Ok I got a little lost in my shit talking lol

Is it or is it not normal for IAT's to climb during hwy pulls? Some say it is, some say it isn't. Logic dictates to me that for my setup with the turbo where it is and the ambient temps being what they are down here, there's no way for it not to.

Also I need to clarify - I'm not talking stop light to stop light pulls or even light pulls in 4th or 5th. I'm talking EXTENDED time above 115mph...like 2-3 mins playing around with a top speed of 160mph. During normal driving and just abbreviated pulls through the gears to redline around town, the IAT's stay in concert with what's going on under the hood...that is they might rise from 98* to 115* until I slow back down to cruising.

Also just FYI, stock gears will do 170+. I just don't have the balls (or the room) to go that fast. I didn't realize I was doing 160 the one time I went that fast. Its scary how fast this car will get up to speed now without you realizing it.

 

Bummer about the injection feelings you have, from my standpoint id say run the medium tip, run just water to cool the combustion temp with no retuning needed and if for some reason something goes wrong and it doesn’t work like you say then your no worse off then you currently are lol Just food for thought, but I can understand if your not that hands on with your car it is one more thing to have to think about.

 

I am that hands on with my car, which is why I don't want to mess with it. I like to keep things simple.

 

Is it a 3" or 4" turbo inlet? if its a 3" you can easily get the filter down in the fender well. The IATs will play a bigger roll than the extended intake (if you don't have to drop down a size and use mandrel bends). If you didn't have a filter on the end what Mase said would definitely be true but in your case 90& of the pressure drop is going to come from the filter regardless. If your melting your filter you probably don't want it there anyway.

 

All things consider, even if you were not turbo'd, you're on the hwy in sixth gear vtecing for a long duration of time keeping your average speed above 115mph. Your IAT is going to be pretty damn hot, now add FI to the equation, I'd say, yeah.. its normal to be that hot.

You also mentioned that you are running the Hondata IMG, which means that the heat in your Intake mani isn't going to be transferring to your engine block as much as it normally would have, therefore without the larger 'heat sink' effect, you're going to run hotter at the manifold as well.

Even though my car isn't turbo, but since I upped the boost in my SC setup, Ive encounter some heat soak issues as well. I already have a vented hood, but now I'm looking at a combination of new front bumper as well as larger heat exchanger setup as a project for next year. There's only so many things you could do to cool things down. And all already been tested and done on this forum with varying degree of success.

 

Whats not correct? I never said it was uncommon to see 140* IAT's, but it is uncommon for the IAT's to skyrocket during a highway pull. Maybe if he wasn't running an intercooler. The faster you are going during a pull, the more heat that should be getting removed from the intercooler, given everything is efficient, like I stated before.

My car never skyrockets the IAT during a pull, and I've done lots of pulls to those speeds, regardless of ambient temp and I run the same IAT sensor, in the same exact location. It never did on straight pump gas, race gas, or now. Something is definitely not working to it's efficiency if that is happening and it's not right. Troubleshooting something over the internet is pretty pointless, but I don't see what I said that was wrong. A intercooler or turbo that was improperly sized for the power could definitely cause this issue. I also understand it could be something else as well, just speaking from my experiences.

 

Are you sure its reading true temps? Have you done the AEM re-cal of the IAT sensor to get the temps correct? I dont see why a hard drive like that wouldn't see at least 30-40 degree rise in IAT's, it sounds normal to me. Driving very hard in higher gears at high speeds for long periods of time on a turbo setup is very hard on the engine and will generate a lot more combustion heat than say, a drag strip run. The load, when being in higher gears for a long time, is so much greater than shifting through all the gears quickly and shutting it down at XXX mph. Especially if its not tuned to run that way. Most tunes are set up for fast, relatively brief accelleration, not extended high speed runs. Be careful if your setup and tune isn't set up for this kind of driving. I believe you want to run quit a bit richer at the top and more conservative timing if you're doing a lot of this kind of driving. I'm no expert but this is how I took the explanation my tuner gave me a while back on this.

 

Some of us can get up to 160 a lot faster than others too.

All of my highways pulls to this number are done in about 6-7 seconds according to the data logs. That's not necessarily a long pull. Very comparable to a dyno in terms of time.

Chadd, you car comes to mind on the whole IAT issues. Remember when you maxed out your intercooler on the dyno? It made tons of heat, before that, it would drop throughout the pull.

I've also noticed throughout the year, as I've started to push my car more, the IAT's are starting to level off. I'm not seeing the decreases that I did earlier in the year when I wasn't making as much power.

I'm not saying this is definitely the issue, just shedding some light on the topic at hand.

 

Kpro...

 

Yeah, I do remember that. I think D got to like 420 whp or so and the IAT's were gradually climbing so he backed it back down to around 375 whp until I got my 750 hp one. At that time my intercooler was only rated at around 450 hp. It sucked because I had to come back up there for another tune. Lol