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Haltech ECU Technical Information

177K views 781 replies 71 participants last post by  aluna114  
+1 I had these problems and the firmware fixed it.
 
Launch control is more set up by your tuner ..i can snap a few pics of what mine looks like if you want .and as for the flat foot read what i posted before this

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Yeah Curtis, can you post pics of your launch control? Jeff set mine up but I messed with it and I don't remember the original values. LOL
 
Yeah I've been having a couple issues, but Haltech is being really good to me. We think there's just too much heat in the engine bay so I ordered a turbo blanket. We shall see.
 
Well from what we've determined, it pretty much just overheated which led to sudden failure. I'm taking steps to reduce heat in the engine bay. It's been extremely humid here in NJ lately, and between that, road temps in the mid 90s, my black car, stock bumper and stock hood with no vents, temps are pretty ridiculous in the engine bay.

To combat heat I've come up with the following solutions:
-Washer risers under the back of the hood. Yes it looks like dick. Once the turbo blanket comes in, I'll remove a couple washers so it looks flush, as it was actually a little sunken in from the factory.
-I've ordered a turbo blanket for the hot side.
-When I get a little more cash (I'm pretty strapped at the moment) I'll wrap the O2 housing.
-Will cut up my fog housings today for more air flow. (http://www.gencoupe.com/diy-do-yourself/35690-diy-oem-fog-bezels-cai.html)
-I set the engine fan for a lower activation temperature so it's on more of the time.
-I may cut a hole in the wheel well and wire in a computer case fan blowing on the ECU.
 
You know, when mine acted up it was in the rain, too. Adam has assured me that the unit is completely waterproof, but it first died in the rain, and second cut out completely and did not let me connect to it. It was very hot, yes, but also just went through a car wash. :dunno:
 
Well it was like 98F in the sun and the car is just idling there for like 25 minutes getting washed and dried. It's no surprise the temps were retarded.
 
Did the carwash today with no problems. LOL. It was after a 5 minute drive, and I turned the motor off and opened the hood instead of sitting there idling.
 
Update: turbo blanket didn't fit. Gonna order the right one from PTP soon. However, after raising the back of the hood and cutting open the fog bezels, I have not had a repeat of ANY of the idle issues or ECU cut out issue. Not once during that heatwave last week where the ambient temps were 95+F every day, and it did rain some. Looks like a little more ventilation was all she needed.

BTW Treadstone ftw... After a cold start, I cruised for about 30 minutes at 70-80mph and my IAT stayed between 10-15 above ambient. After parking in the sun and running into the bank, the IAT read 55 above ambient, but dropped back down to 20 above ambient in the first couple minutes. It's the first part of my trip today, though, that showed me how effective the added venting is... for most of the time on the highway (out of boost) I saw 86 degrees IAT with 75F outside! Ridiculous! Once the engine bay heat soaked a bit, it was more normal.
 
Well, the car didn't make it into NYC in rush hour traffic without starting its TPS shenanigans. I pulled over and aired out the engine bay for 20 minutes and it was fine the rest of the afternoon/night. So clearly the turbo blanket is necessary. I also have a heat shield for the exhaust manifold that I haven't installed yet, which I'll put on this week.

Honestly, the car is pretty solid... today was kind of the perfect storm of heat generation and it only acted up a little. I drove through stop and go traffic for an hour to get to my girlfriend's, parked the car for 20 minutes and then drove into the city in stop and go traffic much of the way as well, with 85F road temps. So I'm not too worried about the ECU overheating under most circumstances, however I do want to make it bomb proof, so I'll be taking as many steps as I can.

I also have a laptop fan I plan to install near the ECU. What I'm gonna do, I think, is drill some decent sized holes in the wheel well, and use material like the battery wrap Cris posted to create kind of a barrier between the ECU and the motor. If I wrapped the ECU in it, its case would not function as a heat sink, so I won't do that. I know I'll never prevent all the hot air from reaching the ECU with a makeshift barrier, but at least I'll block radiant heat from the engine, and between cowl induction, holes in the bottom of the wheel well and a fan blowing on the ECU, it should stay pretty cool, I think.
 
Curtis, the only reason I can think of that I'm having these issues and you're not is I must just drive a lot more than you. I freelance all over the tristate area and I put around 350 miles on the car in an average week, in all different driving conditions. For this particular issue, my usage of the car is definitely hard on it.
 
Haha, Adam, you guys are a great company and the quality of your product and service speaks for itself. Thanks for staying on the ball with this.
 
How do you know the correct on/off/activation pressure?
 
O dout you drive your car as hard as i drive mine ..but altho its not my dd anymore i do put few hundred on the car in about 4 days

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LOL you might be surprised how hard I drive this ****er. The point is not that I'm driving it hard, though, but that the type of daily driving is particularly hard on it in terms of heat soak. Cruising for an hour and then sitting in stop-and-go traffic for an hour, etc. That kind of thing builds up heat in the engine bay very quickly, which is what's happening here.

I actually have never had a problem when I'm going for a "spirited" drive, where I'm likely to be between 0% and WOT for 20 minutes at a time through some twisties. I only get the heat soak issues during regular, daily driving, New York City style traffic.
 
Curtis, it's not how far you're going or how fast, it's the fact that I'm going for a long enough time to warm up the motor real good and then pretty much just sitting still with an occasional load on the motor but no airflow that's causing the temps to spike. The stop and go traffic does it. My car will cruise all day long with no problem at all! It's only sitting in rush hour that's making it overheat.
 
That sounds like the idle surge I'm getting when it gets too hot. Does it stop surging if you tap the throttle?
 
Yeah, more thanks for El Dominio. I updated to your AC settings since with all the rain/humidity I need to defrost today. The car is not pushing/pulling all the time (hitting the max and min pressures you mentioned before) which was hugely annoying. Thanks!
 
You need to import the EVAP settings from the BKtheta basemap that Haltech has on their website.