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slash128's Top Mount Build

Old 08-31-2015, 05:41 PM
  #1051  
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I had built a dynamic compression timing model in excel a few years back. I posted it on here. I'll have to go and see if I can find it.
Old 08-31-2015, 07:16 PM
  #1052  
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Originally Posted by slash128
Haha yomom was just playin' with you

But I am curious to see your timing. I'll look at my IAT's.

Car is noticeably quicker for me as well when no timing is pulled.

When you dialed yours back did the car respond by not pulling timing?
I figured you were from the emoticons(whatever you call them) I think a lot of people on the forum get butt hurt fairly easy, so that might be why you had to mention that you were just messin. I don't get bent out of shape very easily...
When I dialed it back the car did not respond by not pulling timing. It would still pull timing whenever it felt like it.
I dialed it back because everything I read said on 93 that timing was blasphemy haha. Not long after I switched to a 3gal mix of e85(think knock suppressant) and the car still pulled timing whenever it wanted to I wish I had thought about shimming my knock sensor.

Originally Posted by Harlan

Where do you have your IAT sensor? If it's at the MAF that might be part of the problem. Lets say you hit it hard and heat soak your intercooler then with the IC still hot you hit it again. That hot air is not accounted for in timing and minor detonation could result. The knock sensor does its job and keeps the engine safe, but you see the power loss. If you had the IAT after the IC then it would pull the timing instead. This is a good thing. IAT does not cause detonation when it is accounted for in timing.
If its in the MAF(like mine) it's a drawthru setup so it pulls the temperature of the air before it enters the turbo. going with a bosch IAT sensor at the throttle body is on my list of upgrades unless I decide to go adaptronics... But that hinges on me being able to find a cheap PTP kit like Slash's.

Originally Posted by Harlan
Again the best way to know if it's real or not is to use higher octane or water to prevent knock and see if it goes away.
tried an e85 mix...
Old 08-31-2015, 08:05 PM
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Ok, I'll bite. What was your e-85 mix and did you scale the injectors for it? Also did you try the e-85 mix after experiencing the timing pull with a lower octane mix? It needs to be a solid back to back test to know for sure...

Or craziness here, pull timing from that area of the map and see if the ecu stops pulling it for you... It doesn't require a change in fuel or extra hardware, and should give noticeable results.
Old 08-31-2015, 08:11 PM
  #1054  
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Sooooo... I pulled 2 degrees of timing where I was having KR. I took a few logs today and none had timing pulled. Maybe I must have been on that razor's edge? Seemed to have picked up some power in the 5500-6500 range too, likely from timing not getting pulled Going to work on the fueling now that I tweaked the timing...

So a few answers. My IAT sensor is still with the MAF. I looked at adding a separate IAT sensor post IC, but the '06 ATR doesn't have a calibration table for that sensor. I would have to use a second MAF. I figured the cost and effort to get a second MAF wired and plumbed in post IC just for IAT wasn't worth it, but perhaps this is a good reason...

Yomom, I went back through some my logs to see if there was a difference in IAT between runs and it does appear there is a correlation in my logs...
Attached Files

Last edited by slash128; 08-31-2015 at 08:18 PM.
Old 08-31-2015, 08:26 PM
  #1055  
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Originally Posted by Harlan
Ok, I'll bite. What was your e-85 mix and did you scale the injectors for it? Also did you try the e-85 mix after experiencing the timing pull with a lower octane mix? It needs to be a solid back to back test to know for sure...

Or craziness here, pull timing from that area of the map and see if the ecu stops pulling it for you... It doesn't require a change in fuel or extra hardware, and should give noticeable results.

I didn't scale the injectors for it....I scaled the maf. The mix was tried after experiencing the timing pull on 93 only. I could switch back to my 93oct only when e85 wasn't available. I daily'd my car so this happened often. e85 was used on nights when I was going to local meets for shenanigans


Guess I'll have to do what slash did when my motor is done from seeing his results
Old 08-31-2015, 08:46 PM
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Well hmm... Looks like slash had some mild det... Need more data to be sure. Dunno about you yomom, I still wouldn't write it off as a false positive yet, but it's heading that way. E-85 done right should have removed any trace of det with the same AFR and timing compared to 93.
Old 08-31-2015, 09:08 PM
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For a turbo application a pre-IC IAT is for all intents and purposes, essentially useless ...
Old 08-31-2015, 09:12 PM
  #1058  
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Oh **** he's back
Old 08-31-2015, 09:12 PM
  #1059  
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Looks like you called it Harlan!
Old 08-31-2015, 09:24 PM
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Originally Posted by TeamRX8
For a turbo application a pre-IC IAT is for all intents and purposes, essentially useless ...
Pre-turbo it's potential detrimental. It needs to be between the IC and the throttle.
Old 08-31-2015, 10:56 PM
  #1061  
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Originally Posted by Kane
I had built a dynamic compression timing model in excel a few years back. I posted it on here. I'll have to go and see if I can find it.
Hi Kane, almost missed this. Would be interested in seeing this.
Old 08-31-2015, 11:25 PM
  #1062  
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Originally Posted by TeamRX8
For a turbo application a pre-IC IAT is for all intents and purposes, essentially useless ...
my ideal setup would have one post and pre...both would have to be able to be monitored/logged
Old 08-31-2015, 11:25 PM
  #1063  
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Originally Posted by Harlan
. E-85 done right should have removed any trace of det with the same AFR and timing compared to 93.
my thoughts exactly
Old 08-31-2015, 11:29 PM
  #1064  
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Originally Posted by slash128
Oh **** he's back
Yo' mama must be happy now ...

Originally Posted by Harlan
Pre-turbo it's potential detrimental. It needs to be between the IC and the throttle.
Originally Posted by yomomspimp06
my ideal setup would have one post and pre...both would have to be able to be monitored/logged
Exactly, and nobody that I know of here does either. IC exit should at a minimum be measured. Otherwise you have no f'ing idea wtf the is going on ...
Old 08-31-2015, 11:39 PM
  #1065  
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brett does...there a few boosted guys running the sensor post intercooler


Kane, you know what would take a lot of guess work out of this tuning stuff???? BASELINE! gosh I miss that thing
Old 08-31-2015, 11:50 PM
  #1066  
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Originally Posted by TeamRX8
Yo' mama must be happy now ...
Heck yeah! Your antics crack me up I loved it when you got yourself so worked up you got banned
Old 09-01-2015, 05:07 AM
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Originally Posted by TeamRX8
Exactly, and nobody that I know of here does either. IC exit should at a minimum be measured. Otherwise you have no f'ing idea wtf the is going on ...
I run pre TB, and it's a big reason for why I still have an engine. I'd say post intercooler, but I still haven't figured out what an IC is for.
Old 09-01-2015, 10:56 AM
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Pre TB also for now, This is extremely important IMHO. I have a few more installed just not hooked up and programed.

I've got IAT at the MAF, Ic radiator temp and Post IC. It's been very slow but I'm building an arduino that controls the IC water pump based on differential temps of all three. I've also got Pre IC mainly for testing effeciency and a water cooling system I'm working on.
Old 09-01-2015, 03:20 PM
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Originally Posted by slash128
Heck yeah! Your antics crack me up I loved it when you got yourself so worked up you got banned


As far as getting worked up goes, nobody eats as much crap from other people here as me and I generally don't have any issue with it. In that particular instance, choosing my words poorly had little to with your assertion. It was fairly minor compared to what people have said to me without penalty, or even getting Moderator status shortly after (hi Travis). But moderators are just as susceptible to getting worked up, etc. as anyone else, as well as also being more than fair and forgiving too. Bottom line: It was my stupid mistake. I take full responsibility for it.

Before you laugh too hard though, a friend's daughter was diagnosed with terminal cancer yesterday. It would be wise to remember that karma doesn't really give a sh-t about who you think deserves it or not. If your motor blows up tomorrow you will get my condolences rather than a Nelson-esque "ha-ha". Comparatively speaking, being able to participate on this forum is rather irrelevant in the larger scheme of life.

But then I suppose you don't really care that the comment I was addressing when making my little booboo essentially was saying your Renesis results are impossible to achieve.
Old 09-01-2015, 04:27 PM
  #1070  
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Sorry to hear about your friend. I will say it seems highly insensitive of you to pull them into the forum and use as your defense. Which brings me to the reason I've been on your case lately. You come off very insensitive. You don't give others the same courtesy you are asking for. You don't live up to the same expectations you demand of everyone else. They call that hypocrisy. Maybe the reason you get a bunch of crap from people is because your people skills are lacking. Sure, you don't have to care about others opinions. Likewise no one has to care about yours.

You often have good information but when it's tainted with nastiness people will ignore it. Just my advice to you. Take or leave it. But don't cry when people toss your **** back in your yard.

Last edited by slash128; 09-01-2015 at 04:49 PM.
Old 09-01-2015, 05:15 PM
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found it
https://www.rx8club.com/series-i-do-...-164751/page2/
Old 09-01-2015, 05:27 PM
  #1072  
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Originally Posted by FazdaRX_8
Ya I wish I could do that. The problem for me is that '06 ATR doesn't have a table for IAT sensor calibration So I would have to use a second MAF plumbed in and cables up. Between fab costs, the MAF cost and the cable splitter with connectors to do it right I'm likely looking at $300 or more. Might be a good investment tho.

I'm still not thoroughly convinced that my pulling timing in the tune was the sole reason that KR stopped. After yomom asked about differences in IAT temps I did see a correlation in my logs. Weather has cooled off here lately so it could be I'm not getting timing pulled because it's not so hot. Still adds up to the same result.
Old 09-01-2015, 05:33 PM
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I believe if you use the mazda Vaf IAT like brettus did you don't have to change the IAT calibration
Old 09-01-2015, 05:42 PM
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Originally Posted by slash128
I'm still not thoroughly convinced that my pulling timing in the tune was the sole reason that KR stopped.
No it was probably the sole reason the KR stopped. The most likely reason why it started having knock is the IAT was not accounted for in timing. Move your IAT and then tune it out.
Old 09-01-2015, 05:47 PM
  #1075  
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Originally Posted by FazdaRX_8
I believe if you use the mazda Vaf IAT like brettus did you don't have to change the IAT calibration
Ahh, missed that. I'll have to dig deeper when I get time, thx!

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