up differently than on an oem ecu

 

That temp sensor readout has been changed by the AEM. Normal AP1 goes to 4 at 232, that is similar to my Modifry and I see 4 bars if I let the car sit for a minute or two, it doesn't worry me a bit. I don't see 4 if I am moving, yet (it isn't really hot here and I have not tracked it). If I did I would take note, but not be too concerned as long as it came back down.

 

Didn't know it could do that, pretty cool!

 

I have ian's radiator with big setrab oil cooler on my na s2000. On buttonwillow on relatively warm day, my water temp topped at 195f and oil temp was at 230f.

 

Maybe I am wrong, maybe it can't, but his readings don't coincide at all with what an AP1 gauge should. I know the Modifry upgrade has a AEM user specific, so it must do something, but the fact that it has an AEM specific says I could be wrong.

 

in any case, if the car wasnt overheating before but suddenly is, there is a leak somewhere and air got into the system.

do the billman bleed and see if that helps. i know i had a similar situation where i suddenly hit 4 bars on my ap1 temp gauge after a track day. i managed to melt some of the IM gasket by the water neck and had introduced air into the system. shit happens

another thing you can do is get a pressure tester kit. that helped me locate my leak. just do it in a quiet area and you'll hear the hiss once you pressurizer the system

 

Mishimoto radiators are total junk sorry. I couldn't track my car with it. Maybe on the street it was fine but on track forget it!

Switched to a dual core (Ian's or I'd suggest C&R either or) and BAM, 175 avg temp on track lap after lap!

 

I've been running a Mishimoto dual core since 2009. Been boosted since 2011. Upped the boost earlier this year, had a hard track day in 85 degree weather on 10.5lbs of boost. The hottest the car became was 220 (this was already after 3 20+ minute sessions) then cooled down below 200 on the straights.

6 years, 4 track days, countless canyon runs and 50k+ miles later my Mishimoto is still going strong.

 

Sorry that's not great data... I'd be terrified if my temps were that high. In 40min sprint races and over 100's of 25min hpde sessions I've never seen coolant over 185.

 

I made a thread about this a week or so ago and got answers that some guys are tracking on EBay/Megan/Mishimoto with zero issues. I guess we will see how it works for me, I hit the track next weekend.