Why are my Manifold Air Temps OUT OF THIS WORLD!?
- Thread starter CajunKenny
- Start date
CajunKenny;1428246 said:IJ: What was your baseline temp before the pull? I'm wondering what your increase was.
GrimJack: This is all street tuning. I don't have my Dyno up and running yet.
30c/86f cold>74c/165f hot before the ramp
nosechunks;1428288 said:
Yeah, I agree and see what you're saying. What's really throwing me for a loop is looking at other logs and only seeing a fraction of the temp increase that I'm seeing.
sk6471;1428339 said:
It'll be hotter. Instead of roasting a chicken, I'd be able to roast a cow!
IJ.;1428342 said:
Thanks IJ. That actually helps because that similar to what I'm seeing.
Anytime you compress AIR it get's hot CK, that's the IC's only job and depending on how big/efficient it is will determine what you see at it's outlet.
This is why I often mention how good a W2A is in a daily driver that see's stop start boost, they just stomp all over an A2A being an active system and not relying on the car going forward to cool.
A2A's just heat soak their brains out in traffic then your Temp compensations kick in and effect the tune and the car's behaviour, early on I found AIT sensor placement important, I had mine in the manifold where at idle it would get minimal airflow and heatsoak badly.
I now run both sensors in the pipes outside the bay on either side of the IC then write my compensations based on their output.
This is why I often mention how good a W2A is in a daily driver that see's stop start boost, they just stomp all over an A2A being an active system and not relying on the car going forward to cool.
A2A's just heat soak their brains out in traffic then your Temp compensations kick in and effect the tune and the car's behaviour, early on I found AIT sensor placement important, I had mine in the manifold where at idle it would get minimal airflow and heatsoak badly.
I now run both sensors in the pipes outside the bay on either side of the IC then write my compensations based on their output.
Yup, had the same problems here, when I had the sensor mounted just before the throttle plate, on top of the engine.IJ.;1428628 said:
The problem with heat soak like this is that it calculates the air going in using a temperature that's too hot... and this leads to more air in the engine than your computer thinks there is, or a lean condition.
I'd rather have a setup that, when it malfunctions, measures too much air, and therefore makes for an overly rich situation.
So then is the common thinking that I do have a problem? Or is it just one of those issues that isn't necessarily a problem; but, could be improved upon?
I understand what grim is saying about heatsoak causing a lean condition. This is obviously something to avoid. That is why I mounted my AIT where it is.
There is another location that I might be able to utilize. It would be just under the headlight which isn't far from it's current location; but, would be completely out of the engine bay.
Here's another approach that comes to mind. I'm going to use water/meth here in the near future. I had planned on having it start injecting at ~15 psi on up. Would that negate the need for relocating the sensor and/or converting to a W2A setup?
Would a W2A setup be compatible with Water/Meth?
Sorry for all the questions...
I understand what grim is saying about heatsoak causing a lean condition. This is obviously something to avoid. That is why I mounted my AIT where it is.
There is another location that I might be able to utilize. It would be just under the headlight which isn't far from it's current location; but, would be completely out of the engine bay.
Here's another approach that comes to mind. I'm going to use water/meth here in the near future. I had planned on having it start injecting at ~15 psi on up. Would that negate the need for relocating the sensor and/or converting to a W2A setup?
Would a W2A setup be compatible with Water/Meth?
Sorry for all the questions...
You could stick the sensor right behind the air filter. Runs a bit richer (well, before tuning) but creates the safety net grimjack speaks off.
try putting the stocker (IC) back on and see if you get a better drop in temps through the IC. Other wise you might try re mounting the AIT sensor under the headlight right after the IC outlet.
id consider the stock IC to test it, maybe the replica's really dont cut it?
try putting the stocker (IC) back on and see if you get a better drop in temps through the IC. Other wise you might try re mounting the AIT sensor under the headlight right after the IC outlet.
id consider the stock IC to test it, maybe the replica's really dont cut it?
No problems, just normal operating conditions. If you want it cooler go for a bigger IC or a bigger turbo.
grimreaper;1428823 said:
Could be.
I suppose I could just install the SP61 and see what happens.
What are you seeing for a temp increase?
To be honest, I don't think I'd worry about it. Your temps are still very reasonable. I run a very similar setup on my car - temp sensor in the same place, air filter in the same place.
If I were going to change anything, it would be to build a box around the air filter, so it has to suck in cold air from the headlight area instead of hot air from the engine bay. Actually, I'm working on getting that very thing...
If I were going to change anything, it would be to build a box around the air filter, so it has to suck in cold air from the headlight area instead of hot air from the engine bay. Actually, I'm working on getting that very thing...
SacoMan;1429275 said:Wonder how many here know you are refering to a Celica 2.0 Turbo 4wd
I wonder how many people here actually understood that.......sentence(?).
Fwiw I had my car out today roughly ~50f ambient. IAT in inlet to turbo and was seeing 90f temps while driving. No temp sensor after IC so who knows but that's intake underhood temps.
I'm in agreement with the others here that you're worrying more about this than necessary. The location of your IAT is the same as most of us run without problems. I also agree you need to get the air filter out of the engine bay or box it.
If you do want to move the sensor out of the bay altogether you can adjust for it with the temp correction table in the Pro. I do not recommend placing it before the IC or turbo though.
If you do want to move the sensor out of the bay altogether you can adjust for it with the temp correction table in the Pro. I do not recommend placing it before the IC or turbo though.
Thanks everyone! You've all been very helpful.
I'll continue with the tune and keep a close eye on my EGT's!!
I'll continue with the tune and keep a close eye on my EGT's!!
CajunKenny;1430366 said:I'll continue with the tune and keep a close eye on my EGT's!!
GREAT! Thanks for reminding me i have to pull my exhaust housing to tap it for EGT probe. :runaway:::hang::